Reply to "Longchamp +100 HP"

noquarterMember

In comparing my old heads with my new, I would like to know what compression ratio I'll get. I made a crude measurement on the new heads, 62cc, and "62cc" was stamped on it, not bad

I made a just as crude measurement on the old heads, approx 75cc. Pistons are slightly dished, with two "twirl"-notches I think. Does anybody know any specifics about my old heads, and my compression ratio before and with the new heads?

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1/18/145:46 AM

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