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WTK: Average cylinder pressure and a few other questions

FP1201

Well-known member
Going to do a compression test on the PE90: What kind of pressure should it have?
(Also, it's been said that these are "low compression" engines ~7.5:1)

Another question for validation: Is it true that O-470 jugs can be hung on the PE90?
Are they dual plug?
Chrome?
Higher Compression?
Are they bolt on, or require boreing the case?

Ran it for a few minutes yesterday to move it in the yard....w/ 100LL it didn't sputter at WOT, but still only turns 2,400 RPM's. :(
 
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