None of those models you’re listing use piston rings with a 2 & 1/16th bore diameter. You are talking about a bore that is only 0.060″ over two inches in diameter.
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Most of them are either rowboat motor powerheads used on a high pressure or centrifugal pump, or else they are single or twin cylinder inboards. Rowboat motors mainly had bores of 2.625″ at that time.
Model 118 is a 1928 twin-cylinder pump model FV, so probably used a Fleetwin powerhead, which is a 2 & 7/64″ bore. Which at 2.109″, is a weird size.
At any rate – none of those motors would use a ring size that is going to help you right now. They will all be too big in diameter as well as thickness. The narrowest ring would be in the Fleetwin, and it would still be at least 1/8″ thick.
Sorry if that’s not helpful, but it is what it is.
That bein’ say-ed – looky here….
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...
