Thank you for your fast answer...
so I will make a compression test with a warm /hot engine
if the values are in the 180-190 psi range...it would be a sign of higher CR.. Is there a formula to calculate ?
Greetings Juergen
ICA is Intake Closing Angle.... which is when the intake valve closes, expressed in crankshaft degrees after Bottom Dead Center on the compression stroke.
I am not aware of an exact formula... it varies a lot with the ICA, which varies with duration and cam timing. As an approximation for stock cams in engine like 318's, I have used 20 psi X (SCR-1) and it has been fairly close.
