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Registered
Join Date: Dec 2003
Location: Silver Spring, MD 20904
Posts: 435
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Ralph,
looking through my notes, my heads came out to 92cc. My J&E domes were 43cc, and I ran the clearance right at 1mm which gave me a CR of ~10.7:1. I remember the tighest spot was NOT at the very edge, but just on the inside of the chamfer of the 95mm part.
FWIW, at these settings a 1cc head or piston change makes a 0.17:1 CR change. A 0.1mm clearance change makes a 0.13:1 CR change.
SMD
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