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79 924 Ignition Timing

 
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chipschwarze  



Joined: 31 Jul 2007
Posts: 20
Location: Idaho

PostPosted: Tue Aug 14, 2007 3:38 am    Post subject: 79 924 Ignition Timing Reply with quote

My new toy is finally shifting, got it started and rna it for a few minutes. next time I tried to start it, nothing. I noticed that the timing belt was really sloppy and discovered the belt tightener was finger loose.

Are there any markings on the crank and cam that will allow me to easily get back onto the right timing? I know I wll need to using a timing light to get it right, but I just want to get on the right teeth.

Thanks,

chip
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Smoothie  



Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)

PostPosted: Tue Aug 14, 2007 3:54 am    Post subject: Reply with quote

The front crank pulley to oil pump pointer TDC line-up viewed from above (click for larger pic) -


and the cam sprocket TDC mark (the dot at that valley between two teeth) to valve cover pointer line-up -
Your flywheel should have a "0" for TDC that you can use as a more accurate double-check of the crankshafts' TDC position.
When tensioning the belt, rotate the tensioner counterclockwise [to tighten the belt, then tighten the bolt]. You should be able to twist the belt 90 degrees [with your fingers] at the midway point along its' longer side. If it flops it's too loose, if it screams it's too tight.
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'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox


Last edited by Smoothie on Tue Aug 14, 2007 6:14 am; edited 2 times in total
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chipschwarze  



Joined: 31 Jul 2007
Posts: 20
Location: Idaho

PostPosted: Tue Aug 14, 2007 4:53 am    Post subject: Reply with quote

Thanks for the help, I new there had to be an easy way to line things up without pulling plugs and valve cover to find tdc.
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