1969 Johnson 9.5 (or any 2 stroke) Ring Question

[mdebar1]

I'm rebuilding an old Johnson 9.5 and having trouble finding someone who has a feeler gauge and micrometer in Baton Rouge that will check the clearances and install the rings on my pistons so I can proceed with my rebuild. One guy I've talked to said that I don't have to worry about the ring gap on a 2 stroke when using OEM rings - just put them on "as is" with no grinding. Is this true?

 

[Joe Reeves]

Re: 1969 Johnson 9.5 (or any 2 stroke) Ring Question

Particularly on the smaller hp models, that is the case. Grinding will normally result in an error, $$$$$ down the drain!

 

[mdebar1]

Re: 1969 Johnson 9.5 (or any 2 stroke) Ring Question

Good call. I owe you big time - I was about to start grinding on these rings.

 

[boobie]

Re: 1969 Johnson 9.5 (or any 2 stroke) Ring Question

Even tho' they're OEM rings the gap should be checked in the cyl against specs before installing on the piston. The manufacture can sometimes screw up.