Re: Oversized Rings?

[PM T2]

Measure the skirt on the piston to verify whether it is standard or oversized.

As far as I know, Otto can provide a ring in any sizing you want, provided you’re willing to pay for it.

FWIW the 2 inch bore covers several Evinrude motors, ranging from the early 30’s Sportwins and Fisherman, and up to the early 40’s Elto Lightwins. Some models of the Jr Quad and Sportfour also use the 2" X1/8" ring as standard issue. But if your bore is really punched out 20 thou over, those rings won’t help you anyway.

I’m assuming you measured the cylinder bore with a telescoping gage and micrometer, or a suitable bore gage set up and calibrated to suit. If the hole measures 1.020" +/- a couple of thou, your only option is to use the corresponding rings.

Hope it helps.

best,
PM T2

He's livin' in his own private Idaho..... I hope to go out quietly in my sleep, like my grand-dad did..... and not screaming, like the passengers in his car...