Theres nowhere realy decent to mount a trigger wheel onto the crank. So can i use a 72-2 trigger wheel mounted on to the cam shaft at the top? There is already some mounting holes where the dizzy rotor was attached to so i can utilize these. WOuld the wheel be too small? It would be about 100mm diameter (ive seen trigger wheels smaller but these have been 36-1 so wondering whether it would be ok for a 72-2?
Cams spin at twice the rate of the crank though
Isn't it half speed?
Can't see a reason why it wouldn't work.
Might be worth a try.
Can you not get a flywheel with trigger teeth from a different engine?
quote:
Originally posted by Steve G
Cams spin at twice the rate of the crank though
As for the 72-2 wheel on the cam or distributor drive, YES, that will work and EDIS would never know the difference. The only hurdle to jump with that is the finding a VR sensor that is capable of reading those small teeth AND still have a strong enough signal to the EDIS module for the module to interpret, especially at idle.
The onky problem is space for the trigger wheel and sensor, can the sensor be mounted end on to the wheel as opposed to perpendicular to it? Would
help with space ALOT
Cheers
Does your pulley have a damper built in or is it a solid pulley? It may be possible to turn up a spacer to fit inside the pulley to mount the toothed wheel onto before pinning when correctly positioned, would mean a longer bolt but that shouldn't be a problem. Is there another BMW engine that uses a toothed pulley that would fit? Can't remember offhand if that is the case.
well it does have a toothed pulley, but its not 36-1 and im using an edis system, the BMW one was 50 something, so id imagine all BMW ones were the same
Is it possible to weld up, grind smooth and recut the teeth in the pully.????
i did think that paul, but i would really be able to get it precise enough, i saw on trigger-wheels they had some "bargain" ones with surface defects for a tenner so think ill just go for one of them and save the time and effort.