Compression

[duckslayingpro]

What should the compression be around on the 2 motors if anyone knows it would be greatly appreciated...<br /><br />1. 1995 Nissan 25hp 2 stroke 2 cylinders.<br /><br />2. 1975 Mercury 9.8hp 2 stroke 2 cylinders.<br /><br />Thanks again,<br />duckslayer

 

[JB]

Re: Compression

In both cases you should find over 80psi with the cylinders not differing by more than 10psi.