Ignition timing
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Ignition timing
Hi out there in cyberspace,
Can anyone tell me what the ignition timing should be on a Jaguar v12 engine, serial no. 7P44098HB, it was made in 1981 as far as I can tell. It seems to be pre HE but has HE type fuel rails. Any help would be greatly appreciated. Thanks
Can anyone tell me what the ignition timing should be on a Jaguar v12 engine, serial no. 7P44098HB, it was made in 1981 as far as I can tell. It seems to be pre HE but has HE type fuel rails. Any help would be greatly appreciated. Thanks
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RE: Ignition timing
All are with no vacuum applied. Static figure is target for initial setting up. Timing should then be set to higher speed figure approximating to the peak torque regime.
V12 E type (CD carbs) 9:1 compression.
750 r.p.m. (static) 12 degrees BTDC
3500 r.p.m. 31 degrees BTDC
Bosch Lucas EFI, 9:1 compression, 1975-80.
750 r.p.m. (static) 10 degrees BTDC
3000 r.p.m. 29 degrees BTDC
Lucas 6CU EFI, pre-HE 10:1 compression, 1980-81.
750 r.p.m. (static) 5 degrees BTDC
3000 r.p.m. 24 degrees BTDC
i hope this helsp
V12 E type (CD carbs) 9:1 compression.
750 r.p.m. (static) 12 degrees BTDC
3500 r.p.m. 31 degrees BTDC
Bosch Lucas EFI, 9:1 compression, 1975-80.
750 r.p.m. (static) 10 degrees BTDC
3000 r.p.m. 29 degrees BTDC
Lucas 6CU EFI, pre-HE 10:1 compression, 1980-81.
750 r.p.m. (static) 5 degrees BTDC
3000 r.p.m. 24 degrees BTDC
i hope this helsp
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