Quote:
Originally posted by mustangman65_79
Right now all 8 cyl are running 120 psi, I was wondering what compression this is, I was guessing somewhere around 8.5:1
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That is called
cranking compression, and has little to do with
cylinder compression, which is what you are asking for. The
only way to determine cylinder compression is to know the total cylinder displacement, including the valve reliefs in the piston, the combustion chamber, the distance from TDC to the deck, and the thickness of your head gasket.
Take care,
~Chris