RPM's & Prop

[reelapeelin]

Originally Posted by THEFERMANATOR

He's got a mid 90's OMC 150 2 smoker, pretty simliar set-up to tsubaki's boat I believe. With all the problems he's had I stil lthink something is up with this engine. It should have around 120-125 pounds of cranking compression out of that engine I believe. I know some only had 90, but those were engines with idle reliefs(the late 80's-early 90's 200/225's), but some others have a140(my old 85 140 has 155 out of it, but it is built up a bit).

Yeah, that much variation in compression is a problem...he needs to find another mechanic who's not trying to "defend" the motor....

[aussie]

yes he probley dont want to do the engine again free of charge and is trying to cover his workmanship in my eyes 100psi is too low for a 2strokes all u need is a small scuff mark in the bore and it kills the performance of a 2 stroke pull the heads of and check the bores