Checking the timing
I am checking the timing on my 86 928, before I hook up the 32V'r ( thanks for loaning the tool Greg, should be finished real soon. ) this looks pretty good to me. Verified #1 @ TDC, just want to see what all of you think. Thanks Jack Davis Attachment 441897
Attachment 441898
Attachment 441898
Last edited by jacal128; Apr 22, 2012 at 10:24 PM.
Looks like your ready to install the 32V'r. both the cam wheels line up with the cam cover marks so you are at TDC #1 compression. just make sure the crank pointer is dead on the 0 mark. if you are off at the crank you cam timing will be correspondingly out.
If you make any changes let us know how it effects the performance.
If you make any changes let us know how it effects the performance.
Put the 32V'r on both sides and they are dead on 0 degrees. I guess this part went well on the TB and WP replace. Now to chase down why it is running so rich. Thanks Jack Davis
Attachment 441914 Attachment 441913
Attachment 441914 Attachment 441913
Last edited by jacal128; Apr 22, 2012 at 10:24 PM.
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Too bad we can't average our mixtures I've got an extreme lean issue with mine at the moment.
RE. rich running: check for gas at the FPR and damper vacuum ports. Also check that the return hose from the FPR isn't kinked/collapsed (routed improperly or replacement hose too long).
If the engine were hot, then zero/zero would be perfect. If the engine is cold, then the 1-4 side would be better off at two retard. It's a pain to adjust retard, though, so 2° may not be worth it.
The belt is running at the front of the 1-4 gear? May be a problem developing? (The belt's normal position is 2-3mm back.) IIRC, overly high tension can do this too.
If the engine were hot, then zero/zero would be perfect. If the engine is cold, then the 1-4 side would be better off at two retard. It's a pain to adjust retard, though, so 2° may not be worth it.
The belt is running at the front of the 1-4 gear? May be a problem developing? (The belt's normal position is 2-3mm back.) IIRC, overly high tension can do this too.
This car apparently tracks a little to the front, don't know if its a problem developing or not. Attachment 444207
Attachment 444208
Attachment 444208
Last edited by jacal128; Apr 22, 2012 at 10:24 PM.



