1975 Evinrude 85hp lost compression right side

heckhole

Seaman
Joined
May 23, 2011
Messages
63
Motor was doing 40mph+ on GPS. Ran fine, have no complaints.

I didn't lift the piston and look at the rings, I did try to rock it and it didn't rock. From what I can tell, some how, some way, there is zero damage to the cylinder walls. They honestly brand new, no scoring at all. Anything you see in the picture is from the reflection of the piston.

The only damage is that nick on the left side exhaust port near the bottom.
 
Last edited:

interalian

Commander
Joined
Jul 23, 2009
Messages
2,105
I'm just a shade tree guy. One of the gurus said my wobbly piston was normal.
 
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