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Registered
Join Date: Apr 2000
Location: dana point, ca
Posts: 9
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78 SC timing question
78 SC has upgraded Euro pistons, raising compression fron 8.5 to 9.5. Should the timing be changed ? stock is 5 BTDC@1000 and 25@6000.
Any help is appreciated Steve larson 84 Cab |
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01-15-2002, 01:11 PM
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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You're in the ballpark; maybe 30 degrees @6000. I'd suggest putting it on a chassis dyno and check/adjust for near optimum advance throughout the rpm range; fuel mixture too. You want to maximize the ign. timing while staying away from borderline detonation under any condition (lugging doesn't count).
Sherwood Lee http://members.rennlist.org/911pcars |
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01-15-2002, 01:28 PM
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