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ted von Kampen · Posted: Thu Mar 03, 2022 9:09 am Post subject: Timing belt shifting

Since the 924 2.0 n/a is a non-interference engine has anyone attempted to advance or retard the cam timing by shifting the belt one tooth either way?
Any harm to a standard engine?

Fifty50Plus · Posted: Thu Mar 03, 2022 10:01 am Post subject:

You can do either. If you advance it one tooth, you move the torque curve of the cam down lower in the RPM range. If you retard it one tooth, you move the torque curve up into the higher RPM range (I don't advise this since this engine doesn't rev very well anyway).
Do a self test and drive it as is. Then advance the cam one tooth and drive it again. Hopefully you will note a difference in around-town response.
_________________
1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA

ted von Kampen · Posted: Thu Mar 03, 2022 3:27 pm Post subject: Cam timing

Thanks for the info. My 1981 does not accelerate very well so I am looking for something to get a little more out of it. To advance it you go one tooth clockwise or CCW when facing the cam from the front. I can probably figure that out but thought I would ask. ---ted

morghen · Joined: 21 Jan 2005 Posts: 9095 Location: Romania

anthonimartini · Joined: 17 Feb 2020 Posts: 240 Location: portland oregon

just a note, if you adjust your cam timing you will have to reset your ignition timing.
_________________
ive saved alot of 924's
current:
79 MochaSchwartz 931
83 944
87 924S
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formerly known as turbellion, lost password.

Fifty50Plus · Posted: Fri Mar 04, 2022 8:04 am Post subject:

Advance is clockwise as you look at the cam from in front of the car. And note what AntoniMartini said about checking your ignition timing.

BTW, If I had a running street NA, I'd do what Ciprian (Morghen) says.
_________________
1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA