StopTech 98-139-1470 User Manual

Installation Instructions

2000+ BMW Z8

355mm Front Big Brake

Upgrade

98-139-1470 Rev. B 03-12-03

Caliper Brackets

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OMPONENT IDENTIFICAOMPONENT IDENTIFICA

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OMPONENT IDENTIFICA

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OMPONENT IDENTIFICAOMPONENT IDENTIFICA

355mm AeroRotor and Hat Assemblies

TIONTION

TION

TIONTION

High Performance Street Pads

ST-40 Calipers

Stainless Braided Lines and Hardware

BMW Z8 Big Brake Kit

This is a representative photograph. The actual com­ponents in your kit may appear slightly different.

3541 Unit A, Lomita Boulevard, Torrance, CA 90505 [phone]
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APPLICAAPPLICA

APPLICA

APPLICAAPPLICA

TION DISCLTION DISCL

TION DISCL

TION DISCLTION DISCL

AMERAMER

AMER

AMERAMER

Caliper Clearance

Most 18” wheels will clear the outer diameter of the caliper on a 355mm kit. However, the more
critical clearance is the gap between the spokes of the wheel and the face of the caliper. Do not
assume a 19, 20 or even 24 inch wheel will clear the face of the caliper.

distance measured from the stock rotor face to the inside of the wheel spokesdistance measured from the stock rotor face to the inside of the wheel spokes

distance measured from the stock rotor face to the inside of the wheel spokes

distance measured from the stock rotor face to the inside of the wheel spokesdistance measured from the stock rotor face to the inside of the wheel spokes
the Z8 Fthe Z8 F

the Z8 F

the Z8 Fthe Z8 F

Drawing page on our website for more specific measurements at www.stoptech.com.

FF

inal fitment of the wheel to the caliper is the rinal fitment of the wheel to the caliper is the r

F

inal fitment of the wheel to the caliper is the r

FF

inal fitment of the wheel to the caliper is the rinal fitment of the wheel to the caliper is the r

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ecommend at least 2mm of additional clearecommend at least 2mm of additional clear

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ecommend at least 2mm of additional clear

e re r

ecommend at least 2mm of additional clearecommend at least 2mm of additional clear

esponsibility of the customeresponsibility of the customer

esponsibility of the customer

esponsibility of the customeresponsibility of the customer

The actual metal-to-metalThe actual metal-to-metal

The actual metal-to-metal

The actual metal-to-metalThe actual metal-to-metal

is 58.72 mm for is 58.72 mm for

is 58.72 mm for

is 58.72 mm for is 58.72 mm for

ance. ance.

ance. See the Wheel Fitment

ance. ance.

..

.

..

Wheel Spacers

Wheel spacers can provide extra clearance to the outer face of the caliper. This will also space out the
entire wheel, widening the track width of the vehicle. Fender clearances should be checked on
lowered cars, and longer lug studs or wheel bolts are usually required. Note: The Wheel Industry
Council has issued guidelines advising wheel spacers not be used.

It is the responsibility of the customer to insure wheel spacers are properlyIt is the responsibility of the customer to insure wheel spacers are properly

It is the responsibility of the customer to insure wheel spacers are properly

It is the responsibility of the customer to insure wheel spacers are properlyIt is the responsibility of the customer to insure wheel spacers are properly
specified and installed.specified and installed.

specified and installed.

specified and installed.specified and installed.

Brake Vibration - THIS IS IMPORTANT!

The most common cause of brake vibration is improper bedding of pads and rotors or improper
pad selection for the specific driving environment. Rotor runout may also cause vibration, but
precision manufacturing and inspection typically means runout is not an issue. Double disc grind­ing insures the rotor runout is within +/- 0.002” when installed on our aluminum hat and controls
thickness variation within 0.0003”. Under the most extreme conditions, any rotor may warp, but
uneven pad deposition is a more typical vibration cause. If the system is not properly bedded in, or
street pads are run on an open track, uneven pad deposits will occur causing an ever worsening
vibration. Failure to immediately address a pad deposition/vibration issue may lead to permanent
damage of the rotors. Please read and understand the bed-in procedures included with this manual.
If you have any questions, please contact the StopTech Customer Service Department for assistance.

STOPTECH is not liable for vibrations caused by extreme usage or improperSTOPTECH is not liable for vibrations caused by extreme usage or improper

STOPTECH is not liable for vibrations caused by extreme usage or improper

STOPTECH is not liable for vibrations caused by extreme usage or improperSTOPTECH is not liable for vibrations caused by extreme usage or improper
break-in procedures.break-in procedures.

break-in procedures.

break-in procedures.break-in procedures.

Brake Noise

Certain brake pad compounds make more noise than others. Proper anti-squeal shim plates be­tween the caliper pistons and backing plate of the pad help reduce the problem. Anti-squeal lubri­cants are also available to reduce some of the noise. The reality is, performance pads are more prone
to brake squeal.

The customer is responsible for any squeal related problems due to padThe customer is responsible for any squeal related problems due to pad

The customer is responsible for any squeal related problems due to pad

The customer is responsible for any squeal related problems due to padThe customer is responsible for any squeal related problems due to pad
selection.selection.

selection.

selection.selection.

3541 Unit A, Lomita Boulevard, Torrance, CA 90505 [phone]
www.stoptech.com 3

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Wheel Fitment:Wheel Fitment:

Wheel Fitment:

Wheel Fitment:Wheel Fitment:

Do not assume your wheels will fit. An outline drawing of your StopTech Big
Brake kit is available on our website at http://www.stoptech.com. Measure the
distance from the outer face of your stock caliper to the inner face of your wheel
spokes, or make a template according to the instructions on the website and deter­mine if a wheel spacer may be necessary. DO THIS BEFORE YOU INSTALL
YOUR KIT!

Cleaning of Rotors:Cleaning of Rotors:

Cleaning of Rotors:

Cleaning of Rotors:Cleaning of Rotors:

The AeroRotors supplied with this kit are coated with a water soluable, environmen­tally friendly rust inhibitor. This coating MUST BE WASHED OFF WITH SOAP
AND WATER before installation. Brake cleaner is not as effective as soap and water.
Even if it doesn’t look as if anything is coming off the rotor, the rust inhibitor is there
and must be entirely cleaned. Rotors will quickly rust without protection. If the
rotor is not rusty, it’s still coated. After cleaning, you will see the rotor immediately
start to develop a slight rust color. This is normal and desirable as it indicates all the
rust inhibitor has been removed.

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oticesotices

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otor and Potor and P

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otor and Potor and P

Proper rotor and pad break-in is essential to the performance of your new brake
system. Failure to properly break-in the brakes will seriously impact how well they
work and how long they last. The number one cause of brake vibration is uneven pad
material deposition on the rotor. Proper break-in will greatly minimize such prob­lems.

Follow the break-in procedures listed later in this manual as closely as possible.

If you have any questions about wheel fitment, rotor cleaning or
break-in of a particular pad type, please call our Customer Service
Department @ 310-325-4799 X 105 or you can e-mail directly to
[e-mail]

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BMW Z8 FBMW Z8 F

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Please, Please,

Please,

Please, Please,
including the included Bincluding the included B

including the included B

including the included Bincluding the included B

Safety NoticeSafety Notice

Safety Notice

Safety NoticeSafety Notice

Improper handling of a vehicle, especially while raised and supported by jack stands, ramps or
other mechanical means can cause serious bodily injury or even death. It is strongly recommended
that a trained, experienced mechanic, with proper equipment, install the Big Brake Kit as supplied
by StopTech LLC. StopTech LLC assumes no liability expressed or implied for the improper
installation or use of this product or its components.

Liability NLiability N

Liability N

Liability NLiability N

Automobile racing and performance driving, whether sanctioned or not, on or off the street, is
dangerous. Products used in such environments / applications are subject to stresses and condi­tions outside of normal use, wear and tear. All equipment sold or provided by StopTech LLC is sold
WITHOUT WARRANTY, EXPRESSED OR IMPLIED. No warranty or representation is made to
the product’s ability to protect the user from injury or death. The user assumes all risk. StopTech
LLC is NOT responsible for any damage, consequential or otherwise for equipment failure or mal­performance after installation. Under no circumstance are we liable for labor charges or loss of use.

believe usbelieve us

believe us

believe usbelieve us

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, it will be better to read and understand this ENTIRE Installation Manual,, it will be better to read and understand this ENTIRE Installation Manual,

, it will be better to read and understand this ENTIRE Installation Manual,

, it will be better to read and understand this ENTIRE Installation Manual,, it will be better to read and understand this ENTIRE Installation Manual,

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Note: Some different models or years may use different size fasteners. Every effort has been taken to
correctly identify the proper size tool for each job. Occasionally, the manufacturer may use an
alternate fastener. Check that each tool correctly fits the fastener before loosening or tightening.

18mm wrench or socket, 1/2” drive suggested
14mm wrench or socket
11mm box wrench (in addition, an 11 flare wrench is also recommended)
10mm wrench or socket
6mm Allen (hex) wrench
1/2” socket
Torque wrenches capable of 10-85 ft/lb settings
Small drip tray or several rags
Small funnel
Anti-Sieze compound
Brake bleed bottle
1 pair of jack stands or means of supporting vehicle
Plastic or non-marring mallet
File or hand grinder

quipment Rquipment R

quipment R

quipment Rquipment R

equirequir

equir

equirequir

eded

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3541 Unit A, Lomita Boulevard, Torrance, CA 90505 [phone]
www.stoptech.com 5

- DOT 3 or 4 Brake Fluid. Check manufactures’ recommendation for compatibility. StopTech
recommends flushing brake fluid every 1-2 years, or more often under severe usage conditions. If
not done recently, the installation of a brake kit is an excellent opportunity to refresh your brake
fluid or upgrade to a higher performance fluid such as Motul 600.
Additional items you may need include:

- Adhesive backed lead wheel weights

This kit contains the following:This kit contains the following:

This kit contains the following:

This kit contains the following:This kit contains the following:
1 pair of ST-40, 4 piston calipers sized specifically for the BMW Z8

1 set of high performance brake pads
1 pair of 355 X 32mm 2-piece rotor assemblies
1 pair of aluminum caliper adapter brackets
4ea. 7/16-20 Jet Nuts
4ea. 12mm washers
1 pair of stainless brake lines
1 pair of Banjo Bolts
2 pair of copper washers
1 pair of rubber end caps
1 pair stainless washers for brake lines

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aliperaliper

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Many wheel-cleaning solutions contain Many wheel-cleaning solutions contain

Many wheel-cleaning solutions contain

Many wheel-cleaning solutions contain Many wheel-cleaning solutions contain
on any caliper and aluminum anodized finish, especially the plating on theon any caliper and aluminum anodized finish, especially the plating on the

on any caliper and aluminum anodized finish, especially the plating on the

on any caliper and aluminum anodized finish, especially the plating on theon any caliper and aluminum anodized finish, especially the plating on the
harhar

dwardwar

har

dwar

harhar

dwardwar

question on an inconspicuous area. Avoid over spraying, and rinse cleaningquestion on an inconspicuous area. Avoid over spraying, and rinse cleaning

question on an inconspicuous area. Avoid over spraying, and rinse cleaning

question on an inconspicuous area. Avoid over spraying, and rinse cleaningquestion on an inconspicuous area. Avoid over spraying, and rinse cleaning
solutions off as quickly as possible. solutions off as quickly as possible.

solutions off as quickly as possible.

solutions off as quickly as possible. solutions off as quickly as possible.

damage to caliperdamage to caliper

damage to caliper

damage to caliperdamage to caliper

Step 1Step 1

Step 1

Step 1Step 1

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aise aise

R

aise

RR

aise aise

Apply Parking brake and block rear wheels.
Break loose the lug nuts on both front wheels before jacking up the car.

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at and Bat and B

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at and B

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at and Bat and B

e. Check for adve. Check for adv

e. Check for adv

e. Check for adve. Check for adv

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el, stable and clean surel, stable and clean sur

el, stable and clean sur

el, stable and clean surel, stable and clean sur

car on jack-stands should be used for the installation.car on jack-stands should be used for the installation.

car on jack-stands should be used for the installation.

car on jack-stands should be used for the installation.car on jack-stands should be used for the installation.

racket Fracket F

racket F

racket Fracket F

erse effects berse effects b

erse effects b

erse effects berse effects b

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, hat or br

, hat or br, hat or br

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inish Dinish D

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acket finish due to corracket finish due to corr

acket finish due to corr

acket finish due to corracket finish due to corr

isclaimer:isclaimer:

isclaimer:

isclaimer:isclaimer:

strong acidsstrong acids

strong acids

strong acidsstrong acids

y try tr

ying a small amount of the cleaner inying a small amount of the cleaner in

y tr

ying a small amount of the cleaner in

y try tr

ying a small amount of the cleaner inying a small amount of the cleaner in

STOPTECH will not be held liable forSTOPTECH will not be held liable for

STOPTECH will not be held liable for

STOPTECH will not be held liable forSTOPTECH will not be held liable for

face suitable for supporface suitable for suppor

face suitable for suppor

face suitable for supporface suitable for suppor

that may damage the finish that may damage the finish

that may damage the finish

that may damage the finish that may damage the finish

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e chemical ee chemical e

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e chemical e

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ting theting the

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ting theting the

e.e.

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e.e.

Refer to the Owners Manual for correct location for jacking up the vehicle. Jack up the vehicle
and secure on a pair of jack stands.

NENE

VER LEAVER LEA

NE

VER LEA

NENE

VER LEAVER LEA

3541 Unit A, Lomita Boulevard, Torrance, CA 90505 [phone]
www.stoptech.com 6

VE ANY VE ANY

VE ANY

VE ANY VE ANY

ALAL

AL

ALAL

VEHICLE SUPPORVEHICLE SUPPOR

VEHICLE SUPPOR

VEHICLE SUPPORVEHICLE SUPPOR

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AA

YS USE JAYS USE JA

W

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CK STCK ST

CK ST

CK STCK ST

TED TED

TED

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ANDS.ANDS.

ANDS.

ANDS.ANDS.

WITH ONLWITH ONL

WITH ONL

WITH ONLWITH ONL

Y A JAY A JA

Y A JA

Y A JAY A JA

CK,CK,

CK,

CK,CK,

Step 1 (continued)Step 1 (continued)

Step 1 (continued)

Step 1 (continued)Step 1 (continued)
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ote: All Pote: All P

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ote: All P

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ote: All Pote: All P

After securing the vehicle at a convenient
height, remove the front wheels.

Step 2Step 2

Step 2

Step 2Step 2

hotographs Shotographs S

hotographs S

hotographs Shotographs S

hoho

w Right Sw Right S

ho

w Right S

hoho

w Right Sw Right S

ide Iide I

nstallation Unstallation U

ide I

nstallation U

ide Iide I

nstallation Unstallation U

nless Nnless N

nless N

nless Nnless N

oted Ooted O

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therther

ther

therther

wise.wise.

wise.

wise.wise.

Disconnect Stock Brake LineDisconnect Stock Brake Line

Disconnect Stock Brake Line

Disconnect Stock Brake LineDisconnect Stock Brake Line

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ARNING - ARNING -

W

ARNING -

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ARNING - ARNING -

br br

br

br br

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Place a drip tray or several rags directly below the inboard brake line connection. If the area
around the brake line connection to the chassis and strut is dirty, clean with brake cleaner or
appropriate cleaning agent

Use an 11mm flare wrench to slightly
loosen the hard line fitting from the stock
brake line.

Switch to an 11mm stubby wrench if available
and remove the rubber line from the hard line.
Place one of the rubber caps over the end of
the hard line. This should effectively control
fluid loss for the duration of the installation.

e sure sur

e sur

e sure sur

removed, it is likely more fluid will drip.removed, it is likely more fluid will drip.

removed, it is likely more fluid will drip.

removed, it is likely more fluid will drip.removed, it is likely more fluid will drip.

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ake fluid will damage most painted surake fluid will damage most painted sur

B

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ake fluid will damage most painted sur

BB

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ake fluid will damage most painted surake fluid will damage most painted sur

ake fluid frake fluid fr

ake fluid fr

ake fluid frake fluid fr

e the cap is secure the cap is secur

e the cap is secur

e the cap is secure the cap is secur

om any painted surom any painted sur

om any painted sur

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ely installed on the master cylinderely installed on the master cylinder

ely installed on the master cylinder

ely installed on the master cylinderely installed on the master cylinder

faces.faces.

faces.

faces.faces.

faces. Ifaces. I

faces. I

faces. Ifaces. I

mmediately clean spilledmmediately clean spilled

mmediately clean spilled

mmediately clean spilledmmediately clean spilled

. If the cap is loose or. If the cap is loose or

. If the cap is loose or

. If the cap is loose or. If the cap is loose or

3541 Unit A, Lomita Boulevard, Torrance, CA 90505 [phone]
www.stoptech.com 7