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Question, when you had the piston at TDC then lowered it ( measured amount) to find the dome volume, did you add in the piston deck height into the amount lowered? Did you add into your CR calc the volume above the top ring to the piston deck. This the diameter above the top ring and the distance from the piston deck to the top pf the top ring.
Doesn't make huge difference, but it all adds up. Especially if you are trying to run as closed as possible CR to detonation limit.
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