What kind of documentation for used engine would satisfy you?

I had a chance to do a quick compression test today. Unfortunately, I did find something noteworthy. One cylinder was notably lower than the others. Every cylinder measured just above 150psi except number 2 which measured at 130. Still within spec for the motor but the fact that it’s an outlier is obviously a problem.

So it could be a valve seal, could be rings, could be a number of things but the bottom line is that it’s junk. Seems strange to pitch it when the motor ran well and pulled like a 300hp motor should, easily burned the 255s from a roll, didn’t consume any notable amount of oil.

Just for laughs, I’ll probably do a leak down if I have time. No answer would make this engine worth anything more than a “core.”

Well, that’s why I checked. Better than selling it to someone then having them come back unhappy, wanting their money back.