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jwasbury jwasbury is offline
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Join Date: Jan 2008
Location: Weehawken, NJ
Posts: 3,306
Quote:
Originally Posted by WERK I View Post
If you feel like it, try disconnecting vacuum ,(plugging vac line of course), set timing to 0* (Z1) and let it idle (approx 900-1000RPM) and notice if the exhaust glows at that setting. Connect vacuum line to distributor and with timing light see how much the timing jumps advanced.
The idle timing procedure for a '79 US spec car is with the vacuum line connected...10 degrees ATDC is the factory setting. The '78-'79 US distributor has vacuum retard...quite a lot of it actually. If he sets the idle timing to Z1 with the vacuum line disconnected, when he reconnects, I bet he ends up even more retarded than 10 degrees (assuming the distributor is original and functioning properly).
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Current: 1983 911 GT4 Race Car / 1999 Spec Miata / 2000 MB SL500 / 1998 MB E300TD / 1998 BMW R1100RT / 2016 KTM Duke 690
Past: 2009 997 Turbo Cab / 1979 930
Old 03-01-2010, 08:07 AM
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