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356-930 356-930 is offline
Acceleration Junkie
Join Date: Aug 2007
Location: Laguna Beach, CA
Posts: 263
Originally Posted by timc View Post
Chris, Are you saying to set his timing at 36 deg at 4k instead of 26?? Can he safely do that with a stock engine without getting detonation?
Yes, set timing at 36 instead of 26.
It's not necessarily safe. That's why I recommended Alan flog it up to boost. No danger to the engine there.
I run my 79-930 engine with 38-deg/4000 on the street, pull timing out to 29-deg at 1-bar with a stock distributor 5-deg retard supplemented by a boost controlled retard. At stock timing, my engine is helpless when not in boost. With 12-deg extra timing at low rpm, engine behaves well.
I believe RarlyL8 Brian has it right. The early 930's are simply dogs when not in boost. What does the turbocharger add? 100-HP? Pull 100Hp out of a normally aspirated engine with 7:1 compression and see how it performs under 3k-rpm.
Old 06-19-2008, 09:55 AM
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