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How Many Teeth...

944 man

944 man

Active member
...on my early 944's crank speed pickup: does anyone know or can they point me in the right direction please?
 
ORIGINAL: 944 man

Thank you. I am assuming that it is one hundred and thirty teeth and one tooth missing?
Click to expand...

There is a stud in the flywheel that the other sensor picks up at 58ish degrees BTDC .
little fuzzy on this but fairly sure.
 
That sounds right for the Turbo, but not knowing the Lux I don't know how it might differ. I thought there were 2 studs (grub screws) rather than one, but I could be wrong.
 
There is definately not a tooth missing as it uses the starter ring gear. this is picked up by one sensor and the other sensor picks up a single stud.
Megasquirt (I'm guessing that's why you ask) will apparently work with this but needs an extra sensor input and has trouble with the 130 teeth over certain revs.
I have the microsquirt version in my shed, have fitted the wideband and map sensor but gone no further due to the car being quite demanding lately, clutch failiure etc, back injury and work.
I'm pretty convinced it needs a 36 tooth trigger wheel from whats been posted elsewhere. I have a trigger wheel thats supposed to fit the car but its in the shed too, will look at fitment when I re-seal the front end.
 
The S2 has a tooth missing on the ring gear so that isn't an issue, but with the grub screw you don't need it.

If MS needs another sensor that will be the reference one on the cam side that runs at half crank speed that I said in the AFM thread I expect it will need.
 
ORIGINAL: JamesO
Megasquirt (I'm guessing that's why you ask) will apparently work with this but needs an extra sensor input and has trouble with the 130 teeth over certain revs.
Click to expand...

It is indeed. Sorry for my tardy reply, but Ive been away. In theory the OEM Motronic setup only needs a new temperature sensor, in practice: we will see...

Simon
 
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