Lotus 2004 Eleven, 2004 Elise, 2004 Exige Service Notes

SERVICE

NOTES

2004 Model Year Onwards

with 1ZZ/2ZZ/1ZR Engine

Lotus Cars Ltd. Hethel, Norwich, Norfolk, NR14 8EZ, England.

Tel: +44 (0)1953 608000 Fax: +44 (0)1953 608300 www.GroupLotus.co.uk

Page 1

Lotus Service Notes Introduction

CONTENTS

ELISE & EXIGE; 2004 M.Y. ONWARDS; WITH 1ZZ/2ZZ/1ZR ENGINE

Section Technical Data - Engine TDP

- Vehicle TDQ

Chassis AH

Bodycare & Repair BQ

Body Fittings BR

Front Suspension CI

Rear Suspension DH

Engine & Engine Management - Lotus supplement EH

- Toyota 1ZZ/2ZZ repair manual * * see separate manual E120T0327J

- Toyota 1ZR repair manual ** ** see separate CD T000T1523F Engine Management EMP

Transmission - Lotus supplement FJ

- Toyota C64/C56 repair manual # # see separate manual E120T0327J

- Toyota EC60 repair manual ## ## see separate CD T000T1523F

Wheels & Tyres GH

Steering HG

Brakes JJ

Engine Cooling KH

Fuel System - Except North America LJ

- North America LK

Electrics MP

Maintenance & Lubrication OI

Air Conditioning, Heating & Ventilation PL

Clutch QH

Supplementary Restraint System - SRS (Airbags) WD

Supplement - Exige Supercharged (S/C) Exige S/C

Supplement - 2-Eleven 2-Eleven

Page 2

Lotus Service Notes Introduction

VEHICLE IDENTIFICATION NUMBER & ENGINE NUMBER

The Vehicle Identification Number (V.I.N.) is stamped on the chassis in the right hand front wheelarch area, viewable with the front wheels turned to right full lock, and is also printed on a label stuck to the inside of the chassis sideframe alongside the driver's seat. 1ZZ and 2ZZ engine numbers are marked on a vertical patch at the right hand side of the rear face of the cylinder block, adjacent to the clutch housing.

On the 1ZR engine, the number is stamped on the left hand front of the cylinder block, alongside the alternator, and is prefaced by ‘1ZR’.

Both V.I.N. and engine numbers should always be quoted with any vehicle enquiries, as Factory records are filed against V.I.N., and specification change points are identified by V.I.N. or engine number. The vehicle licence plate should be disregarded in this context as it may not accurately reflect vehicle age, and may also be changed during the car’s life.

The V.I.N. comprises 17 characters, coded in accordance with European Economic Community (EEC) and National Highway Traffic Safety Association (NHTSA) directives. For change point identification in Service Notes, Service Bulletins and Service Parts Lists, typically, only characters 10 (model year), and 14 to 17 (serial number) will be quoted.

V.I.N. ON CHASSIS

ohs119a

V.I.N. LABEL

ohs104 1ZZ/2ZZ ENGINE NUMBER ohs133

:2

5

1ZR ENGINE NUMBER

ohs176

Page 3

Lotus Service Notes Introduction

2010 M.Y. serial no. 0360 onwards

S C C L H 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Manufacturer Code

Brand

L = Lotus

Model HC = Elise

HH = Exige NB = 2-Eleven

Engine

A = 2ZZ s/c 260 c/c B = 2ZZ s/c 260 c/c no evap C = 2ZZ 190 no evap L = Motorsport

P = 2ZZ 190 evap V = 2ZZ s/c 220 c/c

W = 2ZZ s/c 240 c/c X = 1ZR 135 Y = 1ZZ 140 Z = 2ZZ s/c 220

Restraint A = 3pt no SIR

C = Dual SIR L = 4pt no SIR S = 5pt no SIR

Check Digit

Model Year

A = 2010 B = 2011 C = 2012 D = 2013 E = 2014 F = 2015

Plant H = Hethel

Market Spec.

A = LHD USA G = LHD SVA B = LHD Canada H = LHD Track C = RHD Other J = RHD Track D = LHD Other L = South Korea E = Gulf States F = RHD SVA

Build Type 1 = Std.

2 = Proto.

Serial Number

2004 M.Y. - 2010 M.Y. serial no. 0359 Assembly Plant Model Vehicle Type H = Hethel 2 = 2-Eleven Manufacturer 111 = Elise/Exige Check B = Shah 3 = Elise Identifier Code 123 = 2-Eleven Digit Alam 8 = Exige

S C C

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Engine Type Restraint Model Year Chassis/Body Serial A = 2ZZ s/c 260 c/c A = Active belts 4 = 2004 A = LHD Fed. Number C = 2ZZ 190 no evap C = Dual S.I.R. 5 = 2005 C = RHD L = Motorsport + active belts 6 = 2006 D = LHD N = 2ZZ s/c 255 7 = 2007 F = U.K. SVA RHD P = 2ZZ 190 evap 8 = 2008 G = U.K. SVA LHD V = 2ZZ s/c 220 c/c 9 = 2009 H = M/sport LHD* * Track only. Not W = 2ZZ s/c 240 c/c A = 2010 J = M/sport RHD* approved for road use Y = 1ZZ 140 L = LHD Fed. a.c. Z = 2ZZ s/c 220 M = LHD Can. a.c. N = RHD a.c. P = LHD a.c.

Page 4

Lotus Service Notes Introduction

MODEL HISTORY MILESTONES (does not include all special editions)

Elise 111R Introduction: January 2004

VIN character 4 = P; Character 13 = 3; Serial number from 0970

Note that the serial number sequence is shared with other Elise variants.

Changes from previous model include: Toyota powertrain with 1.8 litre VVTL-i engine and 6-speed transmission. Twin exhaust tailpipes exiting through centre of diffuser. Larger fuel tank with new pump. Revised chassis rail rear ends, new rear subframe, revised seat belt mounting frame backstays. Revised rear suspension wishbones, springs and dampers. ABS brake control with vacuum servo. Revised front bonnet grilles and access covers.

2004 Exige Introduction: March 2004

VIN character 4 = P; Character 13 = 8; Serial number from 1092

Note that the serial number sequence is shared with other Elise variants.

Differences compared with Elise 111R include: Restyled front and rear clamshells with roof scoop, new tailgate panel and strut mounted rear aerofoil. Front body splitter panel. Re-styled road wheels, wider on the front, and Yokohama A048 tyres.

2005 M.Y. Elise for North America: May 2004

VIN character 10 = 5; Character 12 = L; Serial number from 0001

Note that the serial number sequence is shared with other Elise variants when '05 M.Y. is adopted for those models later in the year.

Differences compared with Elise 111R include: Driver and passenger airbags, pyrotechnic seat belt pretensioners; Re-styled fascia and dashboard structure; Front speakers moved onto top surface of fascia, stowage pockets incorporated into dashboard end panels, fixed windscreen demist vents. Engine start button in driver's side switch panel. Revised springs and dampers, Yokohama AD07 tyres. Side marker lamps on front and rear wheelarch lips. Revised fuel system with fuel filler flap.

Lotus Sport Exige 240R: March 2005

Limited edition of 50 units produced as post registration official factory conversions of '05 Exige by the Lotus Sport workshops at Hethel, for U.K. and certain overseas territories. The car is not identifiable from the VIN coding.

Differences compared to standard Exige include: 243 bhp engine upgrade using Eaton M62 supercharger with integral by-pass valve, air/air chargecooler and 5th fuel injector. Re-programmed ECU. Accusump. Stiffened springs & Ohlins adjustable dampers. Adjustable front anti-roll bar. Chassis rear brace kit. Forged 5-spoke widened roadwheels & Yokohama A048 tyres. Motorsport brake pads, braided hoses, yellow callipers, Castrol SRF brake fluid. Sport Yellow body colour with black wheels, or Sport Black body with silver wheels. Black interior with yellow inserts. 4-point harnesses, T45 roof hoop and backstays.

2006 M.Y. Introduction: September 2005

VIN character 10 = 6; Serial number restarts at 0001, common to all variants.

Introduction of USA Exige and Canadian Elise.

5-speed Elise remains unchanged.

Differences between 6-speed '06 Elise and '05 include; Electronic throttle control (using no mechanical cable). Optional Lotus Traction Control (LTC) or Limited Slip Differential (LSD) with LTC. Standard fit Yokohama AD07 tyres on non-USA cars. Optional forged wheels with new 6.0 in front size. LED rear lamp clusters incorporating reflectors (formerly separate), and commonised USA type CHMSL. ProBax seat foams. New body colours. USA & Canadian Elise; revised fuel tank and evap. loss system. Canadian Elise uses daytime running lights and clutch down start allow switch. USA Exige similar to non-USA, but with USA airbag interior.

Sports Racer: October 2005

Special paint versions of '06 M.Y. 111R in either Ardent Red with triple Monaco White stripes, or Nightfall Blue with twin Monaco White stripes. Combined total of 199 units with unique build plate on sill. Forged wheels (6J on front), AD07 tyres, sport suspension, twin front oil coolers, LTC. Black leather interior with red or blue stitching, and red or blue 'Elise' embroidered into head restraints. Sports Racer decals.

Page 5

Lotus Service Notes Introduction

Exige Cup 190 & 240: January 2006

Limited number of competition oriented naturally aspirated (190) or supercharged (240) models produced as post registration official factory conversions of '06 Exige by the Lotus Sport workshops at Hethel for U.K. and certain overseas territories. Not identifiable from VIN coding.

Differences compared to 240R (see above) include: Electronic throttle, high flow port injectors (no 5th). Cup 240 fitted with torque sensing LSD with LTC. Cup 190 uses friction plate LSD. Standard Exige wheels in 'Hi-power' silver. Race cars fitted with FIA 6-point roll cage, remote kill switch, extinguisher system. Standard body colours.

Exige S: February 2006

VIN character 4 = V

Factory built type approved supercharged Exige. Not USA.

Differences to standard Exige include: 221 PS supercharged engine similar to 240R but using electronic throttle, smooth flow inlet adaptor, standard injectors without 5th injector, modified downpipe, optimised muffler with single oval tailpipe. Enlarged roof duct inlet for chargecooler. Body colour splitter, scoops and aerofoil. 'Exige S' decal on rear transom, 'S' on front quarter panels.

USA Lotus Sport Elise: March 2006

Limited edition of 50. Saffron Yellow with twin Storm Titanium stripes. Saffron Yellow centre console. Yellow highlighted sports seats, 'carbon' door trim inserts. Harness bar, T45 seat belt mounting frame. Motorsport mats, stalks, winders and parking brake sleeve. Traction control, supersport suspension, black forged wheels, Yokohama A048s, braided brake hoses, silicone fluid, motorsport clutch. Lotus Sport decals and Union flags. Lotus Sport chassis plate.

2007 M.Y. & Elise S Introduction: June 2006

VIN character 10 = 7; Serial number restarts at 0001, common to all variants.

VIN character 4 identifies engine type. Elise S = Y

Differences between '07 Elise/Exige and '06 include: Elise 111R renamed Elise R; New sealed headlamp units; raised LOTUS lettering on rear transom; additional screen pillar seal; Alpine audio; improved HVAC ducting. New model Elise S uses 1ZZ-FE engine producing 100 kW, with variable inlet timing but fixed valve lift, plastic inlet manifold, revised intake snorkel, revised exhaust manifold and downpipe, smaller tailpipes within standard trims. Elise S also uses new C56 5-speed transmission and 6-spoke roadwheels sharing styling of standard '01 model wheels.

USA Exige S: October 2006

The specification of the USA Exige S is that of the standard USA Exige and option packs, apart from the engine, which is as non-USA Exige S with the following exceptions: High flow port injectors, specific engine programming, 223 PS, 223 Nm. Carry-over features from the non-USA Exige S include exhaust downpipe and optimised muffler with single oval tailpipe, roof air intake funnel mouth.

Exige S British GT Special Edition: November 2006

Celebrating Lotus Sport Cadena’s 2006 British GT3 Team Championship victory.

Differences to standard Exige S include: Torsen LSD & Lotus Traction Control. Chassis rear brace kit. T45 roof hoop & stays. Braided brake hoses. Level 1 sports exhaust. Forged 7-bifurcated spoke silver wheels. Lotus Sport black metallic body colour with Sport yellow & Arctic silver quad stripes, supplier decals on sills, Lotus Sport visor strip, Cadena decals on front wings, GT3 decal on rear clam, GT3 winners decal with unique build number on rear quarter panel, Lotus Sport build plate with build number. 4-point harnesses, black/yellow door trims and unique black/yellow trimmed seats. Optional a.c. Optional GT pack available as post registration official factory conversion by Lotus Sport workshops at Hethel for U.K. and certain overseas territories, includes: High flow injectors, different ECU & unique calibration for 243 bhp, Accusump, 2-way adjustable Ohlins dampers with uprated springs, 308mm front discs & 4-piston A.P. callipers, Pagid pads, Castrol SRF brake fluid.

Page 6

Lotus Service Notes Introduction

USA Low Speed Damage Mitigation: January 2007

From ‘07 USA VIN serial no. 1579.

To meet USA safety legislation, modifications made to Elise/Exige: Front; armatures and foam inserts added between crash structure and clamshell. Rear; bumper panel housing foam pads either side of licence plate, narrower rear grilles, reinforced boot floor and diffuser support panel, stiffened diffuser. Some elements commonised for all markets.

Lotus Sport Exige Cup 255: January 2007

Produced as post registration official factory conversions of '07 Exige S by the Lotus Sport workshops at Hethel for certain territories, excluding U.K. and USA. Not identifiable from VIN coding.

Based on Exige Cup 240 (see above) with following differences: Power increase to 255 PS by; unique ECU calibration, enlarged chargecooler, extended roof duct, larger air cleaner and intake spout, uprated fuel pump. A.P. Racing 4 piston alloy front callipers, 308mm front discs.

2-Eleven Introduction: May 2007

VIN character 6/7/8 = 123; Character 13 = 2

Extreme, minimalist, track focussed Elise variant based on Exige Cup 255 powertrain componentry, but using new chargecooler arrangement. Produced in small numbers for U.K. and certain overseas territories. In U.K. only, SVA road going version available. All other territories only for track use, in LHD or RHD.

New body with no doors or roof. Aeroscreen. Rear aerofoil in two versions. FIA compliant roll over bar. Chassis rear brace, unique front top wishbones and steering arms, optional Ohlins suspension. Accusump, twin front oil coolers. Standard LTC, optional variable LTC & Launch Control. Uprated clutch. Odyssey battery. Limited warranty for SVA cars. Extensive options list.

USA Elise Limited Edition 'Type 72D'

Limited edition of 50 cars to commemorate the 35th anniversary of Lotus' F1 1972 World Championship victory with the type 72D.

Phantom black body colour with hand painted gold pinstriping. Rear body spoiler, black diffuser. Gold laurel leaf decal on front quarters, gold 'Elise' and 'Type 72D' decals, gold raised LOTUS lettering, gold/black nosebadge, gold fuel filler cap. Gold Exige 8 split-spoke wheels with Yokohama A048 tyres and sports suspension. Black & gold seats and interior trim details with Limited Edition plaque. Scale model crash helmet.

Club Racer: September 2007

Limited edition of 25 for U.K. Unlimited for Europe.

For U.K., spec. based on '07 Exige S with Sport, Touring & Super Touring packs and a.c.. Sports exhaust supplied for dealer fitment.

For Europe, spec. based on '08 Exige S (see below) with Sport and Performance packs. Forged wheels.

All cars: Hethel track decal on rear transom, Le Mans blue body with Phantom black triple stripe. Black leather and carbon effect trim with colour coded stitching.

Introduction of 2008 Model Year Elise/Exige: October 2007

VIN character 10 = 8. VIN serial number restarts at 0001. Exige N.A. built only to special order.

All cars now with dual airbags and start button in matt charcoal finish fascia. PFK 457 security system with Lotus design transmitter key. Tyre pressure monitoring for USA only. High rpm sequential tell tales. CAN bus diagnostics using laptop Lotus Techcentre. New paint colours. Performance Pack option (VIN character 4 = W) with 240 hp calibration, high flow injectors, big roof scoop, uprated clutch, 4-piston front brake callipers and enlarged front discs, variable traction and launch control (excludes warranty).

Elise S Hethel 40th Limited Edition: October 2007

Commemorating 40 years of production at Hethel. All LHD.

'08 M.Y. Elise S in Burnt Orange with hardtop. Orange body grilles and centre console. Black diffuser and wheels. Black leather seats and door trim with orange stitching. Build plaque. Country decals below side repeater lamps. 7 Union Flag, 6 Swiss, 2 Belgium, 4 French, 10 German, 6 Italian.

Page 7

Lotus Service Notes Introduction

Elise 'California' Limited Edition: October 2007

USA only. 25 off Ardent Red with cream/red leather and champagne trim; 25 off Saffron Yellow with black leather and champagne trim.

Based on USA Elise with touring pack. Rear body spoiler. Silver front intake grilles, other grilles in body colour. 16-spoke cast wheels in Hi-power silver, AD07 tyres. Lotus roundel and California decals on front wings. Sports seats in cream & red or black leather. Other trim in cream & red or black leather. Hardtop lining in Beige cloth. RHD footwell divider.

Exige Sprint: November 2007

Limited edition of 40 cars for U.K. market, one for each year from 1967 to 2006. +20 E.U. +2 Japan.

'08 M.Y. Exige S with Sport, Touring and Performance Pack, a.c., black forged wheels, 2-tone paint in Aspen White and either Persian Blue or Saffron Yellow, with gold decal strip and 'Exige Sprint' logo. Union flag on rear body, laurel decal on LHR quarter, colour coded leather seats and trim, embroidered footwell carpet mats. Build plaque on chassis sill.

Introduction of Elise SC: February 2008 (nal '07 M.Y. serial no. 3579)

Supercharged Elise without chargecooler.

VIN character 4 = Z

Based on Elise R, but using new Eaton M45 supercharger rotor pack integrated into inlet manifold, high flow fuel injectors and unique calibration to produce 220 PS. Rear body spoiler, Lotus styled 12-spoke road wheels in 6.0 and 8.0 front/rear widths, standard AD07 tyres. Wheelarch lips on non-USA cars. 'Elise Supercharged' decals on rear transom and front wings.

Lotus Sport Exige Cup 260: February 2008

Fully Type Approved version of Exige Cup 255 (see above).

VIN character 4 = A

Based on Exige S with: Big roof scoop, high output fuel pump, unique calibration to produce 260 PS. Accusump, lightweight flywheel, uprated clutch, Torsen LSD, Variable Traction and Launch control (excludes warranty). 4-piston front brake callipers and enlarged front discs, braided hoses, Bilstein or Ohlins adjustable spring/dampers, stiff adjustable ARB in hard mounts, hi-power silver 16-spoke cast wheels, A048 tyres. FIA compliant battery isolator and plumbed-in fire extinguisher. T45 seat belt anchorage frame. FIA compliant cage and 4-point harnesses supplied separately. NO airbags and none pre-tensioner 3-point belts. No CDL. Black Alcantara/carbon effect seats and door trim. Build plaque on dash, 'Lotus Sport' decal on front quarter panels, 'Cup 260' decal on rear transom, black diffuser. Restricted warranty.

USA Elise SC '60th Anniversary': May 2008

Limited edition of 60 USA cars to commemorate 60th anniversary of Lotus Cars.

Based on Elise SC with hard and soft tops, Touring and Sport Packs, supersport suspension, forged wheels, A048 tyres, T45 seat belt frame & harness bar. Body and double stripe paint in BRG/Saffron, Saffron/ Black, Black/Arctic, Storm Titanium/Canyon Red. Complimentary trim inserts and 60th Anniversary embroidery. Anniversary decal on rear transom.

Clark Type 25 Elise SC: June 2008

Limited edition of 25 U.K./25 E.U./25 USA cars to commemorate 40th anniversary of Jim Clark's death. Donation to the Jim Clark memorial fund.

Based on Elise SC with hard top and Sport Pack. BRG (B04) with Saffron single centre stripe, Lotus Sport wheels with black spokes and silver rims, A048 tyres. Black & red leather themed interior, with sports seats, wood gearknob and build plaque. Type 25 decal on rear transom, Jim Clark signature on LH buttress and inner door panels, race roundels on doors with Type 25 decals. USA cars used 7-splitspoke black forged wheels, alloy gear knob, black diffuser.

2009 M.Y. Introduction: September 2008 (nal '08 cars: Elise 2308; Exige 2304; 2-Eleven 2292)

VIN character 10 = 9. VIN serial number restarts at 0001.

No changes apart from Cup 260.

Page 8

Lotus Service Notes Introduction

2009 M.Y. Lotus Sport Exige Cup 260: October 2008

Lightweight body panels using carbon fibre, rear window deleted from rear bulkhead. Lightweight components incl. battery, c/c U-bends, billet flywheel, new forged 12-spoke roadwheels in 7 & 8 inch widths, rear subframe with DeltaProtekt coating, deletion of footwell pads, interior mirror, sunvisors, tailgate strut. HANS approved seats. Body coloured SBAF 'A' frame. Chassis drilled for front cage. New body graphics.

2010 M.Y. Introduction: May 2009 (nal '09 cars: Elise TBA; Exige; TBA; 2-Eleven TBA; USA TBA)

VIN character 10 = A. VIN serial number restarts at 0001.

Elise range unchanged. Exige S (on USA & Gulf only from 0360): Front clamshell with restyled lower section including larger air intake ducts with a horizontal vane in each oil cooler duct. New full width body colour front splitter. Wider, body mounted rear aerofoil, supported by end plates. All models: reduced emissions and improved economy figures.

2010 M.Y. Lotus Sport Exige Cup 260: August 2009

Adoption of Exige S front clam and rear aerofoil (see above) using some carbon elements. Strengthened engine bay undertray with new fixings to provide 'shear panel' stiffening of subframe suspension mounts. Ohlins 2-way adjustable dampers. Lightened Lotus Sport 5-spoke wheels. Carbon centre console.

Exige S Type 72: December 2009

Celebrates Type 72 F1 twenty GP victories. Limited edition of 20 for U.K., 20 for Europe, plus selected RoW territories. Phantom Black with gold pin-striping, gold Exige S on rear, Type 72 on passenger 'B' panel. Sport and Touring Packs. Machined forged 5-spoke wheels in black and gold. Black microfibre trim with gold stitching. Build plaque with GP win.

Exige Scura/Stealth: January 2010

Limited edition of 35 cars for Europe and some RoW territories. Badged as 'Stealth' for Japan. Based on Exige S with Cup 260 features including powertrain, suspension and body. Soft feel matt black paint finish with gloss Phantom Black triple stripes. Forged 10-splitspoke wheels in matt black. Laquered carbon fibre seat shells and centre tunnel. Anthracite gear knob and parking brake sleeve.

2011 M.Y. Introduction: March 2010

VIN character 10 = B. VIN serial number restarts at 0001.

Exige range unchanged. Changes to Elise range include: Revised front body with enlarged oil cooler intake ducts and chin spoilers, restyled radiator outlet ducts, one-piece lift out access cover, aluminium mesh grilles. Revised rear body with restyled bumper incorporating licence plate plinth, new engine/boot lid, aluminium mesh grilles, separate rear transom panel without faux end grilles, new diffuser. New headlamp units incorporating LED turn lamps and LED daytime running lamps. New 12-spoke cast roadwheels, or new 5-'Y'spoke forged wheels. Elise S model replaced by base Elise with 1.6 ltr. IZR FAE engine, featuring inlet and exhaust cam VVT-i, and VALVEMATIC inlet valve lift control, Lotus T6 controller; new 6-speed type EC60 transmission; revised rear subframe; optional cruise control.

Page 9

Lotus Service Notes Introduction

ENGINE BAY UNDERTRAY/DIFFUSER

For certain service operations, it may by necessary to remove the engine bay undertray and/or diffuser panel. The panels contribute to the aerodynamic performance of the car, and also help to keep the engine bay clean. Do not run the car without the panels fitted.

Typical model shown - others similar

3 screws to licence 1 screw each side plate plinth to grille panel

b275b

Diffuser panel 3 screws each side Single screw each to tank bay side to clamshell panel Undertray front edge M8 button head slots into (2) to subframe 5 screws M8 button head chassis undertray (2) to lower to diffuser link brackets

Page 10

Lotus Service Notes Introduction

JACKING POINTS

Care must be taken when using a lifting jack or hoist to position the device only in one of the the areas shown in the illustration, with a suitable rubber or timber pad protecting the chassis from surface damage. If a 4-point lift is to be used, the engine bay undertray/diffuser panel (if fitted) must first be removed. When using a 4-point lift, it is strongly recommended that for optimum stability and safety, positions B and D are used. A; Identified by a blue sticker. Beneath crossmember ahead of fuel tank bay. To be used one side at a time

for wheel changing - lifts both wheels on one side. Do not use with a four point garage lift.

B; Beneath the front end of the right or left hand main chassis rail, behind the front wheelarch. Garage use

with 4-point lift in conjunction with (C).

C; The engine undertray/diffuser panel must rst be removed. Beneath the outboard end of the chassis

crossmember ahead of the rear wheelarches. Take care to position the jack between the fixing screws for the fuel tank bay perforated undershield. Garage use with 4-point lift in conjuction with (B).

D; The engine undertray/diffuser panel must rst be removed. Beneath the rear subframe, close to the lower

wishbone rearmost mountings.

Jacking at any other point may damage the chassis or body structure and/or jeopardise safety.

ohs49sn

Publication Part Number A120T0327J © Lotus Cars Ltd. May 2010

This publication has been designed for use by Lotus Dealers familiar with general workshop safety procedures and practices. Take all appropriate action to guard against injury to persons or damage to property.

Lotus policy is one of continuous product improvement, and the right is reserved to alter specifications at any time without notice.

Whilst every care has been taken to ensure correctness of information, it is impossible to guarantee complete freedom from errors or omissions, or to accept liability arising from such errors or omissions, but nothing herein contained shall affect your statutory rights.

Page 1

Lotus Service Notes Introduction

CONTENTS

ELISE & EXIGE; 2004 M.Y. ONWARDS; WITH 1ZZ/2ZZ/1ZR ENGINE

Section Technical Data - Engine TDP

- Vehicle TDQ

Chassis AH

Bodycare & Repair BQ

Body Fittings BR

Front Suspension CI

Rear Suspension DH

Engine & Engine Management - Lotus supplement EH

- Toyota 1ZZ/2ZZ repair manual *

* see separate manual E120T0327J

- Toyota 1ZR repair manual ** ** see separate CD T000T1523F

Engine Management EMP

Transmission - Lotus supplement FJ

- Toyota C64/C56 repair manual #

# see separate manual E120T0327J

- Toyota EC60 repair manual ## ## see separate CD T000T1523F

Wheels & Tyres GH

Steering HG

Brakes JJ

Engine Cooling KH

Fuel System - Except North America LJ

- North America LK

Electrics MP

Circuit Diagrams: non - USA prior '06 MP14a Circuit Diagrams: USA - prior '06 MP14b Circuit Diagrams: '06 Onwards MP14c Circuit Diagrams: '08 Onwards MP14d Circuit Diagrams: '11 Onwards 1ZR Powertrain MP14e

Maintenance & Lubrication OI

Air Conditioning, Heating & Ventilation PL

Clutch QH

Supplementary Restraint System - SRS (Airbags) WD

Supplement - Exige Supercharged (S/C) Exige S/C

Supplement - 2-Eleven 2-Eleven

Updated 18th May 2010

Page 2

Lotus Service Notes Introduction

VEHICLE IDENTIFICATION NUMBER & ENGINE NUMBER

The Vehicle Identification Number (V.I.N.) is stamped on the chassis in the right hand front wheelarch area, viewable with the front wheels turned to right full lock, and is also printed on a label stuck to the inside of the chassis sideframe alongside the driver's seat. 1ZZ and 2ZZ engine numbers are marked on a vertical patch at the right hand side of the rear face of the cylinder block, adjacent to the clutch housing.

On the 1ZR engine, the number is stamped on the left hand front of the cylinder block, alongside the alternator, and is prefaced by ‘1ZR’.

Both V.I.N. and engine numbers should always be quoted with any vehicle enquiries, as Factory records are filed against V.I.N., and specification change points are identified by V.I.N. or engine number. The vehicle licence plate should be disregarded in this context as it may not accurately reflect vehicle age, and may also be changed during the car’s life.

The V.I.N. comprises 17 characters, coded in accordance with European Economic Community (EEC) and National Highway Traffic Safety Association (NHTSA) directives. For change point identification in Service Notes, Service Bulletins and Service Parts Lists, typically, only characters 10 (model year), and 14 to 17 (serial number) will be quoted.

V.I.N. ON CHASSIS

ohs119a

V.I.N. LABEL

ohs104 1ZZ/2ZZ ENGINE NUMBER ohs133

:2

5

1ZR ENGINE NUMBER

ohs176

Page 3

Lotus Service Notes Introduction

2010 M.Y. serial no. 0360 onwards

S C C L H 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Manufacturer Code

Brand

L = Lotus

Model HC = Elise

HH = Exige NB = 2-Eleven

Engine

A = 2ZZ s/c 260 c/c B = 2ZZ s/c 260 c/c no evap C = 2ZZ 190 no evap L = Motorsport

P = 2ZZ 190 evap V = 2ZZ s/c 220 c/c

W = 2ZZ s/c 240 c/c X = 1ZR 135 Y = 1ZZ 140 Z = 2ZZ s/c 220

Restraint A = 3pt no SIR

C = Dual SIR L = 4pt no SIR S = 5pt no SIR

Check Digit

Model Year

A = 2010 B = 2011 C = 2012 D = 2013 E = 2014 F = 2015

Plant H = Hethel

Market Spec.

A = LHD USA G = LHD SVA B = LHD Canada H = LHD Track C = RHD Other J = RHD Track D = LHD Other L = South Korea E = Gulf States F = RHD SVA

Build Type 1 = Std.

2 = Proto.

Serial Number

2004 M.Y. - 2010 M.Y. serial no. 0359 Assembly Plant Model Vehicle Type H = Hethel 2 = 2-Eleven Manufacturer 111 = Elise/Exige Check B = Shah 3 = Elise Identifier Code 123 = 2-Eleven Digit Alam 8 = Exige

S C C

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Engine Type Restraint Model Year Chassis/Body Serial A = 2ZZ s/c 260 c/c A = Active belts 4 = 2004 A = LHD Fed. Number C = 2ZZ 190 no evap C = Dual S.I.R. 5 = 2005 C = RHD L = Motorsport + active belts 6 = 2006 D = LHD N = 2ZZ s/c 255 7 = 2007 F = U.K. SVA RHD P = 2ZZ 190 evap 8 = 2008 G = U.K. SVA LHD V = 2ZZ s/c 220 c/c 9 = 2009 H = M/sport LHD* * Track only. Not W = 2ZZ s/c 240 c/c A = 2010 J = M/sport RHD* approved for road use Y = 1ZZ 140 L = LHD Fed. a.c. Z = 2ZZ s/c 220 M = LHD Can. a.c. N = RHD a.c. P = LHD a.c.

Page 4

Lotus Service Notes Introduction

MODEL HISTORY MILESTONES (does not include all special editions)

Elise 111R Introduction: January 2004

VIN character 4 = P; Character 13 = 3; Serial number from 0970

Note that the serial number sequence is shared with other Elise variants.

Changes from previous model include: Toyota powertrain with 1.8 litre VVTL-i engine and 6-speed transmission. Twin exhaust tailpipes exiting through centre of diffuser. Larger fuel tank with new pump. Revised chassis rail rear ends, new rear subframe, revised seat belt mounting frame backstays. Revised rear suspension wishbones, springs and dampers. ABS brake control with vacuum servo. Revised front bonnet grilles and access covers.

2004 Exige Introduction: March 2004

VIN character 4 = P; Character 13 = 8; Serial number from 1092

Note that the serial number sequence is shared with other Elise variants.

Differences compared with Elise 111R include: Restyled front and rear clamshells with roof scoop, new tailgate panel and strut mounted rear aerofoil. Front body splitter panel. Re-styled road wheels, wider on the front, and Yokohama A048 tyres.

2005 M.Y. Elise for North America: May 2004

VIN character 10 = 5; Character 12 = L; Serial number from 0001

Note that the serial number sequence is shared with other Elise variants when '05 M.Y. is adopted for those models later in the year.

Differences compared with Elise 111R include: Driver and passenger airbags, pyrotechnic seat belt pretensioners; Re-styled fascia and dashboard structure; Front speakers moved onto top surface of fascia, stowage pockets incorporated into dashboard end panels, fixed windscreen demist vents. Engine start button in driver's side switch panel. Revised springs and dampers, Yokohama AD07 tyres. Side marker lamps on front and rear wheelarch lips. Revised fuel system with fuel filler flap.

Lotus Sport Exige 240R: March 2005

Limited edition of 50 units produced as post registration official factory conversions of '05 Exige by the Lotus Sport workshops at Hethel, for U.K. and certain overseas territories. The car is not identifiable from the VIN coding.

Differences compared to standard Exige include: 243 bhp engine upgrade using Eaton M62 supercharger with integral by-pass valve, air/air chargecooler and 5th fuel injector. Re-programmed ECU. Accusump. Stiffened springs & Ohlins adjustable dampers. Adjustable front anti-roll bar. Chassis rear brace kit. Forged 5-spoke widened roadwheels & Yokohama A048 tyres. Motorsport brake pads, braided hoses, yellow callipers, Castrol SRF brake fluid. Sport Yellow body colour with black wheels, or Sport Black body with silver wheels. Black interior with yellow inserts. 4-point harnesses, T45 roof hoop and backstays.

2006 M.Y. Introduction: September 2005

VIN character 10 = 6; Serial number restarts at 0001, common to all variants.

Introduction of USA Exige and Canadian Elise.

5-speed Elise remains unchanged.

Differences between 6-speed '06 Elise and '05 include; Electronic throttle control (using no mechanical cable). Optional Lotus Traction Control (LTC) or Limited Slip Differential (LSD) with LTC. Standard fit Yokohama AD07 tyres on non-USA cars. Optional forged wheels with new 6.0 in front size. LED rear lamp clusters incorporating reflectors (formerly separate), and commonised USA type CHMSL. ProBax seat foams. New body colours. USA & Canadian Elise; revised fuel tank and evap. loss system. Canadian Elise uses daytime running lights and clutch down start allow switch. USA Exige similar to non-USA, but with USA airbag interior.

Sports Racer: October 2005

Special paint versions of '06 M.Y. 111R in either Ardent Red with triple Monaco White stripes, or Nightfall Blue with twin Monaco White stripes. Combined total of 199 units with unique build plate on sill. Forged wheels (6J on front), AD07 tyres, sport suspension, twin front oil coolers, LTC. Black leather interior with red or blue stitching, and red or blue 'Elise' embroidered into head restraints. Sports Racer decals.

Page 5

Lotus Service Notes Introduction

Exige Cup 190 & 240: January 2006

Limited number of competition oriented naturally aspirated (190) or supercharged (240) models produced as post registration official factory conversions of '06 Exige by the Lotus Sport workshops at Hethel for U.K. and certain overseas territories. Not identifiable from VIN coding.

Differences compared to 240R (see above) include: Electronic throttle, high flow port injectors (no 5th). Cup 240 fitted with torque sensing LSD with LTC. Cup 190 uses friction plate LSD. Standard Exige wheels in 'Hi-power' silver. Race cars fitted with FIA 6-point roll cage, remote kill switch, extinguisher system. Standard body colours.

Exige S: February 2006

VIN character 4 = V

Factory built type approved supercharged Exige. Not USA.

Differences to standard Exige include: 221 PS supercharged engine similar to 240R but using electronic throttle, smooth flow inlet adaptor, standard injectors without 5th injector, modified downpipe, optimised muffler with single oval tailpipe. Enlarged roof duct inlet for chargecooler. Body colour splitter, scoops and aerofoil. 'Exige S' decal on rear transom, 'S' on front quarter panels.

USA Lotus Sport Elise: March 2006

Limited edition of 50. Saffron Yellow with twin Storm Titanium stripes. Saffron Yellow centre console. Yellow highlighted sports seats, 'carbon' door trim inserts. Harness bar, T45 seat belt mounting frame. Motorsport mats, stalks, winders and parking brake sleeve. Traction control, supersport suspension, black forged wheels, Yokohama A048s, braided brake hoses, silicone fluid, motorsport clutch. Lotus Sport decals and Union flags. Lotus Sport chassis plate.

2007 M.Y. & Elise S Introduction: June 2006

VIN character 10 = 7; Serial number restarts at 0001, common to all variants.

VIN character 4 identifies engine type. Elise S = Y

Differences between '07 Elise/Exige and '06 include: Elise 111R renamed Elise R; New sealed headlamp units; raised LOTUS lettering on rear transom; additional screen pillar seal; Alpine audio; improved HVAC ducting. New model Elise S uses 1ZZ-FE engine producing 100 kW, with variable inlet timing but fixed valve lift, plastic inlet manifold, revised intake snorkel, revised exhaust manifold and downpipe, smaller tailpipes within standard trims. Elise S also uses new C56 5-speed transmission and 6-spoke roadwheels sharing styling of standard '01 model wheels.

USA Exige S: October 2006

The specification of the USA Exige S is that of the standard USA Exige and option packs, apart from the engine, which is as non-USA Exige S with the following exceptions: High flow port injectors, specific engine programming, 223 PS, 223 Nm. Carry-over features from the non-USA Exige S include exhaust downpipe and optimised muffler with single oval tailpipe, roof air intake funnel mouth.

Exige S British GT Special Edition: November 2006

Celebrating Lotus Sport Cadena’s 2006 British GT3 Team Championship victory.

Differences to standard Exige S include: Torsen LSD & Lotus Traction Control. Chassis rear brace kit. T45 roof hoop & stays. Braided brake hoses. Level 1 sports exhaust. Forged 7-bifurcated spoke silver wheels. Lotus Sport black metallic body colour with Sport yellow & Arctic silver quad stripes, supplier decals on sills, Lotus Sport visor strip, Cadena decals on front wings, GT3 decal on rear clam, GT3 winners decal with unique build number on rear quarter panel, Lotus Sport build plate with build number. 4-point harnesses, black/yellow door trims and unique black/yellow trimmed seats. Optional a.c. Optional GT pack available as post registration official factory conversion by Lotus Sport workshops at Hethel for U.K. and certain overseas territories, includes: High flow injectors, different ECU & unique calibration for 243 bhp, Accusump, 2-way adjustable Ohlins dampers with uprated springs, 308mm front discs & 4-piston A.P. callipers, Pagid pads, Castrol SRF brake fluid.

Page 6

Lotus Service Notes Introduction

USA Low Speed Damage Mitigation: January 2007

From ‘07 USA VIN serial no. 1579.

To meet USA safety legislation, modifications made to Elise/Exige: Front; armatures and foam inserts added between crash structure and clamshell. Rear; bumper panel housing foam pads either side of licence plate, narrower rear grilles, reinforced boot floor and diffuser support panel, stiffened diffuser. Some elements commonised for all markets.

Lotus Sport Exige Cup 255: January 2007

Produced as post registration official factory conversions of '07 Exige S by the Lotus Sport workshops at Hethel for certain territories, excluding U.K. and USA. Not identifiable from VIN coding.

Based on Exige Cup 240 (see above) with following differences: Power increase to 255 PS by; unique ECU calibration, enlarged chargecooler, extended roof duct, larger air cleaner and intake spout, uprated fuel pump. A.P. Racing 4 piston alloy front callipers, 308mm front discs.

2-Eleven Introduction: May 2007

VIN character 6/7/8 = 123; Character 13 = 2

Extreme, minimalist, track focussed Elise variant based on Exige Cup 255 powertrain componentry, but using new chargecooler arrangement. Produced in small numbers for U.K. and certain overseas territories. In U.K. only, SVA road going version available. All other territories only for track use, in LHD or RHD.

New body with no doors or roof. Aeroscreen. Rear aerofoil in two versions. FIA compliant roll over bar. Chassis rear brace, unique front top wishbones and steering arms, optional Ohlins suspension. Accusump, twin front oil coolers. Standard LTC, optional variable LTC & Launch Control. Uprated clutch. Odyssey battery. Limited warranty for SVA cars. Extensive options list.

USA Elise Limited Edition 'Type 72D'

Limited edition of 50 cars to commemorate the 35th anniversary of Lotus' F1 1972 World Championship victory with the type 72D.

Phantom black body colour with hand painted gold pinstriping. Rear body spoiler, black diffuser. Gold laurel leaf decal on front quarters, gold 'Elise' and 'Type 72D' decals, gold raised LOTUS lettering, gold/black nosebadge, gold fuel filler cap. Gold Exige 8 split-spoke wheels with Yokohama A048 tyres and sports suspension. Black & gold seats and interior trim details with Limited Edition plaque. Scale model crash helmet.

Club Racer: September 2007

Limited edition of 25 for U.K. Unlimited for Europe.

For U.K., spec. based on '07 Exige S with Sport, Touring & Super Touring packs and a.c.. Sports exhaust supplied for dealer fitment.

For Europe, spec. based on '08 Exige S (see below) with Sport and Performance packs. Forged wheels.

All cars: Hethel track decal on rear transom, Le Mans blue body with Phantom black triple stripe. Black leather and carbon effect trim with colour coded stitching.

Introduction of 2008 Model Year Elise/Exige: October 2007

VIN character 10 = 8. VIN serial number restarts at 0001. Exige N.A. built only to special order.

All cars now with dual airbags and start button in matt charcoal finish fascia. PFK 457 security system with Lotus design transmitter key. Tyre pressure monitoring for USA only. High rpm sequential tell tales. CAN bus diagnostics using laptop Lotus Techcentre. New paint colours. Performance Pack option (VIN character 4 = W) with 240 hp calibration, high flow injectors, big roof scoop, uprated clutch, 4-piston front brake callipers and enlarged front discs, variable traction and launch control (excludes warranty).

Elise S Hethel 40th Limited Edition: October 2007

Commemorating 40 years of production at Hethel. All LHD.

'08 M.Y. Elise S in Burnt Orange with hardtop. Orange body grilles and centre console. Black diffuser and wheels. Black leather seats and door trim with orange stitching. Build plaque. Country decals below side repeater lamps. 7 Union Flag, 6 Swiss, 2 Belgium, 4 French, 10 German, 6 Italian.

Page 7

Lotus Service Notes Introduction

Elise 'California' Limited Edition: October 2007

USA only. 25 off Ardent Red with cream/red leather and champagne trim; 25 off Saffron Yellow with black leather and champagne trim.

Based on USA Elise with touring pack. Rear body spoiler. Silver front intake grilles, other grilles in body colour. 16-spoke cast wheels in Hi-power silver, AD07 tyres. Lotus roundel and California decals on front wings. Sports seats in cream & red or black leather. Other trim in cream & red or black leather. Hardtop lining in Beige cloth. RHD footwell divider.

Exige Sprint: November 2007

Limited edition of 40 cars for U.K. market, one for each year from 1967 to 2006. +20 E.U. +2 Japan.

'08 M.Y. Exige S with Sport, Touring and Performance Pack, a.c., black forged wheels, 2-tone paint in Aspen White and either Persian Blue or Saffron Yellow, with gold decal strip and 'Exige Sprint' logo. Union flag on rear body, laurel decal on LHR quarter, colour coded leather seats and trim, embroidered footwell carpet mats. Build plaque on chassis sill.

Introduction of Elise SC: February 2008 (nal '07 M.Y. serial no. 3579)

Supercharged Elise without chargecooler.

VIN character 4 = Z

Based on Elise R, but using new Eaton M45 supercharger rotor pack integrated into inlet manifold, high flow fuel injectors and unique calibration to produce 220 PS. Rear body spoiler, Lotus styled 12-spoke road wheels in 6.0 and 8.0 front/rear widths, standard AD07 tyres. Wheelarch lips on non-USA cars. 'Elise Supercharged' decals on rear transom and front wings.

Lotus Sport Exige Cup 260: February 2008

Fully Type Approved version of Exige Cup 255 (see above).

VIN character 4 = A

Based on Exige S with: Big roof scoop, high output fuel pump, unique calibration to produce 260 PS. Accusump, lightweight flywheel, uprated clutch, Torsen LSD, Variable Traction and Launch control (excludes warranty). 4-piston front brake callipers and enlarged front discs, braided hoses, Bilstein or Ohlins adjustable spring/dampers, stiff adjustable ARB in hard mounts, hi-power silver 16-spoke cast wheels, A048 tyres. FIA compliant battery isolator and plumbed-in fire extinguisher. T45 seat belt anchorage frame. FIA compliant cage and 4-point harnesses supplied separately. NO airbags and none pre-tensioner 3-point belts. No CDL. Black Alcantara/carbon effect seats and door trim. Build plaque on dash, 'Lotus Sport' decal on front quarter panels, 'Cup 260' decal on rear transom, black diffuser. Restricted warranty.

USA Elise SC '60th Anniversary': May 2008

Limited edition of 60 USA cars to commemorate 60th anniversary of Lotus Cars.

Based on Elise SC with hard and soft tops, Touring and Sport Packs, supersport suspension, forged wheels, A048 tyres, T45 seat belt frame & harness bar. Body and double stripe paint in BRG/Saffron, Saffron/ Black, Black/Arctic, Storm Titanium/Canyon Red. Complimentary trim inserts and 60th Anniversary embroidery. Anniversary decal on rear transom.

Clark Type 25 Elise SC: June 2008

Limited edition of 25 U.K./25 E.U./25 USA cars to commemorate 40th anniversary of Jim Clark's death. Donation to the Jim Clark memorial fund.

Based on Elise SC with hard top and Sport Pack. BRG (B04) with Saffron single centre stripe, Lotus Sport wheels with black spokes and silver rims, A048 tyres. Black & red leather themed interior, with sports seats, wood gearknob and build plaque. Type 25 decal on rear transom, Jim Clark signature on LH buttress and inner door panels, race roundels on doors with Type 25 decals. USA cars used 7-splitspoke black forged wheels, alloy gear knob, black diffuser.

2009 M.Y. Introduction: September 2008 (nal '08 cars: Elise 2308; Exige 2304; 2-Eleven 2292)

VIN character 10 = 9. VIN serial number restarts at 0001.

No changes apart from Cup 260.

Page 8

Lotus Service Notes Introduction

2009 M.Y. Lotus Sport Exige Cup 260: October 2008

Lightweight body panels using carbon fibre, rear window deleted from rear bulkhead. Lightweight components incl. battery, c/c U-bends, billet flywheel, new forged 12-spoke roadwheels in 7 & 8 inch widths, rear subframe with DeltaProtekt coating, deletion of footwell pads, interior mirror, sunvisors, tailgate strut. HANS approved seats. Body coloured SBAF 'A' frame. Chassis drilled for front cage. New body graphics.

2010 M.Y. Introduction: May 2009 (nal '09 cars: Elise TBA; Exige; TBA; 2-Eleven TBA; USA TBA)

VIN character 10 = A. VIN serial number restarts at 0001.

Elise range unchanged. Exige S (on USA & Gulf only from 0360): Front clamshell with restyled lower section including larger air intake ducts with a horizontal vane in each oil cooler duct. New full width body colour front splitter. Wider, body mounted rear aerofoil, supported by end plates. All models: reduced emissions and improved economy figures.

2010 M.Y. Lotus Sport Exige Cup 260: August 2009

Adoption of Exige S front clam and rear aerofoil (see above) using some carbon elements. Strengthened engine bay undertray with new fixings to provide 'shear panel' stiffening of subframe suspension mounts. Ohlins 2-way adjustable dampers. Lightened Lotus Sport 5-spoke wheels. Carbon centre console.

Exige S Type 72: December 2009

Celebrates Type 72 F1 twenty GP victories. Limited edition of 20 for U.K., 20 for Europe, plus selected RoW territories. Phantom Black with gold pin-striping, gold Exige S on rear, Type 72 on passenger 'B' panel. Sport and Touring Packs. Machined forged 5-spoke wheels in black and gold. Black microfibre trim with gold stitching. Build plaque with GP win.

Exige Scura/Stealth: January 2010

Limited edition of 35 cars for Europe and some RoW territories. Badged as 'Stealth' for Japan. Based on Exige S with Cup 260 features including powertrain, suspension and body. Soft feel matt black paint finish with gloss Phantom Black triple stripes. Forged 10-splitspoke wheels in matt black. Laquered carbon fibre seat shells and centre tunnel. Anthracite gear knob and parking brake sleeve.

2011 M.Y. Introduction: March 2010

VIN character 10 = B. VIN serial number restarts at 0001.

Exige range unchanged. Changes to Elise range include: Revised front body with enlarged oil cooler intake ducts and chin spoilers, restyled radiator outlet ducts, one-piece lift out access cover, aluminium mesh grilles. Revised rear body with restyled bumper incorporating licence plate plinth, new engine/boot lid, aluminium mesh grilles, separate rear transom panel without faux end grilles, new diffuser. New headlamp units incorporating LED turn lamps and LED daytime running lamps. New 12-spoke cast roadwheels, or new 5-'Y'spoke forged wheels. Elise S model replaced by base Elise with 1.6 ltr. IZR FAE engine, featuring inlet and exhaust cam VVT-i, and VALVEMATIC inlet valve lift control, Lotus T6 controller; new 6-speed type EC60 transmission; revised rear subframe; optional cruise control.

Page 9

Lotus Service Notes Introduction

ENGINE BAY UNDERTRAY/DIFFUSER

For certain service operations, it may by necessary to remove the engine bay undertray and/or diffuser panel. The panels contribute to the aerodynamic performance of the car, and also help to keep the engine bay clean. Do not run the car without the panels fitted.

Typical model shown - others similar

3 screws to licence 1 screw each side plate plinth to grille panel

b275b

Diffuser panel 3 screws each side Single screw each to tank bay side to clamshell panel Undertray front edge M8 button head slots into (2) to subframe 5 screws M8 button head chassis undertray (2) to lower to diffuser link brackets

Page 10

Lotus Service Notes Introduction

JACKING POINTS

Care must be taken when using a lifting jack or hoist to position the device only in one of the the areas shown in the illustration, with a suitable rubber or timber pad protecting the chassis from surface damage. If a 4-point lift is to be used, the engine bay undertray/diffuser panel (if fitted) must first be removed. When using a 4-point lift, it is strongly recommended that for optimum stability and safety, positions B and D are used. A; Identified by a blue sticker. Beneath crossmember ahead of fuel tank bay. To be used one side at a time

for wheel changing - lifts both wheels on one side. Do not use with a four point garage lift.

B; Beneath the front end of the right or left hand main chassis rail, behind the front wheelarch. Garage use

with 4-point lift in conjunction with (C).

C; The engine undertray/diffuser panel must rst be removed. Beneath the outboard end of the chassis

crossmember ahead of the rear wheelarches. Take care to position the jack between the fixing screws for the fuel tank bay perforated undershield. Garage use with 4-point lift in conjuction with (B).

D; The engine undertray/diffuser panel must rst be removed. Beneath the rear subframe, close to the lower

wishbone rearmost mountings.

Jacking at any other point may damage the chassis or body structure and/or jeopardise safety.

ohs49sn

Page 1

Lotus Service Notes Section TDP

TECHNICAL DATA - ENGINE

SECTION TDP

Page

General .................................................................................................................... 2

Cylinder Block .......................................................................................................... 3

Cylinder Head .......................................................................................................... 3

Valves & Springs ...................................................................................................... 3

Camshafts ................................................................................................................ 3

Pistons ..................................................................................................................... 3

Connecting Rods ...................................................................................................... 3

Crankshaft ............................................................................................................... 3

Oil Pump .................................................................................................................. 3

Coolant Thermostat .................................................................................................. 4

Page 2

Lotus Service Notes Section TDP

GENERAL (for supercharged cars see section Exige S/C) Type designation - All nat. asp.except Elise S 2ZZ-GE

- Elise S 1ZZ-FE

- 2011 Elise 1ZR-FAE

Configuration & no. of cylinders in-line 4 - Capacity 1796 cm3 1794 cm³ 1598 cm

3

Bore 82.00 mm 79.00 mm 80.50 mm Stroke 85.00 mm 91.50 mm 78.50 mm Camshafts Chain drv DOHC - Valves 4VPC in pentroof - chambers Valve control - inlet Variable timing Variable timing Variable timing & 2 stage lift & lift

- exhaust Variable lift - Variable timing Valve timing - inlet - low & med speed - open 33°BTDC to 10° TDC

- close 15°ATDC to 58°ATDC

- high speed - open 58° BTDC to 15° BTDC

- close 54° ABDC to 97° ABDC

- all speeds - open 48°BT to 5°BT 10°BT to 70°AT

- close 12°AT to 55°AT 70°AB to 60°BB

- exhaust - low & med speed - open 14° BBDC

- close 34° ATDC

- high speed - open 36° BBDC

- close 60° ATDC

- all speeds - open 42° BBDC 65°BB to 30°BB

- close 2° ATDC 1°BT to 34°AT Compression ratio 11.5:1 10.0:1 10.7:1 Compression pressure (250 rpm) - new 1400 kPa 1500 kPa 1400 kPa

- service limit 1000 kPa - Firing order 1,3,4,2 - Spark plugs NGK IFR6A11 NGK BKR5EYA-11 Denso 20HR11 Spark plug gap 1.1 mm 1.0 ± 0.05 mm 1.0 - 1.1 mm Maximum continuous engine speed 8000 rpm 6,800 rpm 6,800 rpm Maximum transient engine speed 8500 rpm 7,000 rpm 7,000 rpm Idle speed 850 rpm 850 rpm 760 rpm Ignition system Direct ignition - Plug top coils - Fuel system Fully sequential - indirect injection, - Lotus T4 ECU - Lotus T6 ECU Fuel requirement (minimum) Unleaded 95 RON - Peak power (1999/99/EC) 141 kW (192 PS) 100 kW (136 PS) 100kW(136 PS) @ 7,800 rpm @ 6,200 rpm @ 6,800 rpm Peak torque (1999/99/EC) 181 Nm 172 Nm 160 Nm @ 6,800 rpm @ 4,200 rpm @ 4,400 rpm Exhaust emissions - CO 0.42 g/km 0.23 g/km 0.27 g/km

- HC (THC) 0.078 g/km 0.050 g/km 0.064 g/km

- NMHC 0.058 g/km

- NOx 0.0121 g/km 0.0217 g/km 0.025 g/km

- HC + NOx 0.0901 g/km 0.0717 g/km

- CO2 - pre '10 208 g/km 196 g/km

- 2010 on 196 g/km 179 g/km 155 g/km

Page 3

Lotus Service Notes Section TDP

2ZZ-GE 1ZZ-FE 1ZR-FAE CYLINDER BLOCK Material Aluminium alloy, Aluminium alloy, Aluminium alloy MMC bores cast iron liners cast iron liners Deck face flatness tolerance 0.05 mm - Cylinder bore diameter (mm) 82.000 - 82.013 79.000 - 79.013 80.500 - 80.633

CYLINDER HEAD Material Aluminium alloy - Head face flatness tolerance 0.05 mm - Reface limit No machining - -

VALVES & SPRINGS Valve seat angle in head 45° - Valve face angle 44.5° - Cold valve clearance (cam & follower) - inlet 0.10 - 0.16 mm 0.15 - 0.25 mm Hydraulic

- exhaust 0.24 - 0.30 mm 0.25 - 0.35 mm Hydraulic Valve guide standout - inlet 15.3 - 15.7 mm 8.7 - 9.1 mm 9.0 - 10.3 mm

- exhaust 15.3 - 15.7 mm 8.7 - 9.1 mm 11.15 - 11.55 Valve spring free length - inlet 46.4 mm 45.9 mm 53.4 mm

- exhaust 46.5 mm 45.9 mm 53.4 mm

CAMSHAFTS End float - new 0.04 - 0.14 mm 0.04 - 0.10 mm 0.06 - 0.16 mm

- service limit 0.15 mm 0.11 mm 0.17 mm

PISTONS Diameter - @ 90° to pin, 12 mm from bottom edge 81.975 - 81.993 80.470 - 80.496

- @ 90° to pin, 25 mm from top edge 78.925 - 78.935 Ring gap - 110 mm from bore top - std. - no.1 0.25 - 0.35 mm -

- no.2 0.35 - 0.50 mm -

- oil rail 0.15 - 0.40 mm -

- max. - no.1 1.1 mm -

- no.2 1.2 mm -

- oil rail 1.1 mm -

- 50 mm from bore top -std. - no.1 0.20 - 0.30 mm

- no.2 0.30 - 0.50 mm

- oil rail 0.10 - 0.40 mm

- max. - no.1 0.50 mm

- no.2 0.70 mm

- oil rail 0.70 mm Ring groove clearance 0.030 - 0.070 mm - 0.02 - 0.07 mm

CONNECTING ROD Small end bush inside diameter 20.011 - 20.023 20.012 - 20.021 20.012 - 20.021 Big end side clearance 0.16 - 0.34 mm - -

CRANKSHAFT Crankshaft endfloat - new 0.04 - 0.24 mm 0.04 - 0.24 mm 0.04 - 0.14 mm

- service limit 0.30 mm 0.30 mm 0.18 mm Main journal diameter 47.988 - 48.000 - Crankpin diameter 44.992 - 45.000 43.992 - 44.000 43.992 - 44.000 Max. taper & out of round, journals & crankpins 0.02 mm 0.02 mm 0.004 mm

OIL PUMP Oil pressure - idle, running temperature 39 kPa min. 29 kPa min. 25 kPa min.

- 3,000 rpm, running temperature 300 - 540 kPa 300 - 540 kPa 150 - 550 kPa

Page 4

Lotus Service Notes Section TDP

2ZZ-GE 1ZZ-FE 1ZR-FAE Outer rotor to housing clearance - new 0.13 - 0.18 mm - 0.12 - 0.19 mm

- service limit 0.33 mm - Inner rotor tip clearance - new 0.06 - 0.18 mm - 0.08 - 0.16 mm

- service limit 0.33 mm - Rotor end float - new 0.03 - 0.08 mm - 0.09 - 0.14 mm

- service limit 0.16 mm - -

COOLANT THERMOSTAT Valve opening temperature 80 - 84°C Valve lift 10 mm @ 90°C - 10 mm @ 82°C Header tank pressure cap 108 kPa - Cap opening pressure 93 - 123 kPa - -

Page 1

Lotus Service Notes Section TDQ

TECHNICAL DATA - VEHICLE

SECTION TDQ

Page

Dimensions ........................................................................................................ 2

Capacities .......................................................................................................... 3

Wheels & Tyres ................................................................................................... 3

Front Suspension ................................................................................................. 4

Rear Suspension ................................................................................................. 4

Electrical ............................................................................................................. 5

Transmission ....................................................................................................... 6

Clutch .................................................................................................................. 6

Brakes ................................................................................................................. 7

Steering ............................................................................................................... 7

Fuel Consumption ............................................................................................... 7

Updated 9th June 2010

Lotus Service Notes Section TDQ

Page 2

DIMENSIONS Overall length - Elise - pre 2011 3785 mm

- 2011 on 3824 mm

- Exige 3797 mm Overall width - exc. mirrors - Elise 1719 mm

- Exige 1727 mm

- inc. mirrors 1850 mm (approx.) Overall height (at kerb weight) - Elise 1117 mm

- Exige 1159 mm Wheelbase 2300 mm Track - front 1457 mm

- rear 1507 mm Ground clearance (mid-laden) - except std. USA 130 mm

- std. USA 135 mm Front overhang - Elise - pre '11 783 mm

- '11 on 805 mm

- Exige 805 mm Rear overhang - Elise - pre '11 702 mm

- '11 on 719 mm

- Exige 692 mm Approach angle (at kerb) - pre '11 13.5°

- '11 on 12.5° Departure angle (at kerb) 23° Unladen weight - 111R/Elise R - total 860 kg > (lightest) - front 327 kg > incl. full fuel tank

- rear 533 kg >

- Elise S - total 862 kg } (lightest) - front 328 kg } incl. full fuel tank

- rear 534 kg }

- USA Elise - total 912 kg ) (heaviest) - front 344 kg ) incl. full fuel tank

- rear 568 kg )

- Elise 2011 - total 876 kg ] (lightest) - front 342 kg ] incl. full fuel tank

- rear 534 kg ]

- non-USA Exige - total 875 kg >

- front 328 kg > incl. full fuel tank

- rear 547 kg >

- non-USA Exige S - total 935 kg }

- front 355 kg } incl. full fuel tank

- rear 580 kg }

- USA Exige - total 920 kg )

- front 350 kg ) incl. full fuel tank

- rear 570 kg ) Max. weight - 111R/R, Exige - total 1166 kg >

- front 443 kg > incl. occupants & luggage

- rear 723 kg >

- Elise S - total 1126 kg }

- front 428 kg } incl. occupants & luggage

- rear 698 kg }

- USA Elise - total 1162 kg )

- front 441 kg ) incl. occupants & luggage

- rear 721 kg )

- Elise 2011 - total 1141 kg ]

- front 429 kg ] incl. occupanta & luggage

- rear 712 kg ]

- non-USA Exige S - total 1199 kg >

- front 456 kg > incl. occupants & luggage

- rear 743 kg >

Updated 9th June 2010

Page 3

Lotus Service Notes Section TDQ

Trailer towing Not permissible

CAPACITIES Engine oil - refill inc. filter - 2ZZ/1ZZ 4.4 litre (+ 3.5 litre if front mounted oil coolers are drained)

- 1ZR 4.8 litre High/low dipstick mark difference - 2ZZ/1ZZ 1.5 litre

- 1ZR 1.0 litre Transmission oil - 2ZZ 2.3 litre

- 1ZZ 1.9 litre

- 1ZR 2.4 litre Fuel tank 43.5 litre Coolant 12 litre Refrigerant (R134a) 550 g Rear luggage compartment 50 kg/112 litre

WHEELS & TYRES

Tyres

Type - Elise std. - prior '06 Bridgestone Potenza RE040

- from '06 Yokohama Advan Neova AD07

- USA Elise Yokohama Advan Neova AD07

- Elise option, Exige Yokohama A048 Size - front - Elise std. 175/55 R16 80W

- USA Elise 175/55 R16 80W

- Elise option, Exige 195/50 R16 84W

- rear - Elise std. - RE040 225/45 R17 90W

- AD07 225/45 R17 91W

- USA Elise - AD07 225/45 R17 91W

- Elise opt. Exige - A048 225/45 R17 90W Pressure (cold) - front 1.8 bar (26 lb/in²)

- rear 2.0 bar (29 lb/in²)

Winter Tyres

Type - front Pirelli 210 Snowsport

- rear Pirelli 240 Snowsport Size - front 195/50 R16

- rear 215/45 R17 Pressure (cold) - front 1.8 bar (26 lb/in²)

- rear 1.9 bar (27.5 lb/in²) Tyre studding Not permitted Tyre chains Pewag Brenta-C XMR69 fitted only on rear winter tyres

Wheels

Type - Elise 111R/R/USA Cast alloy, 8 spoke

- Elise S Cast alloy, 6 spoke

- Elise 2011 Cast alloy, 12 spoke

- Exige std. Cast alloy, 8 Y-spoke

- Elise/Exige option Forged alloy, 7 split-spoke

- Elise 2011 option Forged alloy, 5 Y-spoke Size - front - Elise std. 5.5J x 16

- Elise option 6.0J x 16 (forged + AD07)

- Elise option, Exige 6.5J x 16 (forged + A048)

- rear 7.5J x 17 Wheel bolt torque 105 Nm (77 lbf.ft)

Lotus Service Notes Section TDQ

Page 4

FRONT SUSPENSION Type Independent. Upper and lower wishbone; co-axial coil spring/telescopic damper unit; anti-roll bar Steering axis inclination 12 ° nominal

Geometry specication - Standard Elise:

Mid-laden ride height (reference height for geometry check)

- USA Elise from VIN 3013 & 111R/R/S - front 130 mm below front end of chassis siderail

- rear 130 mm below rear end of chassis siderail

- USA Elise prior VIN 3013 - front 135 mm below front end of chassis siderail

- rear 135 mm below rear end of chassis siderail Castor - optimum + 3.8°

- tolerance range + 3.5° to + 4.1°; max. side/side 0.35° Camber - optimum - 0.1°

- tolerance range + 0.1° to - 0.3°; max. side/side 0.2° Alignment - optimum Zero

- tolerance range 0.5 mm toe out, to 0.7mm toe-in overall

Geometry specication - Elise option, Exige:

Mid-laden ride height (reference height for geometry check)

- front 130 mm below front end of chassis siderail

- rear 130 mm below rear end of chassis siderail Castor - optimum + 3.8°

- tolerance range + 3.5° to + 4.1°; max. side/side 0.35° Camber - optimum - 0.3°

- tolerance range - 0.1° to - 0.5°; max. side/side 0.2° Alignment - optimum Zero

- tolerance range 0.5 mm toe out, to 0.5 mm toe-in overall

Geometry specication - Elise option, Exige:

Mid-laden ride height (reference height for geometry check)

- front 120 mm below front end of chassis siderail

- rear 120 mm below rear end of chassis siderail Castor - optimum + 3.8°

- tolerance range + 3.5° to + 4.1°; max. side/side 0.35° Camber - optimum - 0.2°

- tolerance range + 0.1° to - 0.3°; max. side/side 0.2° Alignment - optimum Zero

- tolerance range 0.5 mm toe out, to 0.7 mm toe-in overall

REAR SUSPENSION Type Independent. Upper and lower wishbone; co-axial coil spring/telescopic damper.

Geometry specication - Standard Elise:

Mid-laden ride height (reference height for geometry check)

- USA Elise from VIN 3013 & 111R/R/S - front 130 mm below front end of chassis siderail

- rear 130 mm below rear end of chassis siderail

- USA Elise prior VIN 3013 - front 135 mm below front end of chassis siderail

- rear 135 mm below rear end of chassis siderail Camber - optimum - 1.8°

- tolerance range - 1.6° to - 2.0°; max.side/side 0.2° Alignment - optimum 1.2 mm toe-in each side

- tolerance range 1.2 to 1.8mm toe-in each side max.side/side 0.3 mm

Page 5

Lotus Service Notes Section TDQ

Geometry specication - Elise option, Exige:

Mid-laden ride height (reference height for geometry check)

- front 130 mm below front end of chassis siderail

- rear 130 mm below rear end of chassis siderail Camber - optimum - 1.8°

- tolerance range - 1.6° to - 2.0°; max.side/side 0.2° Alignment - optimum 1.5 mm toe-in each side

- tolerance range 1.2 to 1.8 mm toe-in each side max.side/side 0.3 mm

Geometry specication - Elise option, Exige:

Mid-laden ride height (reference height for geometry check)

- front 120 mm below front end of chassis siderail

- rear 120 mm below rear end of chassis siderail Camber - optimum - 2.5°

- tolerance range - 2.0° to - 2.7°; max.side/side 0.2° Alignment - optimum 1.8 mm toe-in each side

- tolerance range 1.5 to 2.0 mm toe-in each side max.side/side 0.3 mm

ELECTRICAL

Light Bulbs Wattage Type

Headlamps - prior '07 - main beam 55 H7

- dip beam 55 H1

- from '07 - main beam 55 H7U

- dip beam 55 H7U 2011 Elise - main beam 65 H9B

- dip beam 60 HB3A Driving lamps 55 H3 Front side/parking lamps - except '11 Elise 5 W5W

- 2011 Elise - 5 x LED Side repeater lamps - except '11 Elise 5 WY5W amber

- 2011 Elise - LED Front turn indicators - except '11 Elise 21 PY21w amber

- 2011 Elise - 11 x LED Rear turn indicators - prior '06 21 H21

- from '06 16 W16W capless Stop/Tail lamps - prior '06 4/21 P21/4w

- from '06 - 20 x LED Stop lamps (USA) - prior '06 21 H21

- from '06 - 20 x LED Tail lamps - prior '06 5 R5W

- from '06 - 20 x LED Tail/turn lamps (USA) - prior '06 4/21 P21/4w Rear fog lamps - except '11 Elise 4/21 P21/4w

- 2011 Elise - 10 x LED Reversing lamp - prior '06 21 H21

- from '06 16 W16W capless High mounted stop lamp - Elise 2.5 16 x LED

- Exige 5 W5W capless Licence plate lamps 5 C5W Interior lamp 5 W5W

System voltage/polarity 12V negative earth Alternator 85A

- 1ZR FAE 100A

Lotus Service Notes Section TDQ

Page 6

Battery - non USA - type Varta Blue Dynamic 544 402 044 3132

- short code B18

- capacity 44 Ah

- cold test current 440 A (EN)

- dimensions L 207, W 175, H 175mm

- USA - type Delco 19001 598

- BCI code 26R-6YR

- cranking power 550 amps @ -18°C

- reserve capacity 80 minutes

TRANSMISSION Gearbox - all except Elise S 6-speed manual transaxle incl. final drive

- Elise S 5-speed manual transaxle incl. final drive Differential - standard Open, bevel gear

- option Torsen or plate type LSD combined with with Lotus Traction Control engine progamming Transmission designation - expt Elise S & '11 Elise C64

- Elise S C56

- 2011 Elise EC60

Gear Ratio mph (km/h)/1000 rpm

C64 C56 EC60 C64 C56 EC60

First 3.17 3.17 3.54 5.1 (8.2) 5.36 (8.62) 4.75 (7.64)

Second 2.05 1.90 1.91 7.7 (12.4) 8.73 (14.1) 8.79 (14.1)

Third 1.48 1.39 1.31 10.7 (17.2) 12.0 (19.2) 12.8 (20.6)

Fourth 1.17 1.03 0.97 13.6 (21.8) 16.2 (26.0) 17.3 (27.9)

Fifth 0.92 0.82 0.82 17.3 (27.8) 20.4 (32.8) 20.6 (33.1)

Sixth 0.81 - 0.70 19.4 (31.3) - 24.0 (38.6)

Reverse 3.25 3.25 3.33

Final Drive 4.53 4.31 4.29

CLUTCH Type Single dry plate. Diaphragm spring cover. Hydraulic release. Friction plate diameter - 2ZZ/1ZZ 215 mm

- 1ZR FAE 212 mm Diaphragm finger clearance - 2ZZ/1ZZ 1.00 mm Max. finger wear - 1ZR FAE - depth 0.5 mm

- width 6.0 mm

Diaphragm finger height - 2ZZ/1ZZ - new 37.5 - 32.1 mm

- service limit 42.75 mm Max. finger tip non-alignment - 1ZR FAE 0.5 mm

Friction plate thickness 2ZZ/1ZZ - new 7.4 - 6.9 mm

- service limit 5.6 mm Rivet depth 2ZZ/1ZZ - new 1.0 mm

- service limit 0.2 mm 1ZR FAE - service limit 0.3 mm

Friction plate run-out 2ZZ/1ZZ - new 0.8 mm

- service limit 1.0 mm 1ZR FAE - service limit 0.8 mm Pressure plate warp 2ZZ/1ZZ - service limit 0.15 mm

Lotus Service Notes Section TDQ

Page 7

BRAKES Brake discs Cast iron, curved vane ventilated, cross-drilled discs on all four wheels. Calipers - front A.P. Racing, aluminium alloy body, one pair of opposed pistons

- rear Brembo, cast iron, single piston sliding rear calipers Disc size - front & rear 288 mm Operation Tandem master cylinder with vacuum servo and Kelsey Hayes EBC430 Anti-lock system Parking brake Cable operation of rear calipers, self adjusting for pad wear.

STEERING Type Rack and pinion Turns, lock to lock 2.8 Gear ratio 15.8:1 Rack height plate 6 notch Turning circle - between walls (excl. mirrors) 10 m

- between kerbs 10.8 m

FUEL CONSUMPTION 1ZZ-FE 2ZZ-GE 1ZR FAE 1999/100/EC - urban - prior 2010 11.3 l/100km - -

- Elise R, Exige - 12.1 l/100km -

- - Elise SC - 11.6 l/100km -

- Exige S - 12.3 l/100 km -

- from 2010 10.6 l/100km - -

- Elise R - 11.6 l/100km -

- - Elise SC - 11.8 l/100km -

- Exige S - 11.9 l/100 km -

- - 8.3 l/100km

- extra urban - prior 2010 6.5 l/100km - -

- Elise R, Exige - 6.8 l/100km -

- Elise SC - 6.7 l/100km -

- Exige S - 9.1 l/100 km -

- from 2010 5.8 l/100km

- Elise R - 6.2 l/100km -

- Elise SC - 6.4 l/100km -

- Exige S - 6.5 l/100km -

- - 5.0 l/100km

- combined - prior 2010 8.3 l/100km - -

- Elise R, Exige - 8.8 l/100km -

- Elise SC - 8.5 l/100km -

- Exige S - 9.1 l/100km -

- from 2010 7.6 l/100km - -

- Elise R - 8.2 l/100km -

- Elise SC - 8.5 l/100km -

- Exige S - 8.5 l/100km -

- - 6.28 l/100km

Page 1

Lotus Service Notes Section AH

CHASSIS

SECTION AH

Sub-Section Page

General Description AH.1 3

Chassis Straightness Check AH.2 4

Rear Subframe AH.3 5

Page 2

Lotus Service Notes Section AH

ELISE CHASSIS UNIT

Seat belt mounting

frame steel roof hoop

Composite Scuttle Seat mounting

crash structure beam extrusion Seat belt mounting

frame backstay

Door hinge

mounting

Sill extrustion

Main siderail

Fuel tank bay Steel rear subframe

a29b

Page 3

Lotus Service Notes Section AH

AH.1 - GENERAL DESCRIPTION

The chassis frame of the Lotus Elise is constructed primarily from aluminium alloy extrusions and formed alloy sheet, with the various sections bonded together using an epoxy adhesive with secondary drive-in fasteners. The basic chassis unit includes the passenger cell, front suspension mountings, fuel tank housing, and mid mounted engine bay, with a fabricated sheet steel rear subframe bolting to the rear of the engine bay to provide rear suspension mountings and rear body support. A tubular steel seat belt mounting frame is bolted to the top of the chassis structure and incorporates a roof hoop for additional occupant protection. The cabin rear bulkhead, body sills (inc. 'B' posts), front energy absorbing crash structure and scuttle/windscreen mounting frame, are all constructed from glass fibre composite and are bonded to the chassis structure using an elastomeric adhesive. The front and rear outer body clamshells are each constructed from glass fibre composite mouldings, fixed to the body and chassis structure with threaded fasteners to facilitate service access and economic repair.

Two main chassis siderail extrusions, 210mm deep and 100mm wide, run along each side of the passenger compartment between the front and rear suspension mountings, splaying outwards towards the rear before curving inwards around the fuel tank bay and terminating at each side of the engine bay in a vertical section to provide engine mounting platforms and a flange to which the rear subframe is attached. To enhance cockpit access, the height of the siderails is reduced in the door area, and internal reinforcement added in order to maintain beam strength and torsional rigidity.

Running along the underside of the siderails from the front suspension crossmember to the fuel tank bay are sill extrusions which carry the cockpit floor panel. The single skin floor panel is swaged for stiffness, and is reinforced by a ribbed transverse extrusion running across the inside of the tub, which also provides for the seat mountings. Behind the passenger cell, the siderails are linked by a pair of transverse crossmembers which are used in conjunction with a folded sheet upper panel to form an open bottomed fuel tank cell with a detachable, screw fixed, closing panel with swaged lightening holes. Note that this lower panel contributes to the structural integrity of the chassis, such that the vehicle should not be operated without it fitted.

The rear ends of the siderails are joined behind the engine bay by a galvanised sheet steel fabricated subframe which provides mountings for the rear suspension pivots nad damper abutment, engine rear stabiliser and exhaust muffler.

At the front of the passenger compartment, four transverse extrusion beams are used to provide mountings for the front suspension pivots, and house the steering rack, with an upright section used each side to anchor the top of the spring/damper unit. Five interlinked extruded floor sections together with additional extrusions, connect the transverse beams to form an open topped space to house the heater/a.c. unit. An extruded scuttle beam links the tops of the siderails at the front of the cockpit, and is reinforced by a panel extending to the steering rack crossmember. These elements are used to mount the steering column and pedal box, with a vertical extrusion fixed to each end of the scuttle beam to carry the door hinge pillar.

To the front end of the chassis is bonded a glass fibre composite 'crash structure' which incorporates tubular sections designed to dissipate collision energy and control the rate of deceleration sustained by the occupants. Ducting and mountings for the horizontally positioned engine cooling radiator are also incorporated in this structure.

The bonded and rivetted alloy chassis structure described above is considered a non-serviceable single unit, jig built to fine tolerances, to which no structural repairs are approved. Superficial, cosmetic, or non-structural localised damage may be cosmetically repaired as necessary, but in the case of accident damage resulting in significant bending, tearing or distortion of the aluminium chassis, such that the specified suspension geometry cannot be achieved by the standard range of suspension adjustment provided, the recommended repair is to renew the partial body assembly, which comprises the chassis, rear subframe and the seat belt mounting frame together with jig bonded composite rear bulkhead, body sills, windscreen frame and crash structure. Also included are the radiator feed and return pipes in the chassis siderails, and those pipes and cables routed through the sills, including the heater and a.c. pipes, battery cable, clutch and brake pipes, and brake servo and oil cooler hoses.

Page 4

Lotus Service Notes Section AH

AH.2 - CHASSIS STRAIGHTNESS CHECK

In the absence of visual damage, the chassis may be checked for twist or distortion by utilising the tooling holes in the underside of the main side rails. If computer processed laser measuring equipment is not available, manual checks can be made with reference to an accurately level ground plane, e.g. an accurately set and maintained suspension geometry ramp/lift. Position the car on the lift, and proceed as follows:

1. Identify the tooling holes in the lower surface of each chassis main side rail. At the front end, between the

suspension wishbone pivots, and at the extreme rear end of each rail.

2. Measure the height of each tooling hole above the reference plane and use jacks to adjust the height of

the chassis in order to equalise any three of these dimensions.

3. Measure the deviation of the fourth dimension from the other three. Maximum service deviation = ± 2.0 mm.

4. Repeat operations (2) and (3) for each combination of corners to result in four values for the 'fourth' dimen-

sion deviation. If any one of these exceeds the service specification, the chassis should be considered

damaged and replaced by a partial body assembly.

FRONT REAR

Tooling hole

Front wishbone Rear wishbone

a27/27a

Page 5

Lotus Service Notes Section AH

AH.3 - REAR SUBFRAME

The rear ends of the chassis siderails are linked by a fabricated sheet steel subframe which provides mountings for the rear body section, rear suspension pivots, engine rear stabiliser, exhaust muffler and seat belt mounting frame struts. The subframe is secured to the siderails by two M12 bolts at each side, with an anti-corrosion shim plate interposed.

To remove rear subframe

1. Remove the rear clamshell (see section BR).

2. Remove exhaust heatshields, catalytic converter and muffler.

3. Disconnect the parking brake cables, wheel speed sensor harnesses and rear brake hydraulics. Release

the driveshafts from the hubs, and remove both rear suspension assemblies complete, providing alterna-

tive support for the driveshafts.

4. Disconnect the inertia switch, and release from the subframe the oxygen sensor harness, wheel speed

sensor harnesses and brake pipes.

5. Release the engine rear stabiliser mounting from either the subframe or transmission.

6. Release the roof hoop backstays from the subframe. Remove the two bolts each side securing the subframe

to the chassis flange and withdraw the subframe from the car.

Fitting rear subframe When bolting the subframe at each side to the chassis rail rear flange, ensure that the anti-corrosion shim plate is interposed. The lower fixing bolts should be inserted from the rear, using a washer and Nyloc nut inside the chassis extrusion. Apply Permabond A130 (A912E7033V) to the threads of the upper bolts before fitting from the front into the weldnuts in the subframe. Tighten all four bolts to 86 Nm. Continue re-assembly in reverse order to disassembly.

Seat belt mounting frame backstay Backstay to subrame

                         xingbolt

Subframe upper mounting bolt Rear subframe

Chassis

a30

Anti-corrosion shimplate Subframe lower mounting bolt

Page 1

Lotus Service Notes Section BQ

BODYCARE & REPAIR

SECTION BQ

Sub-Section Page

General Description BQ.1 3

Lotus Composite Body Features BQ.2 3

Bodycare BQ.3 4

Accident Damage Assessment BQ.4 5

Body Panel Bonding Materials BQ.5 6

Replacement of Bonded-On Panels - General BQ.6 9

Front Crash Structure BQ.7 10

Windscreen Frame BQ.8 12

Sill Panels BQ.9 16

Rear Bulkhead BQ.10 17

Page 2

Lotus Service Notes Section BQ

Body Panels

Door shell Windscreen Sill panel Front access frame panel Rear window shroud Engine cover lid

Front clamshell

Cabin rear Door hinge bulkhead cover panel

Rear clamshell

Front crash structure Chassis frame

b277b

Page 3

Lotus Service Notes Section BQ

BQ.1 - GENERAL DESCRIPTION

The body panels of the Lotus Elise are constructed of composite materials, with the external panels not being required to contribute to chassis rigidity. The panels are attached to the aluminium chassis and/or other body panels either by elastomeric polyurethane adhesive, or in the case of the front and rear clamshells, are bolted on for ease of dis-assembly and access to chassis parts. The composite mouldings are manufactured by one of several processes (see later) dependent on application, with a nominal thickness of 2.2 - 2.5 mm. The windscreen frame incorporates foam beams to create closed box sections for optimum strength and a ‘crash structure’ bonded to the front of the chassis incorporates longitudinal box sections to provide specific crush characteristics and absorb crash impact by progressive collapse. This structure also acts as a mounting and duct for the engine cooling radiator which is mounted horizontally on its top surface.

BQ.2 - LOTUS COMPOSITE BODY FEATURES

Composite structures have the ability to absorb high impact loads by progressive collapse, with impact damage being localised. In vehicle accidents this feature protects the occupants from injurious shock loads and greatly reduces the danger of entrapment by deformation of steel body panels. This behaviour also facilitates repair by either replacing the damaged bonded or bolt on panels, and/or integrating a replacement section with the undamaged area, using recognised approved methods which restore the panel to its original condition without residual strain or distortion.

The manufacturing process enables the thickness of composite mouldings to be varied in order to pro vide efficient structures of high strength and low weight. Composites will not corrode, so the strength of composite components is retained regardless of age, unless physical damage is sustained. On the Elise, the body construction features an assembly of mouldings to form a single piece for the whole of the nose and front wings, and a similar assembly for the whole of the rear body aft of the doors. These two 'clamshells' are fixed using threaded fasteners to permit easy removal for access to chassis or powertrain components, or to allow simple and economic accident repair. Other composite mouldings include the door shells, sills, front compartment lid, windscreen frame and rear bulkhead, some panels being bonded to the aluminium alloy chassis with an elastomeric adhesive.

A composite panel may return to its original shape after deflection, but beyond a certain level of flexibility, such treatment may result in the formation of surface cracks which may not be immediately apparent due to the masking effect of the paint film. A steel panel similarly treated would become dented or deformed. The cracking may be confined to the surface layer with no reduction in panel strength, but if the damage is more severe the composite structure below the surface may be weakened. Localised repairs can be made in either case. Possible causes of surface cracking include:

- Vehicle collision;

- Sitting, leaning heavily or pushing on the body or any composite panel;

- Knocking doors against obstructions when opening;

- Dropping objects onto a panel;

- Allowing unrestrained items to roll about in a luggage compartment;

- Fitting a front access panel or closing the engine cover onto projecting objects, e.g. luggage or tools;

- Applying excessive force to parts attached to composite panels e.g. mirrors, locks, aerial etc. (inc. action

byvandals).

- Incorrect jacking.

The composite body panels of the Elise are manufactured by one of several processes dependent on the requirements of the panel concerned:

- The front and rear clamshells, sill panels, windscreen frame, door outer panels, hard top roof outer panel

and front crash structure are produced by Injection Compression System Resin Transfer Moulding (ICS-

RTM), whereby a mix of polyester resin and glass fibres is injected into a heated, chrome steel surfaced,

closed mould. After filling, the gap between the two halves of the mould is then reduced in order to com-

press the moulding and ensure complete material flow and consistent structural quality. Panel thickness

is a nominal 2.2 mm. The absence of the 'gel coat' used with other processes results in much greater

resistance to surface damage, and minimum surface preparation for before painting.

Page 4

Lotus Service Notes Section BQ

- The front access panels, engine cover lid, door hinge panels, door and roof inners and rear window shroud

are produced from Low Pressure Sheet Moulding Compound (LPSMC), whereby flat sheets of composite

material are formed using heated, chrome steel surfaced moulds to produce panels with a nominal thick-

ness of 2.5 mm.

- A third process is used for the cabin rear bulkhead, bootbox and radiator mounting panel where the panel

surface is not primarily visible. These panels are produced by a Polyurethane Structural Reaction Injec-

tion Moulding (PU SRIM) process.

- Body panels unique to the Exige model, including front and rear clamshells, door hinge cover panels and

tailgate panel, are 'hand lay' composite mouldings with a nominal thickness of 2.5 mm.

Whichever production process applies, conventional composite repair techniques can be used to rectify structural or surface damage whenever repairs can be determined as being more economic than panel replacement.

BQ.3 - BODYCARE

The acrylic enamel paint finish of the Elise is extremely resistant to all normal forms of atmospheric attack. Following the simple maintenance procedure summarised below will help retain the gloss, colour and protective properties of the paint throughout the life of the vehicle. However, car finishes are not immune to damage, and amongst the more common causes of deterioration are:

- Atmospheric contaminants; dust, soot, ash, and acidic or alkaline aerosol mist can chemically attack

paint.

- Abrasion; blowing sand and dust, or a dirty washing cloth.

- Tree sap and insect fluids; can form a water-insoluble polymer that adheres to the paint.

- Bird excrement; highly acidic or alkaline, they can chemically etch the paint. Wash off immediately.

- Leaves; contain tannic acid which can stain light finishes.

- Impact damage; granite chippings thrown up from poor or recently dressed road surfaces can subject the

body to severe localised impact, and result in paint chips, especially around the vulnerable frontal panels.

Do not follow other vehicles too closely in such circumstances.

Washing

Lotus recommends that the car be hand washed, using the following instructions:

Many contaminants are water soluble and can be removed before any harm occurs by thorough washing with plenty of lukewarm water, together with a proprietary car wash additive (household detergent and washing up liquid can contain corrosive salts, and will remove wax and accelerate oxidation). Frequent washing is the best safeguard against both seen and invisible contaminants. Wash in the shade, and use a cotton chenille wash mitt or a sponge rinsed frequently to minimise entrapment of dirt particles. Use a straight back and forth washing motion to avoid swirled micro scratches, and rinse thoroughly.

In order to minimise degradation from road salt, the underside of the chassis should be rinsed with clean water as soon as possible after driving on treated roads. Many fuel filling stations offer pressure washing facilities ideal for this purpose, but to not use on the painted bodywork or soft top roof.

Soft Top Roof:

1. Careful vacuuming of the soft top before washing may be helpful in removing excess dust and other foreign

particles.

2. Wash in partial shade rather than strong sunlight, and wet the whole car before tackling the soft top.

3. Using only clean lukewarm water and a sponge (a chamois or cloth will leave lint, and a brush may abrade

the threads) wash the entire top uniformly. Do NOT use a detergent, which may affect the waterproofing

properties of the material.

4. Rinse the whole car to remove all soap from the fabric and to prevent streaking on the car bodywork.

5. Remove surface water with a sponge and allow to air dry in direct sunlight. Ensure that the roof is fully dry

before stowing, as prolonged stowage of a wet or damp roof will promote rotting of the fabric.

Keeping the soft top clean by regular washing will enhance the life and maintain the appearance of the roof, and facilitate subsequent cleaning. The use of stronger cleansers should be left to professionals experi-

Page 5

Lotus Service Notes Section BQ

enced in handling this type of fabric as discoloration and degradation of the special protective inner layer may result. The application of wax finishes, dressings or preservatives will cause stains which are difficult to remove and therefore should be avoided.

Paintwork Polishing

Eventually some loss of gloss, and an accumulation of traffic film, will occur. At this stage, after normal washing, the application of a good quality liquid polish will restore the original lustre of the paint film. Higher gloss of the paint finish, and added protection against contamination, can be obtained by the use of a wax polish; however, this can only be used successfully on a clean surface, from which the previous application has been removed with white spirit or a liquid polish cleaner.

Ventilation

Water lying on the paint surface for a lengthy period will eventually penetrate the paint film. Although the effects will not be visible immediately, a deterioration in the protective properties of the paint film will ultimately result. It is not recommended to store a wet car in a poorly ventilated garage. If good ventilation cannot be provided, storage outside on a hard standing or under a carport is to be preferred.

BQ.4 - ACCIDENT DAMAGE ASSESSMENT

The repair method to be employed in the rectification of accident damage to composite panels, is to be assessed reletive to the particular panel and its method of attachment:

Bolt-on Panels: - Front Clamshell;

- Rear Clamshell;

- Door Shells;

- Front Body Access Panels;

- Engine Cover Lid;

- Door Hinge Cover Panels;

- Rear Window Shroud;

- Hard Top Roof.

These panels are secured by threaded fasteners and are easily removed for access to the back of any damaged area for repair by conventional composite techniques. Instructions for the removal and refitment of these panels are contained in section BR.

Bonded-on Panels: - Windscreen Frame;

- LH & RH Sill Panels;

- Front Crash Structure;

- Rear Bulkhead

These panels are bonded to the chassis or to other panels using a flexible polyurethane adhesive which must be cut before the panel may be removed. In some cases, it may be necessary to partially remove another panel before the subject panel can be released. It is not generally economic to attempt to remove a bonded panel intact for later re-fitment.

The integrity of the front crash structure is crucial to the safety of the car in a frontal collision, and it is recommended not to attempt any major repair of this component. The damaged structure should be cut from the front of the chassis, and a new assembly bonded into position. The shape and positioning of the windscreen frame is crucial to the fit of the windscreen and sealing of the soft top roof, such that the only repairs which should be considered for this panel are cosmetic and superficial; any structural damage should entail panel replacement.

The sill panels include the ‘A’ and ‘B’ posts, and involve much labour time to replace. Localised repairs should be performed whenever possible, although access to the inside surface of some parts of the panels is not freely available.

Note that if damage is such as to require replacement of the chassis, replacement chassis assemblies are provided only as a 'partial body assembly' which includes jig bonded front crash structure, windscreen frame, side sills and rear bulkhead. The roof hoop and rear subframe are also included, as are the pipes, hoses and cables routed through the sills.

Page 6

Lotus Service Notes Section BQ

BQ.5 - BODY PANEL BONDING MATERIALS

The materials used for bonding the body panels are manufactured by Dow Chemical, and in order to main tain the structural integrity of the vehicle, and in the case of the front crash structure, the safety, it is most important to use only the specified materials. The surface preparation and cleaning and priming operations are crucial to the performance of the adhesive, and must be followed in detail. The products to be used depend on the surface (substrate) onto which they are applied, and the following list identifies each application:

Anodised aluminium (e.g. chassis and components) Cleaner: Betawipe VP 04604 Lotus part no. A082B6150V Primer: Betapnme 5404 Lotus part no. A082B6337V Adhesive: Betaseal 1701 Lotus part no. A082B6281F or Betamate E2400 Lotus part no. A082B8415V

Unpainted or painted composite Cleaner: Betaclean 3900 Lotus part no. A100B6008V Primer: Betaprime 5404 Lotus part no. A082B6337V Adhesive: Betaseal 1701 Lotus part no. A082B6281F or Betamate E2400 Lotus part no. A082B8415V

Zinc plated and passivated steel Cleaner: Beatclean 3900 Lotus part no. A100B6008V Primer: Betaprime VP 01706 A+B Lotus part no. A100B6070V Adhesive: Betaseal 1701 Lotus part no. A082B6281F

Glass Cleaner: Betawipe VP 04604 Lotus part no. A082B6150V Primer: Betaprime 5001 Lotus part no. A100B6009V Adhesive: Betaseal 1701 Lotus part no. A082B6281F or Betamate E2400 Lotus part no. A082B8415V

Uncoated Lexan/Perspex Cleaner: Abrasion & dry wipe Primer: Betapnme 5404 Lotus part no. A082B6337V Adhesive: Betaseal 1701 Lotus part no. A082B6281F or Betamate E2400 Lotus part no. A082B8415V

Residual adhesive (i.e. rebonding to surface after cutting off old panel) Cleaner, primer & re-activator: Betawipe 4000 Lotus part no. A082B6355V Adhesive: Betaseal 1701 Lotus part no. A082B6281 F or Betamate E2400 Lotus part no. A082B8415V

Applicator Bottle

An applicator bottle is available for use with some cleaners and primers, and has a disposable felt pad which should be changed regularly to minimise surface contamination:

Applicator bottle: A000Z1071F

Cap: A082B6353S

Felt pad: A082B6354S

Product Usage

BETAWIPE VP 04604 (A082B6150V): Description: Activator and cleaning agent used to promote adhesion to the substrate surface. Supplied in

a 250ml aluminium container with a YELLOW coloured cap.

Application: - Wipe on/wipe off type.

- Pour Betawipe VP 04604 into applicator bottle, and immediately refit the yellow cap onto the

container.

Page 7

Lotus Service Notes Section BQ

- Push the applicator head onto the bottle, and fit the felt pad.

- Wet out the felt pan by inverting the applicator bottle and gently squeezing the sides.

- Wipe the pad over the substrate surface using minimal pressure to wet the surface.

- Immediately wipe off the activated/cleaned surface using a clean fibre free cloth, and dis-

card.

Notes: - If the substrate is very dirty, first wipe off the surface with a clean fibre free cloth and dis-

card.

- Do not leave the caps off Betawipe containers. A milky colour indicates moisture absorption,

and the material should be discarded.

- Only decant a sufficient quantity of Betawipe for the job concerned, and never pour material

back into the container from the applicator bottle.

- Change the felt pad at regular intervals to reduce surface contamination.

BETACLEAN 3900 (A100B6008V) Description: Degreaser and cleaning agent used for the removal of contamination from the substrate surface.

Supplied in 1 litre aluminium container with a BLACK coloured cap.

Application: - Wipe on/wipe off type.

- When substrate is very dirty, first wipe off the surface with a clean fibre-free cloth and dis-

card.

- Dampen a fibre-free cloth with Betaclean 3900, and immediately replace the black cap.

- Thoroughly clean the substrate surface with Betaclean and discard the cloth.

- Wipe off the substrate with a clean fibre-free cloth and discard.

BETAWIPE 4000 (A082B6355V) Description: Cleaning agent which acitvates the old adhesive layer to accept new adhesive. Supplied in 250

ml aluminium containers with a BLUE cap.

Application: - The residual adhesive bead should be cut with a scalpal to leave an even thickness of ap-

proximately 1 to 2 mm.

- Dampen a fibre-free cloth with Betawipe 4000 and immediately replace the blue cap.

- Thoroughly clean the substrate surface with Betawipe and discard the cloth. Do not wipe

off.

- Allow 2 - 3 minutes flash off time before applying adhesive.

BETAPRIME 5001 (A100B6009V) Description: Adhesion promotor used to maximise the performance of the bonding between the cleaned

and/or activated surface and the adhesive compound. Supplied in 250 ml aluminium con tainer with GREEN coloured cap.

Application: - Two steel balls inside the container are provided to assist mixing of the contents when shaken.

Prior to decanting Betaprime 5001, shake the container for at least 60 seconds to disperse the solid content of the material into suspension.

- Pour the primer into the applicator bottle and immediately replace the green cap.

- Wet out the felt pan by inverting the applicator bottle and gently squeezing the sides.

- Wipe the pad over the activated/cleaned substrate surface to apply a continuous film of

primer.

- Allow to dry for a minimum of 15 minutes before applying adhesive. If adhesive is not applied

with 72 hours, wipe on/wipe off with Betawipe VP 04604.

Notes: - The appearance of the primed areas should be deep black in colour with no streaks or

voids.

To achieve this appearance, apply in smooth continuous uni-directional movement, not short

backward and forward movements. The latter technique results in inconsistent film build.

Rework any poor areas after 5 minutes (tack time), applying in the same direction.

- Replace the felt pad if moisture absorption results in hardening.

- Never return unused Betaprime back into the aluminium container.

Page 8

Lotus Service Notes Section BQ

BETAPRIME 5404 (A082B6337V) Description: Adhesion promotor used to maximise the performance of the bonding between the cleaned

and/or activated surface and the adhesive compound. Supplied in 250 ml aluminium con tainer with RED coloured cap.

Application: - Two steel balls inside the container are provided to assist mixing of the contents when shaken.

Prior to decanting Betaprime 5404, shake the container for at least 60 seconds to disperse the solid content of the material into suspension.

- Pour the primer into the applicator bottle and immediately replace the green cap.

- Wet out the felt pan by inverting the applicator bottle and gently squeezing the sides.

- Wipe the pad over the activated/cleaned substrate surface to apply a continuous film of

primer.

- Allow to dry for a minimum of 15 minutes before applying adhesive. If adhesive is not applied

with 24 hours, re-activate by applying a further coat of Betaprime 5404.

Notes: - The appearance of the primed areas should be deep black in colour with no streaks or

voids.

To achieve this appearance, apply in smooth continuous uni-directional movement, not short

backward and forward movements. The latter technique results in inconsistent film build.

Rework any poor areas after 5 minutes (tack time), applying in the same direction.

- Replace the felt pad if moisture absorption results in hardening.

- Never return unused Betaprime back into the aluminium container.

BETAPRIME VP 01706 A+B (A100B6070V) Description: Adhesion promotor used to maximise the performance of the bonding between the cleaned

and/or activated surface and the adhesive compound. Supplied in 250 ml aluminium con tainers of component A and component B.

Application: - Thoroughly shake component A container to disperse solid material. Remove the lid from the

component A container and scrape any sediment from the botton of the container. Re place the container lid and thoroughly shake again to disperse the solid content.

- Pour the required amount of component A into a clean container, and add the same volume

of component B. Replace lids immediately. Thoroughly mix the two components for 45 seconds minimum.

- Leave the mixed components to stand for 30 MINUTES. (Discard if unused after 8 hours)

- Pour the pnmer into the applicator bottle and wet out the felt pan by inverting the bottle and

gently squeezing the sides.

- Wipe the pad over the cleaned substrate surface to apply a continuous THIN film of primer: A thin, almost transparent film is all that is required. No attempt should be made to attain a

completely opaque covering.

- Allow to dry for a minimum of 4 HOURS, before applying adhesive. Notes: - To achieve a continuous thin film of VP 01706, apply in a smooth continuous uni-directional

movement, not short backward and forward movements. The latter technique results in inconsistent film build.

- Replace the felt pad if moisture absorption results in hardening.

- Never return unused Betaprime back into the aluminium container.

BETASEAL 1701 (A082B6281F) Description: One component moisture curing adhesive, providing high strength, permanently elastic bonds

between various substrates. Supplied in 300 ml aluminium cartridge.

Application: - Remove the cartridge end ensuring there is no damage to the reinforcing sleeve.

- Pierce the neck of the cartridge and screw on the applicator nozzle. Cut the nozzle end to the

required diameter and shape.

- Fit the cartridge into an air assisted gun, and extrude a smooth, even and continuous bead

of Betaseal to the previously prepared substrate.

- Assemble the joint within 5 MINUTES. Notes: - If the adhesive has to be touched or manipulated for any reason, use only wetted fingers.

Page 9

Lotus Service Notes Section BQ

BETAMATE E2400 (A082B8415V - 220ml, A100B6258V - 450ml) Description: Two component chemically curing adhesive, providing high strength, permanently elastic bonds

between various substrates. Supplied in 220 and 450 ml aluminium cartridges.

Application: - An electrically driven Betagun Mk 11 is required to mix and extrude Betamate E2400. Refer

to the operating instructions supplied with the gun.

- Extrude a smooth, even and continuous bead of Betamate to the previously prepared sub-

strate.

- Assemble the joint within 5 MINUTES. Notes: - If the adhesive has to be touched or manipulated for any reason, use only wetted fingers.

BQ.6 - REPLACEMENT OF BONDED-ON PANELS - GENERAL

Bonded body panels are secured using the Dow Chemical products ‘Betaseal’ or ‘Betamate’, which are flexible polyurethane adhesives which must be cut in order for a panel to be removed. The recommended method of adhesive cutting is with the use of a pneumatic tool such as the Chicago Pneumatic CP838 Pneu Nife which uses a range of differently shaped cutting knives to which is imparted a vibrating action. This tool may also be used to remove windscreens.

Supplier: Chicago Pneumatic, Utica, New York 13501, USA.

Catalogue no.: CP838 Pneu-Nife

Recommended air pressure: 60 - 90 PSIG (4.0 - 6.2 bar)

Tool air inlet: 1/4” NPTF, 3/8” mm. hose size

Air gun

Betaseal cartridge

bj43

Page 10

Lotus Service Notes Section BQ

It is not generally practical to remove a bonded panel intact, for later refitment. Consequently, when necessary, the panel can be cut away for better access to the bonded joint. It is not necessary to remove all traces of sealant from the joint faces on the remaining panels or chassis, but any remaining sealant must be securely bonded and no thicker than 1 mm or the fit and joint gaps will be upset. It is essential always to follow the cleaning/priming/bonding operations meticulously if sufficiently strong and durable bonds are to be obtained. Always use the specified materials.

BQ.7 - FRONT CRASH STRUCTURE

The front crash structure consists of an upper and lower moulding bonded together and supplied only as an assembly. It is bonded to the front face of the chassis, and is braced by an alloy undershield screwed to the bottom front edge of the chassis, and to each lower side of the crash structure. The unit also acts as a ducting for the engine cooling radiator and a.c. condenser (if fitted) which are mounted horizontally on its top surface in a bolted-on composite radiator housing. Longitudinal tubes formed in the construction are designed to produce a particular crush characteristic in order to control the rate of deceleration of the vehicle occupants in a frontal collision.

Operating handle

Compressed air inlet

Vibrating cutting blade

bj46

Crush tubes Radiator aperture

Crash structure

Airow to

climate chamber via cut outs in tubes

Chassis front face p84a

Page 11

Lotus Service Notes Section BQ

To remove the crash structure:

- Remove the front clamshell (see sub-section BR.5).

- Remove the front undershield by releasing the three screws securing each lower side of the structure to

the shield, and the three screws securing the shield to the front lower edge of the chassis.

- Drain the coolant and remove the radiator and pipework (see section KH).

- Remove the driving lamps (if fitted) from the crash structure, along with the towing strut, horn, alarm siren

and wiring harness.

- Use a seal cutting knife to cut the bond between the structure and the front face of the chassis. For access

to some of the bonding areas, it may be necessary to cut away some parts of the structure, rendering the

unit unsuitable for refitment. Take care not to damage the surface of the chassis when cutting the adhe-

sive. It is not necessary to remove all traces of old adhesive from the chassis, but a uniform surface must be

available for the new adhesive bead. The remaining adhesive must be securely bonded and be cut with

a scalpal blade to leave an even thickness of 1 - 2 mm.

Prepare the new structure for bonding:

- Dry fit the new structure to the chassis, and check that a good fit is achieved. Fettle the structure or remove

old adhesive as necessary until the fit is satisfactory.

- Re-activate the surface of the old adhesive on the chassis using Betawipe 4000 (see sub-section BQ.5),

and clean and prime the bonding area on the new crash structure using Betaclean 3900 and Betaprime

5404 (see sub-section BQ.5).

Bonding surface on chassis

Composite crash structure

b278a

Page 12

Lotus Service Notes Section BQ

- Apply a bead of Betaseal/mate adhesive (see sub-section BQ.5) to the bonding surface in the manner

shown.

- Fit the structure to the chassis and press into position to spread the adhesive. Use several clamps around

the joint flange to retain the structure until the adhesive has cured; This will take approximately 4 hours

dependent on atmospheric conditions, with a longer period required in dry atmospheres.

- Fit the undershield, radiator (see sub-section KH.4), front clamshell (see sub-section BR.5) and remaining

parts.

BQ.8 - WINDSCREEN FRAME

The windscreen frame is a single ICSRTM moulding with hollow, foam filled sections, and incorporates a forward extending buttress at each side to brace the frame against the front chassis. A separate dash baffle panel is used to bridge the space between frame underside and chassis scuttle, and provide for the routing of climate control pipework and air ducting, and other services.

Application of adhesive bead

Betaseal bead

b279

Windscreen frame

Dash bafe panel

Demist air duct

Face level vent duct

Chassis scuttle

Heater pipe

b282b

Page 13

Lotus Service Notes Section BQ

The shape of the frame is critical to the windscreen fit, and structural repairs to the frame itself are not recommended. It is not generally economic to attempt to remove the windscreen frame intact for refitment, as the elastomeric adhesive bonding the frame to the chassis requires cutting with a reciprocating knife, and access to the joints is sometimes ob scured. The recommended procedure is to cut the frame as necessary to allow its removal without damage to the dash baffle panel. If the sills are to remain fitted, it will be necessary to carry out some minor work on the screen buttress to sill panel joint, where a panel overlap occurs.

To Replace Windscreen Frame

1. Remove the front wheelarch liners and front clamshell (see sub-section BR.5), and for improved access,

the two doors.

2. Remove the windscreen (see sub-section BR.14).

3. Remove the instrument binnacle and fascia top panel (see sub-section BR.13), and release the fixings

between dash upper extrusion and screen frame.

4. Release the brake hose/pipe connector at the front end of each buttress on the windscreen frame. Release

all harnesses and other components from the windscreen frame buttresses as necessary.

5. Remove the wiper motor mechanism from the windscreen frame.

6. Use a sealant cutting tool to cut the bond between the windscreen frame buttresses and chassis, and

between the frame and 'B' posts, and between the frame underside and dash baffle panel. Remove the

windscreen frame.

7. Cut the adhesive securing the drainage gutter around the front of the frame, to allow transfer to the new

frame.

8. If the dash baffle panel is to be replaced, the clutch pipe and climate control cables must be released and

threaded through the panel before cutting the adhesive.

Primer band on chassis Heater pipe grommet

Primer band on bafe

Dash bafe panel

Foam strip

b283b

Page 14

Lotus Service Notes Section BQ

9. To fit a new dash baffle:

- Ensure the heater feed and return pipes are fitted.

- Dry fit the panel and mark up the bonding surface on the chassis scuttle.

- Prepare and re-activate the surface of the old adhesive on the chassis using Betawipe 4000 (see

BQ.5).

- Clean and prime the upper and lower bonding faces on the new baffle panel using Betaclean 3900 and

Betaprime 5404 (see sub-section BQ.5).

- Apply a bead of Betaseal/mate adhesive (see sub-section BQ.5) to the baffle lower flange.

- Position the panel and press along the length of the joint to ensure sufficient spread of adhesive. Clamp

the panel in position until the adhesive cures.

- Apply self adhesive foam strip A082U6065V to each vertical end face of the baffle panel, wrapping over

onto the top edge and along to the primed surface. Apply a second strip up each vertical face.

10. Prepare the old adhesive bead on the chassis for fitment of the windscreen frame by removing excess

sealant from all the bonding areas on the chassis, sill panels and dash baffle to leave a consistent and

level bonding surface for the new frame. It is not necessary to remove all traces of old adhesive, but a

uniform surface must be available for the new adhesive bead. The remaining adhesive must be securely

bonded and be cut with a scalpal blade to leave an even thickness of 1 - 2 mm.

11. Fit the wiper motor assembly and windscreen washer jets to the windscreen frame.

12. If necessary, fit a new roof side rail latch plate to the windscreen header rail - it is not recommended to

refit a bracket due to the requirement for high surface quality on the bracket.

- If applicable, completely remove any old adhesive from the header rail taking care not to damage the com-

posite substrate. Lightly abrade the bonding surface on the header rail but do not abrade the bracket.

- Clean the bonding surfaces on the header rail and bracket with Betaclean 3900 (see sub-section

BQ.5).

- Prime the header rail with Betaprime 5404, but do not prime the bracket.

- Generously coat the bonding surface of the bracket, with a 50/50 mix of Betamate 7064S (A116B0159V)

and Betamate 7014 (A116B0158V). Fit the bracket to the header rail and wipe off extruded adhesive with

Betaclean 3900. Position the bracket using tool T000T1422F (RH) or T000T1423F (LH), which sould be

taped to the header rail for at least 30 minutes.

13. Before fitting the windscreen frame, ensure that two setting rods are available for positioning the frame:

- Cut two 670mm lengths of locally sourced 10mm diameter steel rod.

14. - Prepare and re-activate the old adhesive bead on the chassis using Betawipe 4000 (see BQ.5).

- Clean and prime the bonding area on the new windscreen frame with Betaclean 3900 and Betaprime

5404 (see sub-section BQ.5).

- Apply a bead of Betaseal/mate adhesive (see sub-section BQ.5) to the whole of the bonding flange on the

windscreen frame and butresses, including the mating face between frame underside and baffle panel.

- Carefully fit the windscreen frame onto the chassis and press into position to ensure adequate adhesive

compression. Ensure the frame is positioned correctly in relation to the roll-over bar by fitting the two set-

ting rods in the roof siderail locating slots. The rods should locate snugly in the slots with no end play.

- Clamp the frame into position until the adhesive cures.

- Ensure good adhesion between the frame and baffle panel.

- Use a spatula to smooth out or remove any excess or extruded adhesive.

15. Seal the frame panel to the top of the door hinge post at each side by extruding a bead of Betaseal, and

smoothing with a spatula to obtain a neat finish.

16. Examine the whole of the bonding jointline for sealing integrity, and if necessary apply additional adhe sive

to seal any gaps. Use a spatula to smooth any visual areas to a neat finish.

17. Do not disturb the frame until the adhesive has fully cured (see sub-section BQ.5).

18. Fit the windscreen (see sub-section BR.14), dash panel and instrument pack (BR.13), front clamshell

(BR.5), and other components as necessary.

Page 15

Lotus Service Notes Section BQ

Windscreen frame bonding (sills not shown)

Windscreen frame

Windsceen frame buttress

Dash

bafe

panel

Bonding path

b281a

Page 16

Lotus Service Notes Section BQ

BQ.9 - SILL PANELS

The sill panels incorporate the ‘A’ and ‘B’ posts, and are bonded to the chassis, windscreen frame and rear bulkhead panel. The sill bottom flange, and rear end of the will top flange are bonded into grooves in the chassis main side rails and it is necessary to cut the sills in the course of their removal: It is not practical to attempt to remove a sill panel intact for later refitment. If sill damage occurs which is not repairable ‘in situ’, the sill panel should be renewed.

To Replace Sill Panel

A short section of sill flange underlaps the windscreen frame buttress flange in the front wheelarch area and requires that some cutting and laminating of the new panel is required on assembly.

1. Remove front and rear clamshells (see sub-sections BR.5, BR.6), dash panel (BR.13) and door hinge

bracket (BR.8).

2. Remove the door latch striker pin and washers, noting the assembly sequence. Remove the door sill trim

panel from the chassis and the door ajar switch from the sill panel.

3. Use a sealant cutting knife to cut the adhesive bead between sill and chassis/body panels. Note:

- In the front wheelarch area, a short section of the sill flange underlaps the windscreen frame buttress

flange. Unless the windscreen is also to be removed, it will be necessary to cut the sill around this flange

in order to release the sill.

- The bottom edge of the sill, and the rear part of the top edge, locate in grooves in the chassis side frame,

and may not readily be cut out with the sill intact. Cut the sill as necessary to release the panel, and then

remove the remaining edges of the panel from the chassis using a suitable cutting knife.

- Cut the sealant around the door hinge post aperture.

- Cut the sealant between the panel and roll over bar.

Bonding path Slots in chassis Door hinge siderail post

Cut ange

top corner Sill panel if necessary bj47a

Page 17

Lotus Service Notes Section BQ

4. Remove excess sealant from all the bonding areas on the chassis and body panels. It is not necessary to

remove all traces of old adhesive, but any remaining adhesive must be securely bonded and be cut with

a scalpal blade to leave an even thickness of 1 - 2 mm.

5. If necessary, cut the top front corner of the sill flange to allow mating of the panel around the windscreen

butress flange. Dry fit the sill and fettle as necessary to achieve a good fit. Note that a new sill will require

an alloy right angle bracket (A120B0053F) riveting to the rear end of the sill panel to form a bonding surface.

Holes are pre-drilled, with two pairs of holes in the bracket to suit Rover and Toyota powertrain cars. For

Toyota powertrain cars, use the innermost holes in the bracket to pull the sill panel furthest inboard.

6. Before preparing the surfaces for bonding, ensure that the necessary pipes and cables are fitted to the

chassis side rails: RH side: - heater feed pipe

- brake pipe

- alloy spigot for side impact foam LH side: - heater return pipe

- brake pipe

- clutch pipe

- servo vacuum hose

- main battery positive cable

- alloy spigot for side impact foam

Check that the following components are fitted into the composite sill: RH side: - 2 a.c. pipes (if applicable)

- oil cooler return hose (if applicable)

- side impact foam

- foam baffle LH side: - oil cooler feed hose (if applicable)

- side impact foam

- foam baffle

7. Prepare the bonding surface of the new sill panel with Betaclean 3900 and Betaprime 5404 (see sub-

section BQ.5). Prepare surface of the old adhesive bead on the chassis and body panels Using Betawipe 4000 (see sub-section BQ.5).

8. Apply a bead of Betaseal/mate adhesive (see sub-section BQ.5) to the bonding surface on the chassis and

body and fit the sill panel into position, first locating the sill bottom edge into its chassis slot, and press all around the joint to ensure sufficient spread of adhesive. If necessary, use a spatula to smooth or remove any extruded adhesive, and to neaten any visual areas. If necessary, add adhesive to the joint around the door hinge post, and to the windscreen frame, and smooth with a spatula.

9. Clamp the panel into position until the adhesive has cured (see sub-section BQ.5).

10. If the top front corner of the sill flange has been cut to fit around the windscreen butress flange, this area

should be reinforced as follows: Roughen the surface of the windscreen buttress flange and the adjacent sill panel in the modified area, and lay up two pieces of chopped strand mat across the joint.

11. Refit the dash panel, front and rear clamshells, doors, both wheelarch liners and other components as

necessary.

BQ.10 - REAR BULKHEAD

The rear bulkhead is a Polyurethane Structural Reaction Injection Moulding (PU SRIM), incorporates the rear window surround, and is bonded to the roll over bar and chassis fuel tank bay. A heat formed polyester fibre heat/acoustic insulator panel is bonded to the rear side of the panel, and incorporates a glass fibre aluminised cloth heat reflector shield in the vicinity of the exhaust manifold. The rear window is bonded directly to the bulkhead using the same materials and procedure as is used for the windscreen.

Page 18

Lotus Service Notes Section BQ

To replace the rear bulkhead:

1. Remove the rear clamshell (see sub-section BR.6).

2. Remove both seats, and the bulkhead interior trim panel.

3. Remove from the inside of the bulkhead the microwave sensor and immobiliser module. Release all wiring

harnesses from the bulkhead clips.

4. Release all fittings from the roll-over bar backstays (air cleaner, roll over valve) and remove both back-

stays.

5. Taking suitable precautions, remove the fuel filler hose and filler breather hose, and cap the tank apertures

to prevent dirt ingress and reduce fire risk.

6. Release the evaporative emissions charcoal canister and fuel filter from their bulkhead mounting brack-

ets.

7. Release the aerial lead from the bulkhead.

8. Using a long knife, cut the adhesive securing the insulator panel to the bulkhead, and remove the panel

to improve access to the bulkhead bonded joint.

9. Using a sealant cutting knife, cut the adhesive bead between the top section of the bulkhead and the roll

over bar, and between the bottom of the bulkhead and the chassis. If the sill panels are fitted, cut the bond between sill panel 'B' posts and the bulkhead panel.

10. Manoeuvre the bulkhead from the car.

To Fit Bulkhead Panel Before fitting a bulkhead panel, ensure that the following parts are bonded to the panel:

- Header tank mounting bracket;

- Charcoal canister mounting bracket;

- Immobiliser module stud plate;

- Fuel filter mounting bracket;

- Rear window glass;

All the above components are bonded using elastomeric adhesive applied as follows. Refer also to subsection BQ.5: Brackets & Studplates: Clean the bonding surfaces on the bracket and bulkhead with Betaclean 3900 (black cap) and prime both surfaces with Betaprime 5404 (red cap). Apply Betaseal 1701 adhesive to the bracket, and clamp in position until the adhesive has cured. Rear Window: Clean the whole of the bonding surface on the glass with Betawipe VP 04604 (yellow cap), and prime with Betaprime 5001 (green cap). Clean the corresponding surface on the bulkhead with Betaclean 3900 (black cap) and prime with Betaprime 5404 (red cap). Apply a bead of Betaseal 1701 to the periphery of the glass, and press into position on the bulkhead to ensure sufficient compression of the adhesive. Use a spatula to remove excess extruded adhesive and smooth any visual areas. Tape the glass into place if necessary to retain position until the adhesive cures.

Bonding of Bulkhead Panel: Clean the mating surfaces of bulkhead, roll over bar and (if fitted) sill 'B' posts, with Betaclean 3900 (black cap) and prime with Betaprime 5404 (red cap). Or, where applicable, use Betawipe 4000 to re-activate old adhesive (refer to sub-section BO.5). Clean the mating surface on the chassis with Betawipe VP 04604 (yellow cap), and prime with Betaprime 5404 (red cap). Apply a bead of Betaseal 1701 to the bonding path on the bulkhead, and manoeuvre into postion, pressing all round the joint path to ensure sufficient compression of the adhesive. Use a spatula to remove excess extruded adhesive and smooth any

Page 19

Lotus Service Notes Section BQ

visual areas. Secure in position with tape until the adhesive has cured.

The heat/acoustic insulator panel is bonded to the bulkhead only at its centre section. Clean and prime the centre section on the bulkhead with Betaclean 3900 and Betaprime 5404, and apply Betaseal 1701. Press the insulator panel into position and ensure sufficient compression of adhesive. Tape in place until the adhesive has cured.

Refit remaining components in reverse order to removal.

Lotus Service Notes Section BR

Page 1

BODY FITTINGS

SECTION BR

Sub-Section Page

Removable Roof BR.1 2

Rear Window Shroud (Elise only) BR.2 6

Front Body Access Panels BR.3 7

Engine Cover Lid BR.4 7

Door Hinge Cover Panel BR.5 9

Front Clamshell BR.6 9

Rear Clamshell BR.7 11

Door Mirrors BR.8 12

Door Shell Brackets BR.8a 13

Door Beam & Hinge BR.9 14

Door Shell Assembly BR.10 16

Door Glass, Guide Rails & Winder Mechanism BR.11 17

Electric Windows BR.12 21

Door Seals BR.13 23

Door Latch Mechanism (without CDL) BR.14 24

Central Door Locking BR.15 27

Instrument Binnacle & Dash Panel BR.16 28

Windscreen BR.17 33

Lotus Service Notes Section BR

Page 2

BR.1 - REMOVABLE ROOF

The Lotus Elise has been designed to exploit the pleasures of open top motoring, the better to enjoy exposure to the natural environment, unencumbered by the restrictions and confinement bestowed by a cockpit roof. In order to provide some weather protection to the occupants and vehicle interior, and allow the continued enjoyment of the car in unfavourable weather conditions, a simple hard or soft top roof may be fitted.

Due to the constantly changing dynamic and wind pressure loadings to which the roof structure is subject when driving, and the tolerances required to allow for repeated removal and refitting of the roof, complete weather sealing of the roof cannot be guaranteed, such that some wind noise and minor water leaks are considered normal for this model. The Elise or Exige should not be subjected to an automatic car wash. Such machines can induce water leaks caused by high pressure water jets which are not representative of conditions encountered during normal use. The brushes used may also damage the fabric of the soft top roof.

Exige Hardtop Roof:

The Lotus Exige has been conceived and configured as a sports coupé with a removable roof. The aerodynamic performance of the bodyshell including the front spoiler, rear aerofoil, roof panel and tailgate have been tuned to provide the optimum handling balance with the roof scoop on supercharged cars providing the cooling airflow for the chargecooler.

The roof panel may be removed for better access to the interior for servicing, and the car may be driven without the roof fitted, but wind buffeting and increased noise levels will be experienced together with a slight decrease in maximum power on supercharged cars.

Soft Top Roof

A hollow composite roof siderail is used on each side of the car to bridge each top corner of the windscreen frame to the roll over bar, and provide a mounting for a weatherstip seal, against which the top edge of the door glass abuts. The soft top roof canopy is fixed to each siderail, which uses a spigot pin at the front and rear to engage with a slot in a latch plate on the header rail and roll over bar. A second, spring loaded spigot pin at each end of the siderails, is arranged to slide into a ramped hole on the latch plates and secure and tension the soft top via steel cables running through the front and rear of the roof canopy.

Soft Top - Fitting

WARNING: The soft top roof should be fitted only whilst the vehicle is safely parked.

1. From its stowage bag in the rear luggage

compartment, withdraw the roof assembly

and support stays. Lower both door win-

dows, or open both doors.

2. Insert the two, identical, roof support stays,

with the arrows pointing forwards, into the

slots above the rear window , and in the wind-

screen header rail. Note that the slots are

keyed to prevent the stays being fitted the

wrong way round.

3. Lay the soft top roof across the centre of

the roof space with the arrows on the side

rails pointing forwards.

FITTING ROOF STAYS

Arrows point forward

Rear end keyway

b332

Lotus Service Notes Section BR

Page 3

4. Roll out the left hand side of the roof, and

engage the fixed spigot pin on the front and

rear end of the rail, into the uppermost slot

in the latch blocks at the front and rear of

the roof aperture.

5. Ensure that the tensioning cables at the front

and rear edges of the roof canopy are cor-

rectly located in the channels between the

seal and body before rotating the left hand

side rail downwards.

Ensure that both spring loaded pins ‘click’

into their ramped slots indicating that latch-

ing is complete. If necessary , ease the latch

handles on the inside face of the side rails

inwards to facilitate latching. Pull up on the

side rail to check security.

6. On the right hand side of the car, repeat steps (4) and (5) for the second side rail, noting that greater

rotating force will be required as tension is applied to the canopy.

Note: Engaging the left hand roof side rail first, will minimise the possibility of the canopy tensioning

cable adjusters causing damage to the roof seals.

Soft Top - Removal

WARNING: The soft top roof should be removed only whilst the vehicle is safely parked.

1. Open both doors or lower both door win-

dows.

2. On the inside face of the right hand roof

side rail, locate the two latch release levers:

Pull the two lever handles towards each

other to release the side rail latches (press

down on the side rail if necessary to relieve

the load on the latch pins), and rotate the

rail upwards to release the canopy tension.

3. Repeat step (2) for the left hand side rail.

Note: Releasing the right hand roof side

rail first, will minimise the possibility of the

canopy tensioning cable adjusters causing

damage to the roof seals.

4. Carefully roll up each side of the roof canopy towards the centre, lift off the car, and stow in the roof bag.

5. Unhook the two roof stays and stow in the roof bag. Important Note: If the roof is not fully dry, it should be stowed for no longer than a few days before unrolling

or refitting and allowing to air dry completely . Prolonged stowage of a wet or damp roof will promote rotting of the fabric.

Roof Cable - Front: The tension of the steel cable running through the front edge of the roof canopy should be adjusted with the side rails latched. Hook a spring balance under the centre of the cable, and apply an upwards force of 6 kgf. Adjust the cable tension to achieve a vertical gap of 6mm between the cable and top surface of the windscreen surround.

Spigot pin

Spring loaded pin

FITTING SIDERAIL ohs111

RELEASING ROOF SIDE RAIL ohs112

Lotus Service Notes Section BR

Page 4

Roof Cable - Rear: The roof rear cable tension should be sufficient only to maintain stability of the roof canopy shape. Side Rail Front Latch Plates: The latch plates on the windscreen header rail are secured using a two part adhesive. If necessary , use Betaclean 3900 (A100B6008V), Bet aprime 5404 (A082B6337V), and a 50/50 mix of two part adhesive Betamate 7064S (A116B0159V) and Betamate 7014 (A116B0158V) to refix.

Hard Top Roof

Note

- The hard top roof has been designed to provide a seasonal, rather than single trip option. Some owners

may prefer to entrust the fitting and removal of the hard top roof to their dealer.

- When stowing the roof off the car, care should be taken to avoid damage to the roof corners; e.g. use a

suitable soft floor covering on which to stand the roof.

- Fitment or removal of the hardtop is made considerably easier with the assistance of a second person.

- Use only the ‘Torx’ tool supplied in the vehicle tool kit to tighten or release the roof fixing screws.

- The hardtop roof fixings are made captive to the roof to prevent their loss.

Hard Top - Fitting WARNING: The hard top roof should be fitted only whilst the vehicle is safely parked.

1. Open both doors, and preferably with the aid of an assistant, lower the roof onto the car holding aside the loose tethered fixings to avoid their entrapment or their causing paint damage. Position the rear edge of the roof first before locating the front edge against the windscreen header rail.

2. Locate a front spigot bracket into its latch plate lower slot (lifting the roof slightly to allow this) and retain to the roof with the Torx bolt. Use only the special tool supplied, and do not fully tighten at this stage.

3. Repeat step (2) for the opposite front spigot bracket.

4. Engage a rear cup bracket with the lower tongue on its rear latch plate, and retain to the roof with the Torx bolt. Use only the special tool supplied, and do not fully tighten at this stage. Ensure that the cup is fully located onto the tongue.

5. Repeat step (4) for the opposite rear cup bracket.

6. Push the roof fully forwards before tightening the front spigot brackets using only the special tool supplied. Hold each rear cup bracket in alignment whilst tightening the single fixing screw for each bracket. Do not overtighten.

7. Fit the cover panels to each rear corner of the roof, noting that the panels are handed for left and right sides. Press the panels firmly into position fully to engage the 'Velcro' fixing patches.

FRONT SPIGOT BRACKET b330

FITTING REAR CUP BRACKET

REAR CORNER COVER P ANEL

Lotus Service Notes Section BR

Page 5

8. Using the special tool provided, install the windscreen header cover panel by locating first with the central screw, and then by the outer screws before tightening in the same order.

9. Check that the roof is secure by pulling upwards on each corner in turn. If any upward movement is evident, check the correct fitment of all mounting brackets.

Hard Top - Removal

WARNING: The hard top roof should be removed only whilst the vehicle is safely parked.

1. Open both doors.

2. Using the special tool supplied, release the three T orx screws securing the windscreen header trim panel, and remove the panel.

3. Using the special tool supplied, slacken the Torx screw securing each front corner spigot bracket to the roof, but do not yet remove the screws.

4. Pull off the trim cover from each rear corner of the roof panel and remove the screw securing the hook bracket to the latch plate at each rear corner.

5. Remove the two front corner bracket fixing screws and lift the front edge of the roof slightly to release the front brackets from their latch plate slots.

6. With the aid of an assistant, lift the roof from the car taking care to restrain the tethered brackets to avoid damaging the paintwork.

7. If storing the roof vertically, take care to avoid damaging the panel corners by using a protective floor covering.

WINDSCREEN HEADER TRIM

WINDSCREEN b331 HEADER TRIM

FRONT CORNER SPIGOT BRACKET

b330

REAR CUP BRACKET

Lotus Service Notes Section BR

Page 6

BR.2 - REAR WINDOW SHROUD (Elise only)

The rear window shroud is a body colour composite panel which covers the seat belt mounting frame/roof hoop, and forms a capping for the rear of the cockpit. The panel is secured by two brackets on its front edge which are fixed each side by a single M6 screw to the top of the rear bulkhead panel and which are accessible from within the cabin. On some cars it may be necessary first to remove a trim panel secured by five screws. Note that Neoprene washers are used between the brackets and the bulhead.

Each rear leg of the shroud is fitted with a captive M6 stud, which locates through a hole in the clamshell buttress, with the retaining nut accessible either from the engine bay , or wheelarch area. A foam gasket is used to prevent chafing damage between the shroud and clamshell.

When removing the shroud, it is also necessary to peel off the rear weatherstrip from the front edge of the panel, and to remove the two cant rail latch plates from their brackets on the roof hoop.

Note that on the Exige, the rear window shroud is an integral part of the rear clamshell moulding.

Roof/'B' post weatherstip seal

Neoprene washers

Fixing screw to rear bulkhead Fixing nut to

rear clamshell

Rear window shroud

Foam gasket

pl1020mt

Lotus Service Notes Section BR

Page 7

BR.3 - FRONT BODY ACCESS PANELS

Elise

Two removeable, body colour composite panels are provided in the front body to allow access to the front fusebox and brake fluid reservoir. T o remove an access panel: Use the hexagonal key supplied in the vehicle tool kit (in the battery cover rear pocket), to release the single threaded fastener securing the outboard corner of the panel, and withdraw the panel from the two locating holes in the front body spine. Guard against the lightweight panel being blown away and damaged by a strong wind. T o refit a panel: Hook the extended lip on the front edge of the p anel beneath the rear edge of the louvre panel before engaging the two locating pegs on the inboard side of the access panel with the grommeted holes in the front body spine. Fit the single screw at the outboard corner of the panel into the captive nut in the body , taking care not to cross-thread or overtighten the screw. Re-stow the hexagonal key in the tool kit.

Note that the outboard fastener uses a mounting plinth adjustable in height to allow optimum panel alignment to be achieved.

WARNING: Ensure the access panels are refitted and properly secured before driving.

Exige

The access panels on the Exige model are shorter front to back than those of the Elise, and are retained by three socket head screws, the outermost of which features an adjustable plinth to allow panel height adjustment.

BR.4 - ENGINE COVER LID

Elise

The engine cover/boot lid is moulded from glass fibre composite and incorporates 4 engine cooling outlet grilles secured by double sided tape and plastic rivets into recessed apertures. Two hinges are used to attach the lid to the rear bulkhead, with stud plates fixing the hinges to the bulkhead from the engine bay side, and the nuts accessible from the cabin after removal of the rear bulkhead trim panel. A single, key operated latch mechanism secures the lid to a striker pin mounted on the clamshell engine/boot bulkhead. The latch is released by inserting the ignition key into the lock and turning clockwise, the lock barrel being connected to the latch mechanism by a short link rod. When the latch is released, a spring plunger will lift the lid sufficiently to allow it to be raised fully by hand. Support the lid by inserting the prop provided on the boot bulkhead into the slotted plate adjacent to the latch mechanism. The spring plunger also operates a micro-switch for the alarm system, and is protected from exhaust manifold heat by a steel shield.

When closing the lid, fully engage the latch mechanism by pressing down on the cover only immediately above the latch. Note that the lock mechanism plastic cover plate on the underside of the engine lid, serves also to channel any water ingress from around the lock into the engine bay. Drain holes are provided in the gutter surrounding the engine bay, with a collector and drain tube fitted at the rearmost extremity.

On USA models, an fluorescent emergency internal release handle is fitted on the underside of the lid to facilitate the escape of a trapped child.

To remove the engine cover, release the cover from the two identical hinges. Note that the hinges also serve to clamp the clamshell front edge to the cabin rear bulkhead.

Beware that the engine cover is locked whenever it is closed, and always requires the use of the ignition key to release. Owners should be made aware of the importance of having a spare key available in case of inadvertently locking the keys in the boot.

REMOVING ACCESS PANEL ohs93

Lotus Service Notes Section BR

Page 8

Exige

On Exige models, the double skin, moulded composite tailgate panel, mates with an air intake duct in the clamshell and roof panel to admit cooling air into the engine bay, and also features seven steel mesh grilles to allow for the exhaustion of hot air. The t ailgate p anel uses extruded alloy hinges at it s front edge, anchored to the underside of the clamshell, and is provided with a gas spring strut to support the lid in the fully open position. The latch mechanism is mounted on the boot bulkhead, where it, and an adjacent alarm plunger switch are protected by a steel heat shield. The latch is operated by a cable release from a lever handle mounted outboard of the driver's seat back.

A rear aerofoil with integrally moulded support struts, is secured to the rear end of the tailgate and transfers loads via adjustable abutments into the boot bulkhead and body structure.

Theaded insert in engine lid

Engine lid hinge

Studplate clamping hinge & clamshell to bulkhead

b318

Nut inside cabin

Tailgate release handle

ohs141

Lotus Service Notes Section BR

Page 9

BR.5 - DOOR HINGE COVER PANEL

A separate glass fibre composite body p anel is used to fill the area beween the door and wheelarch, and uses threaded fasteners to attach to the rear of the clamshell, top of the sill and bottom inboard edge of the sill panel.

To remove a door hinge cover panel:

- From beneath the sill, remove the two fixings securing the bottom edge of the hinge panel to the sill.

- Remove the filler panel concealing the fixing securing the hinge cover to the door sill recess, and remove

the fixing.

- Remove the wheelarch liner and remove the single screw securing the door hinge cover panel to the

clamshell.

- Release the repeater lamp harness and withdraw the panel.

BR.6 - FRONT CLAMSHELL

The front clamshell is a bonded assembly of several glass fibre composite mouldings incorporating both front wings, the front access aperture, radiator air intake and headlamp housings. The clamshell is secured to the windscreen frame, radiator mounting panel and other panels using threaded fasteners for ease of removal and to facilitate service access and body repair.

To Remove Front Clamshell

1. Remove both front body access panels.

2. Remove both front wheelarch liners;

No fixing used Remove front in this position top fixing

Door sill filler panel

Door hinge cover panel

Hinge cover to door sill fixing

Hinge cover to b231 sill underside

Lotus Service Notes Section BR

Page 10

3. From inside each wheelarch, remove the single screw securing the top edge of the door hinge cover

panel to the clamshell. On cars fitted with front mounted oil coolers, release the hoses from any clamshell

clips around the top of the wheelarch.

4. Via each door aperture, remove the single fixing securing a bracket at the top rear corner of the clamshell

to the base of the windscreen pillar.

5. Remove the fixing at each side securing the clamshell to the bottom of the windscreen frame.

6. Elise: Remove the two nuts securing the clamshell spine bracket to the wiper motor bracket extension.

Exige: Remove the two nuts and bolts securing the clamshell spine to the wiper motor extension bracket,

and the two screws each side securing the clamshell channel to the radiator air deflector panel.

7. If fitted, remove the single fixing at the bottom front of each wheelarch, securing the clamshell to the

radiator panel extension (not used on oil cooler cars).

8. Remove the headlamp cover/mask assembly from each side by releasing the three socket head screws

inside the wheelarch. Remove the clamshell fixing at the front of each headlamp housing. Release the

headlamp harnesses, and feed through the clamshell hole. Disconnect the aerial lead(s).

9. Beneath the nose, release the screws fixing the front lower edge of the clamshell to the alloy undertray.

10. Lift the clamshell from the car. Note any spacing washers or shims fitted at any fixing point.

Clamshell spine to Fixing inside wiper motor bracket headlamp housing

Clamshell lower front Fixing to edge to undertray windscreen

frame

Fixing to base of

windscreen pillar Fixing to radiator mounting panel (not used with oil coolers) Fixing of door hinge b316

cover panel to clamshell

Lotus Service Notes Section BR

Page 11

BR.7 - REAR CLAMSHELL

The rear clamshell is a one piece composite moulding incorporating both rear wings, the engine bay aperture, rear transom and integral luggage bay. The clamshell is secured to the chassis and other body panels by threaded fasteners for ease of service access and body repair.

To Remove Rear Clamshell

1. Remove the soft or hard top roof (including Exige) - see sub-section BR.1

2. Remove both rear wheelarch liners;

3. Elise: Remove the rear window shroud - see sub-section BR.2.

Exige: From within the cabin, remove the two screws above the rear window securing the top edge of the

clamshell to the rear bulkhead. Remove the two cant rail latch plates from their brackets on the roof

hoop. Peel off the weatherstrip seal from the clamshell flange.

4. From inside the cabin, remove both seats and the full width trim panel from the rear bulkhead. From the

access thus provided, remove the fixing securing the front end of the clamshell to the 'B' post above the

engine bay air intake.

5. Elise: From inside the cabin, release the fixings securing the engine lid hinges to the rear bulkhead, and

withdraw the engine lid complete with hinges.

Boot floor to subframe

Engine lid hinge fixings

b317a

Fixings to sill

panel and grille 'B' post fixing from inside cabin

Lotus Service Notes Section BR

Page 12

6. Release the six (USA market) or eight (other cars) screws securing the fuel filler neck to the clamshell.

Withdraw the filler neck from the clamshell aperture, noting the earth braid secured to the roof hoop backstay. Keep the filler cap fitted to minimise vapour hazard.

7. Remove the air filter box intake scroll, and from inside each rear wheelarch, release the air intake grille

fixings, and the two screws securing the clamshell to the waistline joint of the sill panel. Withdraw each grille from its retaining clip.

8. Remove the battery and feed the battery cables through the clamshell grommet. Disconnect the rear

harness and rear lid switch harness from the area behind the battery, and feed through the clamshell grommet.

9. Remove the rear diffuser panel.

10. From inside the luggage area, release the two screws each side securing the boot floor to the subframe.

11. Unhook the washer bottle.

12. Withdraw the clamshell from the car, noting any spacer pads fitted on the subframe.

13. Refit in reverse order to disassembly with the following notes: Shimming of clamshell floor mounting points:

It is most important to maintain a gap of at least 7mm between the phenolic resin heatshield rivetted to the underside of the clamshell boot floor, and the exhaust muffler corrugated heat shield bolted to the subframe. The corrugated shield must touch neither the muffler, nor the clamshell mounted shield, or heat damage may be caused to the clamshell.

On factory build, the subframe is marked adjacent to each of the four clamshell mounting points with the shim thickness required. Shim plates are available in 1mm and 2mm thicknesses. If a new subframe is being fitted, or the markings are not visible;

- Use a straight edge across the clamshell rear mounting points on the subframe, and measure down to the

muffler heatshield. Sufficient shims need to be used to bring this dimension to a minimum of 7mm.

- With these shimplates fitted, trial fit the clamshell and if necessary add further shims to optimise the fit of

the clamshell with respect to sill and door shutlines.

- Measure the shim gap at the boot floor front fixing point.

- Remove the clamshell, fit the required shim plates onto the subframe and refit the clamshell.

BR.8 - DOOR MIRRORS

The manually adjustable, plastic housed door mirrrors, are mounted via an injection moulded plinth to the door shell. A spring loaded ball and socket arrangement provides a means of mirror adjustment, and a sprung attachment of the mirror housing to the pivot socket allows for the mirror to move forwards or backwards on accidental contact, in order to reduce the potential for personal injury or vehicle damage.

Mirror housing

b240

Mirror glass & surround

Lotus Service Notes Section BR

Page 13

Replacement of mirror glass

The mirror glass is contained in a plastic surround which is clipped into the housing in order to provide for convenient and inexpensive replacement. To remove a glass, pull back the boot between mirror and plinth, and carefully prise the inboard edge of the mirror surround from its retaining clips. Working around the mirror periphery, continue to prise the surround from the housing taking care not to damage the paint on the housing. Press the new glass/surround into the housing until all the retaining clips are engaged, and reposition the convoluted boot.

Note that convex glass is normally fitted to both sides, but certain markets, including the USA, use flat glass in the driver's side, and passenger side USA mirrors are convex and etched 'Objects in mirror are closer than they appear'.

Replacement of mirror assembly

The mirror assembly locates in the plastic injection moulded plinth via two spigots, and is retained by a single screw tapping into the lower spigot. To remove a mirror assembly, use a cross head cranked screwdriver, or similar tool, to remove the screw recessed into the inside face of the mirror plinth.

Replacement of mirror plinth

The mirror plinth incorporates tapping plates to accommodate a single screw into the top leg, and a pair of M5 screws into the bottom leg. The plinth is secured to the door outer panel with access holes for the three screws provided in the inner panel, cosmetically concealed by adhesive patches.

Note that a magnet may be required when removing or refitting the rearmost screw.

BR.8A - DOOR SHELL BRACKETS

The composite door shell is fitted with various steel brackets bonded to its inner surface in order to mount the shell to the door beam and also to mount hardware components such as the latch and window lift mechanism. The brackets are bonded to the SMC door structure using ITW Plexus adhesive. If, for whatever reason a bracket should become detached, the following procedure should be used to re-secure:

1. Remove the failed component from the door.

2. Prepare the bonding surface of the component using emery cloth.

3. If the bracket does not already have holes drilled in the bonding surfaces, use the illustrated examples to

add 6mm holes to the relevent surfaces and provide the adhesive with a good keying feature.

b242b

Socket head screw

Adhesive patch

Mirror mounting plinth

Mirror assembly

b241a

Mirror fixing screw

Lotus Service Notes Section BR

Page 14

4. Prepare the bonding surface of the door panel using coarse emery cloth and clean with Betaclean 3900

(A100B6008V). It is not necessary to remove all existing adhesive if this is securely bonded.

5. Apply a liberal quantity of ITW Plexus MA 920 adhesive (A117B0209V) to the door panel, and within a

maximum period of 4 Minutes (a longer open time will degrade adhesive performance) position the

bracket and ensure that the adhesive is extruded through the keying holes. Remove excess adhesive

which would interfere with any door functionality. Secure the bracket in position for a minimum of 30

minutes to allow adhesive to cure.

6. Re-assemble door and check for correct function.

7. If a latch mounting bracket needs to be rebonded, it is recommended to fit a cup washer A117W4192K

diagonally opposite (i.e. to the latch top mounting screw) to that already used on the inboard lower screw.

BR.9 - DOOR BEAM & HINGE

The door shell is bolted to a hollow section extruded aluminium alloy door beam, hinged at the front end to the ’A’ post, and carrying the door latch mechanism, via steel brackets, at its rear end. The front end of the door beam is welded to a second extrusion which forms the rotor of the door hinge. The hinge stator (or hinge bracket) is bolted to an outrigger on the chassis, and incorporates two cylindrical bearing housings fitted with maintenance free pivot bushes.

Door hinge adjustments

In order to provide for adjustment of door shutlines, the door hinge may be adjusted in two ways: i) Height of the hinge, its fore/aft position, and the pivot axis angle (to control the front/rear height align-

ment) may be adjusted after slackening the hinge bracket fixing bolts. The tapping plates for these bolts

are linked in vertical pairs and are captive, but loose, within the chassis outrigger, and allow for some

vertical movement. Horizontally slotted fixing holes in the hinge bracket allow for fore/aft movement.

ii) Slotted shim plates fitted between the hinge bracket and chassis, allow the in/out door front edge align-

ment to be adjusted in steps of 1 rnm, and by varying the shim pack at the top and bottom pairs of fixings,

the vertical alignment, as viewed from the front, may be adjusted.

Ensure that the clamping load of the hinge bracket to the chassis is not corrupted by the shim plates bearing against the body. If the surrounding body stands proud of the chassis door hinge outrigger, use a suitably cut down shim plate to act as a spacer between the chassis and the adjustment shim pack or hinge bracket.

Exterior lock/finger Window rear guide Shell to beam grip bracket channel bracket front lower bracket

6mm holes 6mm holes

b347

Lotus Service Notes Section BR

Page 14

Door beam pivot bearings

The door beam hinge uses two maintenance free ’top hat’ section synthetic bearings, pressed into the hinge stator bracket. Inside each bearing, is fitted a ‘top hat’ section steel rotor bush, clamped to the door beam extension by an M10 cap head screw threaded into the door beam.

The door beam extension also incorporates a cheek flange which abuts against a rubber strip on the hinge bracket to limit door opening angle. A spring steel plate fixed to the front of the hinge bracket is designed to engage around the profiled edge of the door beam abutment flange when the door is fully open, in order to provide a sprung restraint for the door in this position. A plastic shoe is used over the sliding surface of the spring plate to provide for maintenance free operation, with the shoe moulding clamped between the spring plate and chassis. To help protect the hinge mechanism from water and dirt ingress, a plastic shield is push fitted over the retaining nuts for the spring plate.

To remove the door assembly, or for access to the door pivot components, the two M10 cap head rotor bush retaining screws should be removed, and the door assembly withdrawn from the hinge bracket. The rotor bushes and/or bearings may then be withdrawn from the hinge bracket. On re-assembly , note that the bearings and bushes are assembled dry from above and below the upper and lower housings respectively , and the cap head screws tightened to 45 Nm. Insert the rubber bungs into the bush ends to inhibit dirt ingress and corrosion.

Door shell to Tapping plate beam fixing

Shim plate

Chassis outrigger

Dirt shield

Door beam (hinge rotor) Door restraint

spring plate

Plastic shoe Hinge bracket b243b

(stator)

Lotus Service Notes Section BR

Page 15

BR.10 - DOOR SHELL ASSEMBLY

The door shell is mounted on the door beam via three screws through a flange at the front end of the beam, and by the door latch mounting bracket at the rear end. In order to provide fixing points for the beam, lock mechanism and other components, the door shell includes various tapping plates and brackets jig bonded to the inside of the shell, including fixing brackets for the accurate location of the window guide rails.

If a door is to be removed from the car, the preferred method is to release the M10 cap head screws clamping the upper and lower bushes to the door beam. The beam and door shell assembly may then be withdrawn from the hinge stator bracket without losing adjustment of the hinge alignment and door shutlines. If the door shell has to be removed from the beam for repairs or replacement, the beam may be left ’in situ’ and the door shell slid off the beam using the following procedure:

Removal of door shell from beam

The door shell is secured to the beam via three screws through a flange at the front end of the beam, tapping into nut plates bonded into the door shell, and via two bolts at the rear end of the door to the door beam extension bracket. Access to the two bolts securing the extension bracket to the door beam requires that the door glass first be released:

1. Remove the window winder handle and door trim panel (manual windows) or the door trim panel and

window switch (electric windows).

2. Release the three screws securing the interior release handle, and unclip the control rod from the mecha-

nism.

3. Remove the two M6 and the single M8 screw securing the door beam flange to the front of the door shell

4. Release the three M6 nuts securing the door glass to the lift channel, and separate the glass from the

channel. Tilt the glass as necessary to allow access to the two M8 bolts fixing the rear end of the door

beam to the extension bracket. Remove the bolts and withdraw the door assembly from the beam.

Note that it is necessary to remove the drop glass waist seal before the glass may be withdrawn from the

door.

Rubber bung

Rotor bush

Plastic bearing

Door beam/ hinge rotor

Stator bracket

Cap head screw

Hinge bracket fixings b244

Lotus Service Notes Section BR

Page 16

When refitting the door, take care not to scratch the glass if this is contained in the door. Insert the two rear bolts securing the beam to the latch bracket, but do not tighten until the three fixings securing the front of the shell to the beam flange have been fitted and tightened.

BR.1 1 - DOOR GLASS, GUIDE RAILS & WINDER MECHANISM - Manual Windows

A manually operated door window scissor type lif t mechanism is used in conjunction with two steel guide rails and a ’frameless’ door design.

The operating principle of the window lift mechanism is that of a scissor linkage, with the front lower end of the primary leg anchored to the door shell, the lower end of the secondary leg sliding in a horizontal channel on the door shell, and the upper ends of both legs sliding in a channel fixed to the bottom edge of the window. The geometry of the system provides for a parallel lift of the glass, where the angle of the bottom edge does not change throughout the range of travel. An extension to the primary scissor leg carries a toothed sector which is engaged by a pinion on the window winder. The front and rear edges of the glass are guided by steel rails which engage with point contact Nylon guide blocks bonded to the glass. The bottom ends of the rails are adjustable in/out to set the inward tilt of the glass, with the 'up' glass position controlled by an eccentric stop on the winder mechanism.

Door glass adjustment

To adjust the door glass for optimum weather sealing and ease of operation:

1. Fit the soft top roof and fully raise the window. Check the alignment of the top edge of the glass against

the seal, and the seal compression along the cant rail and up the 'A' and 'B' posts. A light compression is

required; just sufficient to ensure sealing, without imposing loads on the winder mechanism.

2. To adjust the inward tilt of the glass, screw the adjusters at the bottom of each guide rail in or out as

necessary. Access is available without removing the door trim panel. Check that the window glass

moves freely throughout the range of travel.

Beam to extension Door beam Captive Door beam bracket fixing extension fixing flange

bracket

Door beam

Door shell to extension bracket fixing Door shell to

beam fixing b245a

Lotus Service Notes Section BR

Page 17

Door glass lift channel

Nylon guide

block Door glass Guide rail Scissor Door Steel guide tilt top fixing linkage glass rail

Adjuster Handle pinion screw

Reaction Toothed sector

channel Threaded block fixed Door to rail anchorage

point

b285a

Threaded block fixed to door shell

Lotus Service Notes Section BR

Page 18

3. To adjust the alignment of the top edge of the glass, it is necessary to adjust the height of the reaction

channel. Remove the window winder handle and door trim panel, slacken the reaction channel fixings, and move the channel up or down as required. Raising the channel will raise the rear edge of the glass.

4. To adjust the fully up position of the glass, the eccentric stop on the toothed sector of the winder mecha-

nism must be rotated as necessary . A mesh friction washer is fitted between the eccentric and the sector to help retain adjustment.

To replace the door window glass

1. Remove the window winder handle, and the door trim panel.

2. Release the three fixings securing the slider channel to the bottom of the glass.

3. Do not attempt to withdraw the glass from the door without first removing the door waist seal. Carefully

prise the one-piece seal off the door shell inner and outer flanges, and release the push fixing from the seal moulding at the rear end of the door. Withdraw the glass from the door shell.

4. Note that new door glasses are supplied complete with jig bonded Nylon sliders and stud plate.

5. Fit the new glass into the door and re-assemble in reverse order to the above.

6. Adjust the glass position as detailed above.

To replace door winder mechanism

1. Remove the window winder handle, and the door trim panel.

2. Release the interior release control rod from the door handle and unclip from the latch mechanism.

3. Secure the door glass in the fully raised position, and release the three fixings securing the winder

mechanism to the door;

- two fixings adjacent to the winder spindle;

- on fixing through the static pivot of the primary scissor arm

4. Manoeuvre the mechanism to free the winder spindle from the door, and to disengage the two upper

sliding bosses of the scissor arms from the window channel, and the lower sliding boss from the static reaction channel. Withdraw the mechanism from the door.

5. Before fitting a lift mechanism, lubricate the three slider bosses and the sector teeth with Century Luplex

M2 grease (or similar). Fit the mechasnism into the door and engage the three slider bosses in their lift and reaction channels before securing with the three fixing screws. Note that a single M6 spacer washer is used between the pivot of the primary scissor arm and the door shell.

Mesh friction washer Winder spindle

Eccentric stop

Toothed sector

b274

Lotus Service Notes Section BR

Page 19

Door glass slider block

Winder mechanism

Lift channel

Door glass stud plate

b321

Reaction Scissor arm Winder channel pivot fixing mechanism

fixing

6. Adjust the glass upstop postion, top edge alignment and inward tilt as detailed above.

Door glass guide rails

Two guide rails are used for door glass; one for the front and one for the rear edge. Each of the steel, black zinc plated, guide rails, is secured by a single screw at the top end to a jig bonded bracket in the door shell, and by a threaded adjuster at the lower end, engaging in a threaded block fixed to the door shell. Screwing the adjusters in or out will set the inward tilt of the glass and the contact between glass and door weatherseal.

To remove a guide rail, first remove the door glass (see above), before releasing the single screw at the top, and releasing the threaded block from the door shell.

Lotus Service Notes Section BR

Page 20

BR.12 - ELECTRIC WINDOWS (Parts List 11.02)

On cars so equipped, switches for the electric windows are mounted in the front of the door trim panels, and are operative only with the ignition switched on. To help locate the switches in the dark, an illuminated dot is provided in the ‘down’ button which glows amber when the lights are switched on.

To lower a window, switch on the ignition and press the lower, dished end of the switch in the relevent door. Release the switch to stop window movement. To raise a window, press the upper, domed end of the switch.

The electric operation of the door windows comprises;

- An electric motor and winder drum assembly mounted on a bracket which is bolted to the door shell.

- A guide channel for the window lift block, incorporating top and bottom cable pulleys, bolted to the door

shell.

- A single drive cable running from the window lift block, around a guide channel pulley, through a flexible

conduit, around the motor driven winder drum, through another conduit, around the second guide channel

pulley and back to the window lift block.

- An adaptor plate bolted to the stud plate on the lower edge of the door glass.

Door Glass Adjustment

- The door glass guide channels and adjustment procedures are the same as used on manually operated

windows. Refer to sub-section BR.11.

- The upstop for the door glass is fitted at the top end of the lift block guide channel in the form of an

adjustable stop screw against which a projection on the window lift bracket abuts.

- The front/rear height of the top edge of the glass may be adjusted at the slot where the front of the window

lift bracket attaches to the door glass.

Viewed from outboard

Upper guide pulley Window upstop

Window lift block

Drive cable

Motor mounting plate

Adaptor plate fitted to glass

Guide channel

Window winder Bottom guide pulley drum

Window lift motor b337

Lotus Service Notes Section BR

Page 21

Replacement of Window Lift Mechanism

The window lift mechanism comprises the motor, drive cable and guide channel assembly as a complete unit. To remove the mechanism:

1. If possible, raise the window fully for optimum access.

2. Remove the door trim panel and disconnect the window switch. Peel off the plastic water shielding.

3. Release the window lift bracket from the door glass and secure the glass in the fully raised position taking

care not to damage the door waist seals in the top of the door shell.

4. Unplug the motor electrical connector. Release the three fixings securing the motor mounting bracket,

and the two remaining fixings securing the guide channel to the door shell.

5. Carefully manoeuvre the lift mechanism from the door.

6. Refit in reverse order to removal, noting that the motor mounting bracket is fixed directly against the door

shell, but that 4mm plastic spacers are used at each of the three guide rail fixings..

Guide rail Motor mounting top fixing bracket fixings

b339

Guide rail bracket fixings

Door shell inner panel

Setscrew and washer

Window lift motor

4mm plastic

spacer Threaded insert

Cable winder Motor mounting Guide rail Guide drum bracket bracket rail b340

Lotus Service Notes Section BR

Page 22

Note that the door glass is common to manually operated windows, with slider blocks bonded to the front and rear edges, and a studplate channel bonded to the lower edge. For electric window operation, an adaptor studplate is used to provide two studs for the window lift bracket.

BR.13 - DOOR SEALS (Parts List 11.01) Drop Glass 'Waist' Seal

The door drop glass waist seal is a single unit comprising inner and outer seal extrusions joined around the rear end by a moulded capping piece. Each length of seal is pressed onto the top edge of the inner or outer door panel, with a plastic rivet securing the capping piece. The seal should be removed before withdrawing the door glass or guide channels from the door.

A 'cheater' seal is bonded to the front and rear faces of the door mirror mounting extension. To fit a new seal:

- Clean the bonding surfaces on the door shell edges with Betaclean 3900 (A100B6008V).

- Apply Permabond A905 surface conditioner to the bonding surfaces of door shell and cheater seal.

- Apply Loctite 382 adhesive to the inside of the cheater seal and fit onto the door. Door Weatherstrip

A hollow section rubber weatherstrip is bonded around the door aperture and roof landings to seal against the door shell and roof. Different seal configurations are used for the door and roof areas, with specially moulded sections to interface with the roof cantrails. The seal is divided into front and rear sections, with a joint at the bottom front of each door aperture.

The weatherstrips are manufactured with a self adhesive backing strip. Before fitting a new seal, the bonding area on the body must be thoroughly cleaned with Betaclean 3900 (A100B6008V). In the critical area of the 'A' post to windscreen header rail corner, an adhesive promoter 3M 4298UV (A116B6000V) should be applied along the seal path to to ensure optimum seal retention. Trial fit the seal before peeling off the protective backing from the adhesive and applying the seal, ensuring that the moulded sections at the cant rail interfaces are correctly positioned.

When fitting the rear section of the seal, remove the backing strip from the seal in the section around the latch plate, and fully insert the weatherstrip nodule into the gap between the 'B' post and rear window shroud.

Weatherstip seal

Seal path

Weatherstrip nodule

Rear window shroud

'B' post

b335

Lotus Service Notes Section BR

Page 23

Continue to remove the backing strip and stick the weatherstrip along the seal path down the 'B' post and along the bottom of the door aperture. Cut the seal to mate with the end of the front weatherstrip. Repeat for the opposite side, and then remove the top section backing strip and secure the seal along the roof shroud flange. Use a roller wheel along the whole length of the seal to ensure full adhesion.

A secondary 'J' section seal is applied to the front vertical face of the door shell, linking to the cheater seal.

BR.14 - DOOR LATCH MECHANISM - Without CDL (Parts List 10.17)

Interior release handle Exterior release

Relay lever button Interior release assembly control rod

Exterior lock control

Door latch mechanism rod

Bracket, door beam rear b251a end to door shell

Lotus Service Notes Section BR

Page 24

The door latch mechanism is fitted inside the rear face of the door, which is reinforced by a steel plate bonded to the glass fibre composite door shell. The latch engages with a striker pin which passes through the composite sill/'B' post moulding, into a captive nut on the roll over bar. An external locking door release button is mounted via a reinforcing plate, in the top rear of the door outer shell, and transmits its motion around the rear edge of the door glass to the latch mechanism via two short link rods and a relay lever.

The interior release handle is mounted in the front of the door inner shell, and is connected to the latch mechanism by a control rod. No interior control of door locking is provided.

Interior Release Handle

- Remove the window winder handle and door trim panel.

- Remove the four screws securing the interior handle assembly and unclip the control rod end clip to allow

the rod to be unhooked from the handle.

- On refitting, ensure that the control rod is located in the guide clips.

Exterior Release Button

- Remove the access disc from the rear face of the door, and the rod access grommet lower down.

- Release the two screws securing the lock assembly and angle bracket to the tapping plate bonded in the door shell.

- Unclip the link rod from the relay lever, and withdraw the lock button from the door.

Trim panel Door shell

Release handle

Rod guide clips

b260a

Exterior release button fixings (use Permabond A130 A912E7033V)

Control rod access

b255b

Lotus Service Notes Section BR

Page 25

Latch Mechanism

- Remove the window winder handle and door trim panel.

- Unclip the control rod from the interior release handle, and unhook from the latch mechanism.

- Unclip and disconnect the short link rod between the relay lever and the latch mechanism.

- Remove the three M6 screws securing the latch mechanism to the door, and withdraw the latch.

Relay Lever Mechanism

The relay lever components comprise a shaft with an integral lever on one end, which connects to the exterior lock button, and a second lever pinned to the other end, which connects to the latch mechanism. The shaft is supprted in two fibre bushes housed on the bracket connecting the rear end of the door beam to the door shell. To remove the door beam extension bracket complete with relay lever mechanism:

- Remove the window winder handle and door trim panel.

- Release the three M6 nuts securing the door glass to the lift channel, and separate the glass from the channel. Do not attempt to withdraw the glass from the door without first removing the door glass waist seals.

- Remove the access grommet from the rear face of the door , and unclip the exterior lock link rod from the

relay lever. Similarly disconnect the link rod between the relay lever and the latch mechanism.

- Support the door shell before removing the two M8 bolts fixing the rear end of the door beam to the end

bracket, and the two screws securing the bracket to the door shell. Remove the bracket complete with

relay lever assembly from the door.

- Refit the bracket in reverse order to removal.

Control rod to latch

Rod to

exterior

button

Plain & spring washers

Pivot bush

Relay lever/shaft

b256

Viewed through outer door skin

Plate bonded inside door shell

Control rod to interior handle

Control rod to relay lever

Rear b261

Outboard

Lotus Service Notes Section BR

Page 26

BR.15 - CENTRAL DOOR LOCKING (Parts List 10.17)

On cars so equipped, the central door locking (CDL) operates on the driver’s and passenger’s doors in conjunction with the Cobra 8185/8186 security alarm system. For full details of the alarm system, see subsection MP.1.

To lock the car, remove the ignition key, close both doors and check that the engine cover and front body access panels are secure. Arm the security alarm in the usual way by pressing once, for a full second, the larger of the two buttons on the transmitter key. This action will both arm the alarm and electrically lock the driver’s and passenger’s doors.

If it is desired to lock the doors from inside the vehicle, for example to deter highjack attempts, a CDL rocker switch is provided on the front of the gear lever shroud which should be pressed to the right to lock both doors with or without the ignition switched on. Alternatively, the doors can be locked individually by depressing the button at the rear end of each door sill. Note that whichever locking method is used, the doors will be ‘deadlocked’ such that the interior door release handles are inoperative.

To unlock the doors, press once, for a full second, the larger button on the transmitter key. The alarm will be disarmed and both doors unlocked. Alternatively, from inside the car, press to the left the rocker switch on the gear lever shroud to unlock both doors, or raise the sill button on each door. Note that in the event of a vehicle collision which causes the safety inertia switch to be tripped, the doors will automatically be unlocked.

Notes:

- In the event of a flat vehicle battery, the central door locking will not operate. The doors can be unlocked

only after opening the boot lid and restoring power to the battery by substitution, re-charging or ‘jumping’ to a second battery.

- To lock the car with a flat or disconnected battery, use the mechanical key in each exterior door button to

disconnect each release button from the latch. This technique does not 'deadlock' the interior release handles, but does allow continued key access to the car until restoration of battery power.

- To deadlock the car with a flat vehicle bat-

tery, or without the use of the transmitter or mechanical key , close and lock one door using the sill button, and for the second door, hold the exterior release button pressed in and depress the sill button before closing the door. Access is now available only on restoration of electrical power.

Door Locking Actuator

A CDL actuator is screw fixed to the door shell below the latch mechanism, and uses a link rod which passes through the rearmost (shortest lever length) hole on the latch lever, before continuing upwards to the door sill button. The latch mechanism within the door is protected from tamper attempts by a plastic security shield fixed with screws through the door shut face. To remove an actuator, remove the door trim panel, security shield, release the two actuator fixing screws, unhook the actuator from the link rod and disconnect the harness.

Refit in reverse order to removal, noting that no adjustment is required.

Door sill button

b338

CDL actuator

Rearmost hole

Lotus Service Notes Section BR

Page 27

BR.16 - INSTRUMENT BINNACLE & DASH PANEL (Parts List 14.10, 14.05, 14.05b)

The dash panel comprises interlinking alloy extrusions which join the chassis scuttle beam to the base of the windscreen pillars, and also provide a mounting for the fascia top trip panel. The lowermost extrusion, which incorporates a curved shelf, is keyed into a slot in the scuttle beam and is secured by rivets at each end to the beam. On non-airbag cars, two interlinking extrusions are joined by self tapping screws to form the top part of the dash panel, which is divided into two sections by the steering column. This upper dash is used to house the face level vents and audio set. On airbag cars, the two upper extrusions are combined into a single extrusion, which profile and function is similar to non-airbag cars, and which bridges the steering column area and includes an aperture through which the passenger airbag is deployed.

The upper extrusion(s) slots behind the top edge of the lower dash, and is secured at each end by two screws to threaded inserts in the base of the windscreen pillars. Additional location is provided by rivets securing the speaker or door sill trim panel mounting brackets.

On non-airbag cars, a skinned foam fascia top panel, trimmed with suede material, joins the top of the dash to the base of the windscreen and incorporates the demist ducting and four windscreen outlet vents, with a moulded plastic capping panel around the front of the fascia top and surrounding the vents. At each end of the fascia, a moulded plastic panel joins the fascia to the door sill finisher, and is used to mount the front speakers and lighting switches.

On airbag cars, the untrimmed skinned foam panel incorporates the ducting to the six fixed demist outlet vents, and also houses the front speakers. The face level vent outlets are housed in the moulded plastic panels joining the fascia to the door sill finishers and in a central moulding also housing the audio set.

For access to the climate controls, or electrical components mounted on top of the chassis scuttle beam, the fascia top panel must be removed.

To Remove Fascia Top Panel - non airbag cars

1. Remove the steering column upper and

lower shrouds:

- Remove the four screws securing the

shroud upper section.

- Pull out the grommet from around the

ignition switch and remove the three

screws securing the lower

shroud to the column.

- Disconnect the trip reset button from

the lower shroud.

Column upper shroud

Lower shroud mounting bracket

Column lower shroud

b258a

Lotus Service Notes Section BR

Page 28

2. Release the two fixings securing the binnacle mounting brackets to the column, and withdraw the instru-

ment pack and cowl. Unplug the harness connector.

3. Release the screws securing each fascia end (speaker) panel, disconnect the switch and speaker har-

nesses and withdraw the panels.

4. Carefully prise each windscreen outlet vent from the fascia.

5. Remove the screws at each end securing the fascia capping panel, and withdraw the panel.

6. Remove the plastic finisher above the climate controls. Remove the four screws securing the top flange

of the dash extrusion to the underside of the fascia top.

7. Lift the rear of the fascia top to release the two locating bosses from the keyhole slots in the dash, and pull

the fascia rearwards to withdraw the two front edge spigot pins.

8. If the demist ducting is found to have become detached, or loose from the facia top foam moulding, the

duct should be refixed as follows:

- Remove any fixing screws, separate the duct from the fascia and remove any glue from the ducting.

- Roughen the bonding surface of the fascia with sand paper and clean and degrease with Betaclean 3900

or Acetone. Similarly clean and degrease the bonding surface of the demist duct.

- Prime bonding surfaces with Betaprime 5404 and bond with Betaseal 1701 or similar one component

polyurethane adhesive.

Instrument cowl

Instrument pack

Binnacle mounting bracket

Mounting bracket fixing screw

b259a

Lotus Service Notes Section BR

Page 29

Moulded plastic Non-Airbag Type pl1405mt capping panel

Capping panel fixing

Fascia top panel

Dash fixing to screen frame

Column shroud

Fascia to dash fixing

Fascia top FLV/climate recess finisher control

housing

Dash lower

extrusion Keyhole slot for fascia

Audio set support

Dash upper extrusion Fascia top

Upper & centre extrusions

Chassis scuttle beam

Lower

extrusion

b202a

Lotus Service Notes Section BR

Page 30

Airbag Type

Instrument pack

mounting bracket Column shroud support leg Fascia top panel

Column shroud

Dash fixings to screen frame

FLV/audio

housing Climate control Airbag housing door

Airbag shute

Dash upper extrusion

Dash lower extrusion Audio set

support

Rivet to scuttle beam pl1405mtb

Lotus Service Notes Section BR

Page 31

To Remove Fascia Top Panel - airbag cars

WARNING: The airbag Sensor & Diagnositic Module can maint ain sufficient volt age to cause an airbag deployment for up to 20 seconds after the battery has been disconnected. Before working on the airbag system, or in close proximity to an airbag, first take the following precautions to disable temporarily the airbag system:

a. Turn off the ignition. b. Before disconnecting the battery, use the Lotus Scan tool to read any stored trouble codes. c. Disconnect the negative (earth) lead from the battery and tape back to ensure that no contact with the

battery negative terminal can be made. d. Wait for 30 seconds. e. If working on or near the steering wheel, locate the yellow harness connector alongside the steering

column near the column upper fixing. Unplug this connector. Note that the connector is fitted with

'shorting bars' which automatically interconnect the high and low terminals of the airbag to prevent acci-

dental deployment caused by a voltage differential.

When service work has been completed, reconnect the harness plug and secure with its locking feature, and reconnect the battery. Ensure the airbag tell tale lights for a few seconds with ignition and then goes out.

1. Column shrouds: Remove the two screws retaining the top part of the shroud, and the four screws

retaining the lower part, and withdraw both parts from the column.

2. Instrument shroud: Pull the instrument shroud backwards to release the four spring clips from their

apertures in the dash panel.

3. Sill top trims: Release the two screws at the bottom of the coin pockets at the front of each sill, and pull

the sill top trim panels from the chassis.

4. Dash end panels: Release the two screws within the top of each coin pocket, and withdraw the switch

panel (driver's side) and blanking panel (passenger side) from the dash end panel. Unplug the wiring

harness from the switch panel.

From within the aperture, release the two screws retaining each end panel to the dash, and pull the panel

rearwards to withdraw the spring clips in the top of the panel from the dash.

5. Airbag door: Pull the airbag door away from the dash, which action will probably require the four retaining

clips to be renewed. Note that the door is constrained by two tether straps.

6. Centre vent panel and radio surround: Release the two screws at each side of the panel and withdraw the

panel from its two spring clips.

7. Fascia top panel: Remove the 5 screws securing the rear edge of the panel to the dash rail, and withdraw

the panel rearwards to disengage the two spigots from the base of the windscreen surround. Disconnect

the speaker cables.

8. Refit in reverse order to removal.

Lotus Service Notes Section BR

Page 32

BR.17 - WINDSCREEN (Parts List 11.01)

The laminated windscreen, together with self coloured synthetic finisher moulded around the top and side edges, is bonded to the composite windscreen mounting frame using Betaseal flexible polyurethane adhesive. It is not practicable to remove a windscreen from a car and then refit the same glass, as removal of the screen will require cutting the surround finisher which is available only as part of a new windscreen assembly.

To Replace Windscreen Parts required:

Windscreen

Betaseal Kit A075B6158F

Plinth, interior mirror mounting

Plinth Adhesive Kit A116U0194S

1. On non-airbag cars, to minimise the possibility of trim damage, remove the fascia end (speaker) panels,

and the fascia top capping panel (around inside base of windscreen).

2. Remove the front clamshell (see sub-section BR.6).

3. Remove the wiper arm from its spindle, and the interior mirror from its plinth.

4. Cut around the whole length of the windscreen surround finisher to allow access to the 'screen adhesive

joint. Apply suction handles to the outside surface of the screen.

5. In order to incur the minimum risk of damage to the windscreen composite mounting frame, the preferred

method of cutting the windscreen adhesive is by the use of a 'cheese' wire. Protect the visual surface of

the windscreen frame with tape before commencing the cutting operation.

Screen removal tool

Cutting wire

b322

Lotus Service Notes Section BR

Page 33

6. After cutting out the screen, remove old adhesive from the windscreen frame sufficiently to leave a

consistent and flat surface for the new bond.

7. Clean the whole of the inside surface of the windscreen with a 50% solution of water and isopropanol.

Allow to dry.

8. Fit the interior mirror plinth to the inside of the windscreen using the adhesive kit and instructions sup-

plied.

9. Clean the whole of the inside surface of the obscuration band, and the bonding surface on the windscreen

frame with the wipe cleaner.

10. Apply a 25 mm wide band of Betaprime around the inside periphery of the glass. Similarly apply to the

whole of the bonding surface on the windscreen frame, and to the windscreen bottom laminated edge.

Allow to dry for a minimum of 5 minutes. If the screen is not fitted within 48 hours, the primer should be

re-applied. 1 1. Cut the nozzle of the Betaseal cartridge

to the dimensions shown to produce a

triangular section bead. Holding the car-

tridge vertically, extrude a bead of ad-

hesive around the screen, using the edge

of the finisher as a guide along the top

and sides, and following the centreline

of the primer band along the lower sec-

tion.

Windscreen top edge Screen centreline

Obscuration 79mm band

Mirror position on 63mm 63mm Mirror position on RHD offset to left LHD offset to right

b263

8 mm

10 mm

60 mm

b264

Lotus Service Notes Section BR

Page 34

12. Cut three 4mm spacer blocks from the material supplied in the Betaseal kit, or from rubber or plastic

material, and position in the inside edge of the adhesive bead running along the bottom of the class.

These spacers are used to control the fitted height of the glass, and the wiper arm clearance.

13. Using the suction handles, carefully lower the windscreen onto the frame, with the edge finisher firmly

butted against the top and sides off the frame recess. Press around the periphery of the screen to

compress the adhesive until contact with the finisher spacers and bottom edge spacer blocks is felt.

Carefully examine the integrity of the whole length of the joint, if necessary using a spatula to force extra

adhesive into any suspect areas. Wipe off any excess adhesive extruded from the joint, or alternatively,

allow the adhesive fully to cure and cut away any excess using a scalpel blade.

14. Use duct tape and/or support blocks to hold the screen in position and do not disturn until the Betaseal is

fully cured. This will take approximately 4 hours dependent on atmospheric conditions, with a longer

period required in dry atmospheres.

15. Refit wiper arm, interior mirror and front clamshell.

Cartridge nozzle

Betaseal bead

Edge finisher

Obscuration band

Primer band

Bead along centre of primer band

Spacer block in inside edge of bead

b265a

Lotus Service Notes Section BR

Page 35

Spillage of material a) Any spillage of Betaseal onto unprimed glass can be readily peeled off after it has cured. b) Any spillage onto the bldy can be removed with either Wipe Cleaner No.4, or white spirit.

Shelf life a) Betaseal primer has a useful life of about 24 hrs. after exposure to the air, af ter which it st art s to become

spongy . If the material is spongy, DO NOT USE. Always use glass primer immediately on opening, and

replace the lid after use. b) Betaseal has a shelf life of over 6 months at ambient temperature in the original unopened package.

Page 1

Lotus Service Notes Section CI

FRONT SUSPENSION

SECTION CI

Sub-Section Page

General Description CI.1 3

Geometry & Adjustments CI.2 3

Anti-Roll Bar CI.3 7

Suspension Disassembly/Assembly CI.4 9

Front Wheel Bearings CI.5 11

For Super Sport Suspension, see DH.6

Page 2

Lotus Service Notes Section CI

GENERAL LAYOUT

Spring/damper unit

Top wishbone Steering tie rod

Upper swivel joint

Track rod end

Steering arm

Anti-roll bar mounting

Anti-roll bar

Bottom wishbone

Hub carrier Wheel hub

Lower steering swivel joint

c34b

Page 3

Lotus Service Notes Section CI

CI.1 - GENERAL DESCRIPTION

The fully independent front suspension comprises, on each side of the car, upper and lower wishbones, a concentric coil spring/telescopic damper unit, and a tubular anti-roll bar. A forged steel hub carrier, provides a mounting for a the hub bearing unit to which the road wheel is attached via four spline socket bolts.

The upper and lower 'A' frame wishbones are fabricated from steel tube, the upper wishbone braced by sheet steel gussets at its apex, and the lower wishbone braced by a tubular strut at its base. The inboard ends of both wishbones use replaceable bonded rubber pivot bushes to provide maintenance free articulation, with a specification providing accurate and responsive dynamic characteristics. The outer ends of both wishbones incorporate housings into which the upper and lower steering swivel ball joints are pressed. The upper ball pin is secured to the forged steel, rearward facing steering arm, itself fixed to the hub carrier by two M10 bolts. The ball pin of the lower swivel joint is secured directly into a tapered hole in the bottom of the forged steel hub carrier. The Bilstein spring/damper unit acts between the outer end of the lower wishbone and the chassis, and is fitted with the damper rod lowermost in order to minimise unsprung weight.

A forward mounted tubular steel anti-roll bar, is supported in chassis mounted rubber or hard plastic pivot bushes and is operated via short ball jointed drop links from the lower wishbones.

CI.2 - GEOMETRY & ADJUSTMENTS

Provision is made for the adjustment of wheel alignment, camber and castor. Under normal service conditions, no periodic scheduled check of the geometry is necessary, although a front wheel alignment check is recommended when the front tyres are replaced. A full geometry check is required only after front suspension repair, or if excessive tyre wear is evident, or if steering difficulties are encountered. Before any measurements or adjustments are made it is essential first to set the vehicle to its ‘mid-laden’ ride height, approximating to driver and passenger and a half tank of fuel. This will require the vehicle to be ballasted, or tied down:

Standard Elise

Mid-laden ride height (reference height for geometry check);

- front 130 mm below front end of chassis siderail

- rear 130 mm below rear end of chassis siderail Camber - optimum - 0.1°

- tolerance + 0.1° to - 0.3°; Max side/side 0.2° Castor - optimum + 3.8°

- tolerance + 3.5° to + 4.1°; max. side/side: 0.35° Alignment - optimum Zero

- tolerance 0.5 mm toe-out to 0.7 mm toe-in overall (0.07° toe-out to 0.10° toe-in overall) Steering axis inclination 12° nominal

Sport Elise, Exige Mid-laden ride height (reference height for geometry check);

- all except USA prior VIN 3013 - front 130 mm below front end of chassis siderail

- rear 130 mm below rear end of chassis siderail

- USA prior VIN 3013 - front 135 mm below front end of chassis siderail

- rear 135 mm below rear end of chassis siderail Camber - optimum - 0.3°

- tolerance - 0.1° to - 0.5°; max. side/side: 0.2° Castor - optimum + 3.8°

- tolerance + 3.5° to + 4.1°; max. side/side: 0.35° Alignment - optimum Zero

- tolerance 0.5 mm toe-out to 0.5 mm toe-in overall (0.07° toe-out to 0.07° toe-in overall) Steering axis inclination 12° nominal

Page 4

Lotus Service Notes Section CI

Alignment

Wheel alignment refers to the parallelism of the wheels when viewed from above and is crucial to vehicle stability, handling and tyre wear.

Alignment is measured either by the angle a wheel makes with the vehicle centre line, or the difference in dimension between the wheel rim to wheel rim measurement at the front and rear of the wheel at hub centre height. The wheels are said to 'toe-in' when the wheel paths converge ahead of the vehicle, and 'toe-out' when they diverge. Wheel alignment is designed to vary with both steering angle (Ackerman) and suspension travel (bump steer) and should be measured only 'straight ahead' at the specified ride height.

Front wheel alignment is adjusted be screwing the track rods into or out of the track rod outer end ball joints. In order to preserve the required bump steer characteristic and steering symmetry, the effective length of each track rod must remain equal - adjust each track rod by a similar amount.

- Hold the track rod end using the flats provided, and slacken the locknut. Repeat for the opposite side.

- Turn each track rod a similar amount. As a guide, turning both track rods by one quarter of a turn will alter

overall toe-out by approx. 2.0 mm.

- When adjustment is correct, hold each track rod end and tighten the locknuts to 80 - 82 Nm (58 - 60 lbf.

ft).

When slackening or tightening the track rod end locknuts, it is important that the torque reaction is resisted using the track rod end flats, and that the ball joint itself is not allowed to be stressed.

Difference between rim measurements = overall toe out

FRONT

Individual toe out angle

c26

Steering rack gaiter

        Trackrodendats

Track rod end

Steering arm

                          Steeringtrackrodats

Track rod end locknut

c28a

Page 5

Lotus Service Notes Section CI

Camber Adjustment

Camber is the angle from vertical of the wheel when viewed from the front, and is said to be negative when the wheel leans inwards at the top (positive when leaning outwards). The primary purpose of camber is to achieve the maximum efficiency of the tyre under cornering loads and body roll, with the specification closely allied to a particular wheel/tyre combination. The camber angle changes with suspension travel, becoming more negative on bump, and should be measured only at the specified ride height. Incorrect camber can result in handling deficiencies and excessive tyre wear.

Camber adjustment is effected by adding or deleting shim plates between the steering arm (to which the upper steering swivel joint is fixed) and the hub carrier.

- Shimplates are available in 1mm and 3mm thicknesses.

- Reducing the shim pack thickness will increase negative camber. Adding shims will reduce negative

camber.

- A 1mm shim plate will alter camber by approximately 0.25°.

- In March '04 the caphead bolts securing the ball joint plinth to the hub carrier were upgraded from 8.8 to

10.9 grade, with a corresponding increase in torque from 45 to 68 Nm. Before fitting these bolts, inspect

the cap head for the grade marking, apply Permabond A130 (A912E7033) to the threads, and torque

tighten to the appropriate figure.

Camber angle

c29 Vertical Wheel centreline

Camber adjustment shimplate

Steering arm

Hub carrier c30a

Page 6

Lotus Service Notes Section CI

Castor Adjustment

Castor is the angle from vertical of the steering axis of the wheel when viewed from the side. Its primary purpose is to provide a natural straight running tendency of the steered wheels with forward vehicle motion. Castor angles have a complex interaction with other steering geometries and if unbalanced or outside of specification, can result in various stability and handling deficiencies.

The wishbone pivot bushes are bonded rubber type with a plastic flanged outer sleeve, a plain steel inner sleeve, and a plastic interleaf sleeve within the rubber bush to control the flexing characteristic. The top wishbone rear bush, identified by a blue paint mark, has no interleaf sleeve.

The top wishbone pivots are sandwiched between the walls of transverse chassis box sections, the pick up points in which are reinforced either with machined inserts, or in the case of the foremost position, a thick alloy plate, each being bonded to the chassis with epoxy adhesive. Spacer washers are fitted ahead of and behind each of the top wishbone pivot bushes to allow the wishbone to be displaced forwards or backwards, with an associated change of castor angle. A rubber faced snubber washer fitted against the rear face of the top wishbone front bush prevents metal to metal contact under extreme braking forces. The spacer washers may be re-distributed between the front and rear of each pivot bush but the snubber washer position, and the total shim pack thickness of 4 x 1.5mm at each pivot (inc. the 1.5mm snubber washer) must remain unchanged.

FRONT Top & bottom steering swivels

Castor angle c27

Top Wishbone Inboard Fixing

FRONT Front leg Rear leg

1.5mm shim 1.5mm shim washers washers Flanged plastic outer sleeve

No interleaf Inner steel Bonded Bonded on this bush sleeve plate Rubber faced inserts c32 snubber washer

Page 7

Lotus Service Notes Section CI

Notes

- Shim distribution at the front bush of either wishbone must be copied at the rear bush of that wishbone.

- Transferring a 1.5mm shim washer from ahead of, to behind the pivot bushes, will reduce castor by ap-

proximately 0.4°.

- Transferring a 1.5mm shim washer from behind, to ahead of the pivot bushes, will increase castor by

approximately 0.4°.

- Ensure that the load spreading washers are correctly located beneath the bolt heads and nuts as shown

in the drawings.

- Ensure that the pivot bolts are tightened only with the vehicle at ride height. Torque to 45 Nm.

CI.3 - ANTI-ROLL BAR

Three types of anti-roll bar and chassis mounting have been used:

1. The standard tubular steel anti-roll bar is mounted in pivot bushes onto the front face of the chassis, and

is linked to the outboard ends of each lower front wishbone via short ball jointed links. The bar is mounted

to the chassis using rubber pivot bushes for noise isolation, retained by alloy clamp brackets. Washers

welded to the bar bear against the inner sides of the bushes to provide lateral location of the bar. Castrol

LMX rubber grease, or equivalent, should be used when fitting the rubber bushes onto the anti-roll bar.

2. On Elise and Exige models built with 'Super Sport' suspension prior to August '06, a stiffer adjustable bar

is used with 5 holes in each end to allow some adjustment of roll stiffness to be made. Standard setting is

centre hole. Using a more forward hole increases stiffness. Two hard plastic clamping blocks secure the

bar to the chassis via the front lower wishbone inboard front pivot bolts, with 'top hat' section steel spacers

preventing the clamps from being crushed. An M5 bolt is used to close the bottom of each clamp.

Anti-Roll Bar Mounting - Rubber Spacer plate

Rubber mounting

Clamp bracket

c40

Anti-Roll Bar Mounting - Hard 1 'Top hat' spacer

Clamping block

M5 bolt

Lower wishbone pivot bolt Anti-roll bar

c40a

Lotus 2004 Eleven, 2004 Elise, 2004 Exige Service Notes

Specifications and Main Features

Frequently Asked Questions

User Manual