what should my compression be?

[mike324]

What should my compression be per cylinder on a 1979 Evinrude 150 OMC V6?

 

[Dennisanoka]

Re: what should my compression be?

Mike,

I'd begin by testing each cylinder and write ea. down. They should be resonably close-within 5 lbs. is great. Anything over 100 lbs. is very good. I'd test them and then report back here your findings.

 

[tashasdaddy]

Re: what should my compression be?

Dennis is close, they are no published numbers, rule of thumb. within 10% of each other, 100 or above preferable. the reason is each guage is a little different.

 

[emdsapmgr]

Re: what should my compression be?

Dennis is right on.. If you have the 456/457 heads, the compression could be in the 108+ range.