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Rolls-Royce and Bentley Motor Cars
Engine Settings
rht September 2008
Proudly provided by the Rolls-Royce Owners Club of Australia for all Rolls-Royce and Bentley Enthusiasts
Page 2
Rolls-Royce and Bentley Motor Cars
A guide to engine settings - Post 1946
Applicable to
All Rolls-Royce and Bentley motor cars post 1946.
Introduction
The purpose of this Product Support Information Sheet is to give a quick reference to the general engine parameters required for the
setting and servicing of our engines on a daily basis.
It must be noted however that due to the complexity of our fuel/engine management systems, some of the engine's parameters have
been omitted and replaced by the respective Workshop Manual and appropriate page numbers. Where it refers to specific 'Notes",
they can be found at the back of each section contained within this Product Support Information Sheet.
The information within this Product Support Information Sheet is split into two main areas. Sections 1 to 6 inclusive deal with motor
cars equipped with SU and Solex carburetters manufactured between 1945 and 1986. They also include the early fuel injection cars
built to comply with the Federal emission requirements. Sections 7, 8, and 9 deal with all engine management/fuel systems post 1987
and include the Bosch K, KE2, and Motronic fuel systems.
Index of sections
1.) All cars from 1946 to 1965.
2.) United Kingdom and European specification 1965 to 1986. Also, ignition timing conversion chart for 95 RON unleaded fuel.
3.) American specifications 1967 to 1986.
4.) Australian specifications 1976 to 1986.
5.) Japanese specifications 1975 to 1986.
6.) Middle East specifications 1984 to 1986.
7.) All naturally aspirated cars fitted with the Bosch K fuel system (VIN 20001 to 27799).
8.) All Turbocharged cars fitted with the Bosch KE fuel system (VIN 20001 to 23935).
9.) All cars fitted with the Bosch Motronic fuel systems -Post Turbo (VIN 24519) and naturally aspirated cars (VIN 30001).
The information contained within this Product Support Information Sheet can also be found in a new pocket sized manual TSD 5353.
Section 1 -All cars from 1946 to 1965
Editorial Note based on comments from Club members after discussion:
The figures quoted above for idling and fast idle speed for the 6-cylinder cars seem too high. Suggested figures are:
4.25 & 4.5 Litre with Manual Transmission, 6.4:1 Compression Ratio: 350 RPM idle, 950 RPM fast idle
4.5 Litre with Manual Transmission, 6.75:1 Compression Ratio: 375 RPM idle, 950 RPM fast idle
4.5 Litre with Automatic Transmission, 6.4 & 6.75:1 Compression Ratio: idle 400 RPM in Neutral, 375RPM in gear at standstill,
fast idle 950 RPM in Neutral.
4.9 Litre with Automatic Transmission, 6.6:1 Compression Ratio: idle 400 RPM in Neutral, 375RPM in gear at standstill,
fast idle 950 RPM in Neutral.
4.9 Litre with Automatic Transmission, 8.0:1 Compression Ratio: idle 400-425 RPM in Neutral, 375RPM in gear at standstill,
fast idle 950 RPM in Neutral.
• Engines equipped with automatic transmissions require idle speeds to be optimised in Neutral consistent with smooth running.
• Engines with a single carburettor will usually run satisfactorily at 25 RPM lower than those with twin S.U. carburettors.
Page 3
Section 2 -United Kingdom and European specification 1965 to 1986. Also, ignition timing conversion chart
for 95 RON unleaded fuel:
See Table 2
Items marked with an * require a modified distributor vacuum advance signal hose and throttle/jack damper hoses
(see Workshop Manual TSD 4200, pages K5-1 to K5-18).
See Table 3
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the engine number.
Items marked with an * require a modified distributor vacuum advance signal hose and throttle/jack damper hoses (see Workshop
Manual TSD 4200, pages K5-1 to K5-18).
(refer to table: 4736e14e_0003)
Section 3 - American specifications 1967 to 1986
(refer to table: 4736e14e_0004)
Note:
This applies to all Emission control cars built between 1967 to 1972.
• Stage 1 - All cars prior to car serial number SRX 9001
• Stage 2 - a} Cars other than Long Wheelbase Car serial number SRX 9001 up to SRA 12030 Including SRX 12046 and SRX
12062 Excluding DRA 11808, DRA 11809, DRA 11839, DRA 11841, DRA 11875, DRA 11879, DRA 11880, DRA 11908, DRA
11912, DRA 11935, DRA 11936, CRA 11941, DRA 12018, DRA 12022, CRA 12025, DRA 12026
• Stage 2 - b) Long Wheelbase cars Car serial number LRX 9069 up to LRA 11922 Including LRX 11923
• Stage 3 - a) Cars other than Long Wheelbase Car serial number SRA 12030 onwards Including DRA 11808, DRA 11809, DRA
11839, DRA 11841, DRA 11875, DRA 11879, DRA 11880, DRA 11908, DRA 11912, DRA 11935, DRA 11936, CRA 11941, DRA
12018, DRA 12022, CRA 12025, DRA 12026 Excluding SRX 12046 and SRX 12062
• Stage 3 - b) Long Wheelbase cars Car serial number LRA 11922 onwards Excluding LRX 11923
Note:
Remove the air intake and blank off the hot idle compensator feed drilling; replace the air intake. Remove the inlet hose from the air
injection system pressure relief valve and fit a blank over the valve (a suitable blank may be produced from a short length of rubber
hose with one end plugged). Disconnect the EGR cut-off solenoid to the carburetter signal hose at the solenoid; blank off the hose.
Unscrew and remove the pressure tapping cap from the weakening device.
Note:
Remove the air intake and blank off the hot idle compensator feed drilling; replace the air intake. Remove the air inlet hose from the
air injection system pressure relief valve and fit a blank over the valve. Disconnect the EGR valve signal pipe at the cut-off solenoid
'Y' piece and blank off the open 'Y' piece hose connection. Unscrew and remove the pressure tapping cap from the weakening
device.
Note:
Unscrew and remove the exhaust pipe blanking plug situated adjacent to the oxygen sensor. Fit the exhaust gas sampling adapter
RH 9611 into the pipe. Connect a suitable Co meter to the exhaust sample probe. Switch the ACU off. Open the oil filler cap and
disconnect the purge line at the restrictor, leave the restrictor fitted into the hose to the engine. Disconnect the oxygen sensor cable
situated in the rear left-hand corner of the engine compartment.
Section 4 - Australian specifications 1976 to 1986
(refer to table: 4736e14e_0005)
Note:
Remove the air intake and blank off the hot idle compensator feed drilling; replace the air intake. Remove the inlet hose from the air
injection system pressure relief valve and fit a blank over the valve (a suitable blank may be produced from a short length of rubber
hose with one end plugged). Disconnect the EGR cut-off solenoid to the carburetter signal hose at the solenoid; blank off the hose.
Unscrew and remove the pressure tapping cap from the weakening device.
Note:
Remove the air intake and blank off the hot idle compensator feed drilling; replace the air intake. Remove the air inlet hose from the
air diverter valve and fit a blank over the valve. Disconnect the EGR valve signal hose at the solenoid; blank off the hose. Unscrew
and remove the pressure tapping cap from the weakening device.
Note:
Remove the air intake and blank off the hot idle compensator feed drilling; replace the air intake. Remove the air inlet hose from the
air diverter valve and fit a blank over the valve. Disconnect the EGR valve signal pipe at the cut-off solenoid 'Y' piece and blank off
the open 'Y' piece hose connection. Unscrew and remove the pressure tapping cap from the weakening device.
Note:
Unscrew and remove the exhaust pipe blanking plug situated adjacent to the oxygen sensor. Fit the exhaust gas sampling adapter
RH 9611 into the pipe. Connect a suitable Co meter to the exhaust sample probe. Switch the ACU off. Open the oil filler cap and
disconnect the purge line at the restrictor, leave the restrictor fitted into the hose to the engine. Disconnect the oxygen sensor cable
situated in the rear left-hand corner of the engine compartment.
Section 5 - Japanese specifications 1976 to 1986
(refer to table: 4736e14e_0006)
Note:
Remove the air intake and blank off the hot idle compensator feed drilling; replace the air intake. Remove the inlet hose from the air
injection system pressure relief valve and fit a blank over the valve (a suitable blank may be produced from a short length of rubber
hose with one end plugged). Disconnect the EGR cut-off solenoid to the carburetter signal hose at the solenoid; blank off the hose.
Unscrew and remove the pressure tapping cap from the weakening device.
See Table 4
See Table 5
See Table 6
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Note:
Remove the air intake and blank off the hot idle compensator feed drilling; replace the air intake. Remove the air inlet hose from the
air injection system pressure relief valve and fit a blank over the valve. Disconnect the EHR valve signal pipe at the cut-off solenoid
'Y' piece and blank off the open 'Y' piece hose connection. Unscrew and remove the pressure tapping cap from the weakening
device.
Note:
Unscrew and remove the exhaust pipe blanking plug situated adjacent to the oxygen sensor. Fit the exhaust gas sampling adapter
RH 9611 into the pipe. Connect a suitable Co meter to the exhaust sample probe. Switch the ACU off. Open the oil filler cap and
disconnect the purge line at the restrictor, leave the restrictor fitted into the hose to the engine. Disconnect the oxygen sensor cable
situated in the rear left-hand corner of the engine compartment.
Section 6 - Middle East specifications 1984 to 1986
Model type Rev/min Timing Fuel Co idle
speed
Co setting procedure Fast idle
speed
1984 to 1986
Naturally
aspirated motor
cars only
Static 5° btdc 2.5 - 3.5%
650 rev/min
Remove air intake,
blank off idle
800 - 900
rev/min on
2100 20° btdc Disconnect vacuum compensator drilling
and
top of cam
engine hot
650 2-6° btdc advance hose and
blank off.
replace the intake
Remove pressure
tapping cap from
650 18-26° btdc Disconnect
vacuum manifold
to air intake sensor
hose at sensor,
connect this hose
(using an
additional length of
hose) to distributor
vacuum capsule.
weakening device
Section 7 - All naturally aspirated cars fitted with the Bosch K fuel system (VIN 20001 to 27799)
(refer to table: 4736e14e_0008)
Section 8 - All Turbocharged cars fitted with the Bosch KE fuel system (VIN 20001 to 23935)
Model type Co% idle speed Timing Fuel Co setting procedure
All Bentley Turbo R cars
from VIN 20001 to 23935
equipped with Bosch KE2
Jetronic fuel system 1987
and 1988 model year.
0.8% to 1.0% at 580
rev/min
See Figs. E14-1,
E14-2, and E14-3
97 RON Set Co with the ACU switched on
and the crankcase completely
sealed.
Section 9 - All cars fitted with the Bosch Motronic fuel systems - Post Turbo (VIN 24519) and naturally
aspirated cars (VIN 30001)
Model type Co% idle speed Timing Fuel Co setting procedure
All Turbocharged motor cars post
VIN 24519 equipped with the
Bosch Motronic fuel system.
1989 onwards including VIN
23155, 23211, 23212, and 23218.
0.9% ± 0.1% at
580 rev/min ± 20
rev/min
6° ± 1° btdc at 580 ± 20
rev/min.The current to the
EHA should be stable at
OmA ± 0.5 mA
97 RON to
95 RON
Set the Co with the ACU
switched on and the crankcase
completely sealed. Note: If the
motor car is fitted with purge
control, disconnect the purge
hose from the inlet manifold and
blank off the manifold tapping.
All catalyst equipped Turbocharged motor cars post VIN
24519 equipped with Bosch
Motronic fuel system. 1989
onwards including VIN 23214
and 23219.
0.9% ± 0.1% at
580 rev/min ± 20
rev/min
8° ± 1° btdc at 580 ± 20
rev/min.The current to the
EHA should be oscillating
about a median of OmA.
95 RON Set the Co with the ACU
switched on, the crankcase
completely sealed and the EHA
disconnected. Also, disconnect
the purge hose from the inlet
manifold and blank off the
manifold tapping.
Per/MT
see Fig. E14-1
001650
See Table 8
rht September 2008
E14-1 Ignition timing graph - Idle: See Table 9
E14-2 Ignition timing graph - Part load: See Table 10
E14-3 Ignition timing graph - Full load: See Table 11
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Model type Rev/min Timing Fuel Co idle
speed
Co setting procedure Fast idle
speed
1965 to 1976. All cars
produced before car
serial number SRH 8742
Static 500 TDC 3° btdc Twin point
distributor. Contact
points set to 0.014 in
to 0.016 in
99 RON 4 - 4.5% 600
rev/min
See TSD 2476 pages
K20 to K21
1850 | rev/min
1967 to 1976. All cars
produced between car
serial number SRH
8742 and SRD 22117
Static 800 TDC 5° btdc Single
point distributor. Set
dwell angle at idle to
26°to 28°
99 RON 4 - 4.5% 600
rev/min
See TSD 2476 pages
K23 to K25
1850 |
rev/min | |
Static 800 TDC 5° atdc 97 RON 4 - 4.5% 600
rev/min
See TSD 2476 pages
K23 to K25
1850 | rev/min
Static 800 7° atdc 2° atdc 94 RON 4 - 4.5% 600
rev/min
See TSD 2476 pages
K23 to K25
1850 rev/min|
1967 to 1976. All cars
produced after car serial
number SRD 22118
1200 15° btdc 97 Ron 4 - 4.5% 600
rev/min
See TSD 2476 pages
K23 to K25
1850 | rev/min
1976 to 1981. Corniche
and Camargue cars with
1850 25° btdc. Distributor
vacuum
97 RON 0.2 - 0.5%
650 rev/min
ACU switched off and
air cleaner/
1850 | rev/min
Solex 4A1 carburetters
(see note 3)
1650 20° btdc advance
signal
94 RON silencer fitted. See
TSD 4200 pages
|
2350* 20° btdc. hose
disconn- ected and
blanked off
90 RON 2.5 - 3% K5-1 to K5-22 |
1976 to 1981. Corniche
and Camargue cars with
1850 25° Distributor btdc
vacuum
97 RON 0.2 - 0.5%
650 rev/min
ACU switched off and
air cleaner/
1850 | rev/min
Solex 4A1 carburetters
(see note 4)
1650 advance signal hose 94 RON silencer fitted. See
TSD 4200 pages
2100* disconnected and
blanked off
90 RON 2.5 - 3% 650
rev/min
K5-1 to K5-22
1976 to 1981. All Silver
Shadow II, Silver Wraith
II
1300 25° Distributor btdc
vacuum
97 RON 1 - 4% 650
rev/min
ACU switched off 850
and air cleaner
- 900 |
rev/min.
and Bentley T2 from car
serial number SRF
30001
2050 25° advance btdc
signal hose
94 RON silencer fitt On ip of | cam
equipped with 2 SU HIF
7 carburetters
2800 25° disconnected btdc
and blanked off
90 RON eng ne hot |
1976 to 1981. All Silver
Shadow II, Silver Wraith
II
2200 20° Distributor btdc
vacuum
97 RON 1 - 4% 650
rev/min
ACU switched off 850
and air cleaner/
- 900 | rev/min
and Bentley T2 from car
serial number SRF
30001
2200 20° advance btdc
signal hose
94 RON silencer fitted. On ip of | cam
with suffix letter 'B' at
the end of the serial
number
2200 17° disconnected btdc
and blanked off
90 RON eng ne hot |
1976 to 1981. All
Corniche and
Camargue cars with
1200 15° Distributor btdc
vacuum
97 RON 0.8 - 1.2%
600 rev/min
ACU switched off 185
and air cleaner/
| rev/min
the Solex 4A1
carburetter (see note 2)
1700 15° advance btdc
signal hose
94 RON silencer fitted. See
TSD 4200, pages
|
2200* 15° disconnected btdc
and blanked off
90 RON 2.5 - 3% 600
rev/min
K5-1 to K5-22 |
1981 to 1986. All Silver
Spirit, Silver Spur and
Static 5° btdc 97 RON 2.5 - 3.5%
650 rev/min
|
Bentley Mulsanne cars 2200 25° Hose from btdc
vacuum
Remove air intake 850
and blank off hot
-900 | rev/min
650 6-10° capsule btdc
disconnected and
blanked off
idle compensator On
drilling, replace air
intake. Unscrew and
remove the pressure
ip of | cam
engine hot
Table 2
tapping
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tapping
650 22-30° Hose from btdc
vacuum manifold to air
intake sensor,
disconnected at sensor
and connected to
vacuum capsule using
additional length of
hose
cap from weakening
device
|
1981 to 1986. All Silver
Spirit, Silver Spur and
2200 21° Hose from btdc
vacuum
94 RON 2.5 - 3.5%
650 rev/min
Remove air intake 850
and blank off hot
- 900 | rev/min
Bentley Mulsanne cars 650 2-6° capsule btdc
disconnected and
blanked off
idle compensator On
drilling, replace air
intake. Unscrew and
remove the pressure
tapping
ip of | engine
hot
650 10-18° Hose from
vacuum manifold to air
intake sensor
disconnected at sensor
and connected to
vacuum capsule using
additional length of hos
cap from weakening
device
|
1981 to 1986. All Silver
Spirit, Silver Spur and
2200 17° Hose from btdc
vacuum
90 RON 2.5 - 3.5%
650 rev/min
850 - 900 | rev/min
Bentley Mulsanne cars 650 2° capsule btdc
disconnected to 2° and
blanked atdc off
Remove air intake On
and blank off hot idle
compensator eng
drilling, replace air
intake. Unscrew
ip of | cam ne
hot |
650 10-18° Hose from
vacuum manifold to air
intake sensor,
disconnected at sensor
and connected to
vacuum capsule using
additional length of hos
and remove the
pressure tapping cap
from weakening device
|
1981 to 1986. All
Corniche and
Continental cars
Static 5° btdc 0.2 - 0.5%
650 rev/min
ACU switched off 185
and air cleaner/
| rev/min
2100 20° Hose from btdc
vacuum
97 RON silencer fitted |
2100 20° capsule btdc
disconnected
94 RON |
2100 16° and blanked btdc
off
90 RON |
1982 to 1986
Turbocharged motor
cars
Static 4° ± .5° Basic setting
btdc
97 RON 0.1 - 0.3%
650 rev/min
Remove air chest
cover and switch
1850 rev/min
650-700 4° ± .5° Vacuum hose
btdc to distributo
capsule disconnected
and hose to
carburetter blanked
off the ACU. Do not
adjust the Co if
exhaust extraction
equipment has been
used recently as a
false reading will occur
650-700 4° ± .5° Carburetter
btdc throttle jack
damper retracted and
hose clamped
Ensure carburetter is
balanced before and
after setting Co%
2100 - 17° Approach
2200 this speed from a
higher figure
2100 - 22° ± 2° Apply a
2200 further minimum of
advance 457,2mm Hg
(ie 17°+ (18.0 in Hg)
22°= 39° to the btdc)
distributor capsule
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TableA United Kingdom history of
highest available
Research octane number Approximate number of degrees retardation from
original settings for naturally aspirated vehicle
built during period indicated
Pre1917 50 0
1922 56 0
1928 57 0
1931 76 0
1932 76 0
1935 81 0
1939 81 0
1939-1946 74 0
1953 92 0
1954 93 0
1955-1957 95 0
1958-1959 97 2 to 4
1960 98 3 to 6
1961-1970 99 4 to 8
1971-1973 100 5 to 10
1974 99 4 to 8
1975 to date 97 2 to 4
1989 Onwards All Rolls-Royce and Bentley motor cars including
Turbo 'R' are capable of running either on 97 or
95 RON fuel. For information concerning engine
setting refer to the relevant Workshop Manual.
Table 3
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Model type Rev/min Timing Fuel Co idle
speed
Co setting
procedure
Fast idle speed
1967 to 1972.
Stage 1 Emission
cars (see note 1)
500 TDC 94 RON 5.5 - 6%
550 - 600
rev/min
See TSD 2476,
pages U37 to
U39
2000 rev/min
Stage 2 Emission
cars (see note 1)
Static 800 TDC 5° btdc Disconnect vacuum
pipe from vacuum
retard tap an and
blank off connection
on tap
94 RON 5.5 - 6%
600 rev/min
See TSD 2476,
pages U40 to
U42
2000 rev/min
Stage 3 Emission
cars (see note 1)
Static 800 TDC 5° Disconnect vacuum
pipe from vacuum
retard tap an blank
off connection on tap
94 RON 5.5 - 6%
600 rev/min
See TSD 2476,
pages U43 to
U45
2000 rev/min
All 1973 cars fitted
with Emission
control equipment
Static 800 TDC 5° btdc 94 RON 5 - 5.5%
600 rev/min
See TSD 2476,
pages U32 to
U34
2000 rev/min
All 1974 cars.
These cars have
the letter 'C' as the
last letter of the car
serial number
Static 1500 TDC 15°
btdc
With vacuum retard
disconnected
94 RON 4.5 - 5%
600 rev/min
See TSD 2476,
page U699 (Part
2)
2000 rev/min
All 1975 cars.
These cars have
the letter 'D' as the
last letter of the car
serial number
Static 1200 TDC 15°
btdc
94 RON 3.75 -
4.25% 600
rev/min
See TSD 2476,
pages U105 to
U107 (Part 2)
1900-2100
rev/min
All 1976cars.
These cars have
the letter 'E' as the
last letter of the car
serial number
Static 1200 9° btdc 15°
btdc
Disconnect feed
hose at vacuum
advance capsule,
blank off fee hose
94 RON 3.75 -
4.25% 600
rev/min
See TSD 2476,
pages U182 to
U185 (Part 2)
1900-2100
rev/min
All 1977/1978 cars. Static 1200
650
9° btdc 15°
btdc 7 - 13°
btdc
Except California.
Disconnect hose at
distributor vacuum
advance capsule
and blank off feed
hose
94 RON 1 - 4% 650
rev/min
Note: Do
not attempt
to adjust th
Co% if it is
within 2.5 t
4%
See Note 5 and
TSD 4200,
pages U5-11
and U5-12
1850 rev/min
650 Approx 19°
btdc
Disconnect hose
from vacuum
manifold to purge
line restrictor at
restrictor en
Connect suitable
hose between this
hose and distributor
vacuum capsule
.
All 1979/1980 cars Static 9° btdc Except California 94 RON 1 -4% 650
rev/min
See TSD 4200
pages U5-11 and
1850 rev/min
1200 15° btdc Disconnect hose at No attempt U5-12
650 7-13° btdc distributor vacuum
advance capsule
and blank off feed
hose
should be
made to
adjust the
Co% if it is
within 2.5 t
4%
See Note 8
650 Approx. 19°
btdc
Disconnect hose
from vacuum
manifold to purge
line restrictor at
restrictor en
Connect suitable
.
Table 4
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hose between this
hose and distributor
vacuum capsule
1980 Californian
specification
equipped
Static 3° btdc Disconnect hose at
with Bosch fuel
injection cable
1450 14-16° btdc distributor vacuum.
Retard solenoid and
fit a blank t the
solenoid valve
connection (see
TSD 4200 pages
U6-1 and U6-2
94 RON 0.5 - 0.7%
650 rev/min
See TSD 4200
pages U2-56
and U2-57
Not applicable
1981 to 1986 North
American
specification
equipped with
Bosch fuel injection
Static 3° btdc Disconnect vacuum
advance hose from
distributor side of
vacuum retard
solenoid and fit a
blank t
See TSD 4400
pages U2-59 to
U2-60
1450 14-16° btdc the solenoid valve
connection.
Disconnect vacuum
advance hose from
on top o the throttle
housing connection
See TSD 4400 page
U7-2
94 RON 0.5 - 0.7%
650 rev/min
See Note 9 Not applicable
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Model type Rev/min Timing Fuel Co idle
speed
Co setting
procedure
Fast idle speed
1976 Silver
Shadow, Silver
Shadow Long
Wheelbase,
Static 4° btdc 91 RON Min 5 - 5.5%
600 rev/min
See TSD 2476,
pages U32 to
U34
Bentley T,
Corniche and
Camargue
1600 15° btdc Disconnect feed
hose at vacuum
advance capsule;
blank off feed
hose
95 RON
whereve
possibl
1850 rev/min
1977/1978 Silver
Shadow II, Silver
Wraith II, Bentley
T2,
Static 9° btdc 91 RON Min 850 - 900
rev/min
Corniche and
Camargue
1200 15° btdc 95 RON
whereve
1-4% 650
rev/min
See Note 5 on tip of cam
650 7-13° btdc possibl engine hot
1979 Silver
Shadow II, Silver
Wraith II, Bentley
T2
Static 9° btdc 91 RON Min 850-900 rev/min
Corniche and
Camargue
1200 15° btdc 95 RON
whereve
1-4% 650
rev/min
See Note 6 on tip of cam
650 7-13° btdc possibl engine hot
1980 Silver Spirit,
Silver Spur,
Bentley Mulsanne,
Static 9° btdc 91 RON Min 850-900 rev/min
Corniche and
Camargue
1200 15° btdc 95 RON
whereve
1 - 4% 650
rev/min
See Note 7 on tip of cam
650 7-13° btdc possibl engine hot
1981 to 1986
Silver Spirit, Silver
Spur, Bentley
Static 5° btdc 91 RON Min 0.5 - 0.7%
650 rev/min
850-900 rev/min
Mulsanne,
Corniche and
Camargue
2000 25° btdc 95 RON
whereve
See Note 7 on tip of cam
650 5-11° btdc possibl engine hot
1986 All cars
except Silver
Spirit, Silver Spur,
Bentley
Static 3° btdc 91 RON Min 0.5 - 0.7%
650 rev/min
Not
Mulsanne, Turbo
and Corniche
1450 14-16° btdc Disconnect
vacuum advance
hose from on top
of the throttle
housing
connection and
blank off the
throttle housing
connection
95 RON
whereve
possibl
ee Note 9 applicable
Table 5
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(OID = <1003599_1_1_1> UID = <8082> Dataset = <TSD 6000 1990 - 2000 [English]>)
Model type Rev/min Timing Fuel Co idle
speed
Co setting
procedure
Fast idle speed
1975 Silver
Shadow, Silver
Shadow Long
Wheelbase,
Static TDC 91 RON Min 3 - 4% 600
rev/min
See TSD 2476
pages U32 to
U34
1850 rev/min
Bentley T,
Corniche and
Camargue btdc
1600 15° 95 RON
wherever
possible
1976 Silver
Shadow, Silver
Shadow Long
Wheelbase,
Static 4° btdc 91 RON Min 5 - 5.5%
600 rev/min
See TSD 2476
pages U32 to
U34
1850 rev/min
Bentley T,
Corniche and
Camargue
1600 15° btdc Disconnect feed
hose at vacuum
advance capsule,
blank off feed
hose
95 RON
wherever
possible
1977 to 1979
Silver Shadow II,
Silver Wraith II,
Static 9° btdc 91 RON Min 800 - 900
rev/min
Corniche and
Camargue
1200 15° btdc 95 RON
wherever
1 - 4% 650
rev/min
See Note 5 on tip of cam
650 7-13° btdc possible engine hot
1980 Silver Spirit,
Silver Spur,
Bentley Mulsanne
Static 9° btdc 91 RON Min 800 - 900
rev/min
and Camargue 1200 15° btdc 95 RON
wherever
1 - 4% 650
rev/min
See Note 8 on tip of cam
650 7-13° btdc possible engine hot
1981 to 1986
Silver Spirit, Silver
Spur, Corniche,
Static 5° btdc Disconnect
vacuum
91 RON Min 0.5 - 0.7%
650 rev/min
Camargue,
Bentley Mulsanne
and Continental
1450 14-16° btdc advance hose
from distributor
side of vacuum
retard solenoid
and fit a blank to
the solenoid
valve connection.
Disconnect
vacuum advance
hose from on top
of the throttle
housing
connection and
blank off the
throttle housing
connection
95 RON
wherever
possible
See Note 9 Not applicable
Table 6
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23/09/08 TSD 6000 1990 - 2000 [English] / Page 1
(OID = <1003601_1_1_1> UID = <8083> Dataset = <TSD 6000 1990 - 2000 [English]>)
Model type Co idle speed Rev/min Timing Remarks
All naturally aspirated
Rolls-Royce and Bentley motor
cars from VIN 20001
0.6% - to 0.7% at
580
Static 6° btdc Initial static setting. A1 piston
approaching tdc; distributor
rotor arm on A1 firing position
to 27799 conforming to a
European specification fitted
with the Bosch K Jetronic fuel
system.
rev/min 2000 30° btdc + 1° Vacuum advance hose
disconnected and exposed
hose leading to throttle body
blanked off. Approach engine
rev/min from a higher speed
Note: Oil filler cap should be
open when checking exhaust
Co%.
580 (idle speed) 2° btdc to 10° btdc Air conditioning function switch
in LOW position. Ensure that
the compressor clutch is in the
engaged position and record
ignition timing figure.
580 (idle speed) 12° btdc to 16° btdc
further advanced than
the figure recorded
above.
Initial vacuum of 635 mm Hg
(25 in Hg) applied, then reduce
to 508 mm Hg (20 in Hg).
Ensure that the compressor
clutch is in the engaged
position when taking ignition
timing figure. Ignition timing
figure should be between 14°
btdc and 26° btdc.
All naturally aspirated
Rolls-Royce and Bentley motor
cars from VIN 20001
0.6% - to 0.7% at
580
Static 1° btdc Initial static setting. A1 piston
approaching tdc; distributor
rotor arm on A1 firing position
to 27799 conforming to a
Middle East and Taiwan
specification. Also, Swiss
specification from 1988 fitted
with the Bosch K Jetronic fuel
system.
rev/min 2000 25° btdc ± 1° (Middle
East) 30° btdc ± 1°
(Taiwan)
Vacuum advance hose
disconnected and exposed
hose leading to throttle body
blanked off. Approach engine
rev/min from a higher speed
580 (idle speed) 3° atdc to 5° btdc
(Middle East)
Air conditioning function switch
in LOW position. Ensure that
the compressor clutch is in the
engaged position and record
ignition timing figure
2° btdc to 10° btdc
(Taiwan)
580 (idle speed) 12° btdc to 16° btdc
further advanced than
the figure recorded
above
Initial vacuum of 635 mm Hg
(25 in Hg) applied, then reduce
to 508 mm Hg (20 in Hg).
Ensure that the compressor
clutch is in the engaged
position when taking ignition
timing figure. Ignition timing
figure should be between 9°
btdc and 21° btdc.
All naturally aspirated
Rolls-Royce and Bentley motor
cars from VIN 20001
0.5% - to 0.7% at
580
Static 10° btdc Initial static setting. A1 piston
approaching tdc; distributor
rotor arm on A1 firing position
to 27799 conforming to a North
American, Japanese, and
Australian specification. Also,
Swiss specification from 1988
fitted with the
rev/min 1400±25 20° btdc ± 1° Vacuum advance hose
disconnected and exposed
hose leading to throttle body
blanked off. Approach engine
rev/min from a higher speed
Bosch K Jetronic fuel system. 580 (idle speed) 6° btdc to 14° btdc Air conditioning function switch
in LOW position. Ensure that
the compressor clutch is in the
engaged position and record
ignition timing figure
Note: Oil filler cap should be
open when checking exhaust
Co%.
|
Table 8
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(OID = <1003601_1_1_1> UID = <8083> Dataset = <TSD 6000 1990 - 2000 [English]>)
80 (idle speed) 0° btdc to 14° btdc
further advanced than
the figure recorded
above
nitial vacuum of 635 mm Hg
(25 in Hg) applied, | then
reduce to 508 mm Hg (20 in
Hg). Ensure that the
compressor clutch is in the
engaged position when taking
ignition timing figure. Ignition
timing figure should be
between 16° btdc and 28° btdc.
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23/09/08 TSD 6000 1990 - 2000 [English] / A guide to engine settings - Post 1946 Page 1 (OID = <1643_1_1_1> UID = <1642>)
Table 9
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23/09/08 TSD 6000 1990 - 2000 [English] / A guide to engine settings - Post 1946 Page 1 (OID = <1644_1_1_1> UID = <1643>)
Table 10
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23/09/08 TSD 6000 1990 - 2000 [English] / A guide to engine settings - Post 1946 Page 1 (OID = <1645_1_1_1> UID = <1644>)
Table 11
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