Re: 1973 Evinrude Mate 2HP Issues

[shane-r13]

quote fleetwin:

OK, well those rings just can’t be OEM rings, and the big end gaps caused by the flat ends could surely explain the low compression readings… It seems strange that those rust marks did not go away while giving it the 50 cent hone job with the emery cloth, which concerns me.
You have got it back together now, so go ahead and try it, but I think you ought to go ahead and order the proper OEM rings…65PSI is pretty marginal for this engine, especially seeing that it has new rings…
I am very interested in finding out just where you got the flat ended rings, and if they were portrayed as OEM equipment…
If you order the new rings, please do not reassemble until you have checked ring end gaps in the cylinder, along with side clearance on the piston…

I agree i’m not satisfied with 65psi, but i thought it was decent considering the ring end gap I have with the improper rings. I bought the rings local, came in a bag with the correct part number so I never even looked twice at the rings them self until I got home and was slapping them on the piston. Foolish mistake. Ahh well live and learn. If it even fires once tomorrow new rings will be ordered ASAP because at least i know it will run with proper rings and at least more compression hopefully.

I’ll report back tomorrow with what happens.

Thanks for all the help and input so far! This site has become invaluable in my motor repairs.