PV stroker compression??

[yamaboy2000]

anyone have any idea what the cold cranking compreesion should be for a 5mil PV engine to run pump gas?? the current cranking compression is about 220psi on a snap-on guage and the engine squish is around .055. I know that 220psi is way to high but with exhaust ports that move I'm not sure..:shrug:

 

[steve802cc]

Pull the cap off one of the power valves and do a compression test with the valve open.

I've run my 5mm power valve at around 200psi (valves closed) on pump gas with stock ignition with no advance with no problems.

Steve