Quote: Theyre not flat tops. They have a .050" quench dome, and a .039" head gasket, sitting .009 in the hole...with a .050" recess machined in the chamber
So do you have all the piston numbers to run the calcs (dome volume, valve reliefs, chamber volume, etc.) starting with the static CR? Cam card?
You can also work backwards using your known cranking pressure of 140# to come up with a theoretical static CR.
I'm at a loss to explain how a small fuel line effects cranking compression readings. Unless of course the motor already went lean and pinged itself on to life support.
