Re: [alfa] 164 Motronic Cam Timing Mystery

[f.rastinejad@xxxxxxx]

Dennis,  The Motronic 164 crank pulley has a mark etched on it that lines up with a pointer on the front engine cover at TDC. Just look a bit harder! The reference sensor and the missing tooth are not intended for setting the crank timing.  -Farzan

-------------- Original message from Dio Genio : -------------- 
> Digesti: 
> 

> 
>> 
> In trying to learn as much about Motronic as much as 
> possible, I rotated the crank until the two cam 
> reference marks lined up with the cap marks, and CYL 
> #1 was at TDC, with both valves fully closed. I then 
> expected the "gap" in the tooth wheel to be directly 
> aligned with the magnetic sensor (which is located at 
> the 3 o'clock position when facing the crank pulley). 
> Much to my surprise...it was not lined up! Rather, the 
> "gap" was facing downwards at approximately 7 o'clock. 

> 
> I now wonder why this seemingly strange timing is so? 
> I also wonder how on Earth I am supposed to properly 
> re-time the cams if I remove them? Without the crank 
> pulley tooth "gap" referenced to anything, I'm bound 
> to get it wrong. 
> 
> There's something to be said for the old L-Jet with 
> it's TDC mark etched into the pulley! That made life 
> (and cam timing) rather easy! 
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