Evinrude 70 acceptable compression ratings?

[ShoestringMariner]

Hey folks, whats an acceptable compression rating for these motors? I'm considering buying one with all 3 cyls around 120. Is this not on the low-ish side?

Thanks in advance

 

[racerone]

They are not alll the same style block.-----Post the model #

 

[ShoestringMariner]

Thanks, it’s a 1980 model is all I know. I should have googled 1st. Sounds like 120 is ok for these and 100 is fair or questionable.

 

[racerone]

My tester shows 140 + on a good one !!

 

[kbait]

If it’s 100psi or more, and all cyl’s are w/in 10%, you should have a runner.

 

[ShoestringMariner]

thanks guys