Factory PSi on 90's 8 hp?

[Wee Hooker]

Anybody know the factory spec on cyl compression on a 99' nissan 2 stroke 8hp.?
Seeing 105 and 115 on a buddies, and don't know what I should be seeing.
The difference makes me suspect a leak/crack ( and the motor does run rough when it warms.) Thoughts welcome.

 

[pvanv]

Re: Factory PSi on 90's 8 hp?

Sounds a bit low, and also a bit of a spread between cylinders, but not horrible. Precise specs will of course be in the Factory service manual. Unless you want to do a tear-down, I'd do a carb cleaning/adjustment and a de-carbon, and see what the results are.

 

[Wee Hooker]

Re: Factory PSi on 90's 8 hp?

Thanks VPanV, I didn't like the spread either. He's offering me the motor for $150. Tempting but I'm concerned about what it's going to take (in $ and time) to get it usable.