07-11-2002, 06:20 AM
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CC Member
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Join Date: Mar 1999
Location: Murrysville, PA, USA,
Posts: 33
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Not Ranked
Jeb, MrFixit;
The old heads were iron, 64 cc combustion chamber, intake runner volume 135cc.
New heads are aluminum, 60 cc combustion chamber, intake runner volume 171cc.
My big concern with the advanced timing is detonation due to the high boost from the supercharger. I am intercooled but detonation will still destroy the motor, if I do not over-rev it first.
I changed the timing table before so the total advance was not to great at high RPM. Adding another 8 degrees advance, (from 10 to 18), to the base makes my total advance 8 degrees more. I guess as long as it does not detonate, I should be okay. I could always modify the timing advance table at high rpm which would be high boost so it is not so great. I hate to do this as I will loose power at high rpm.
Fred
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