Marquette Flyer

WTB Piston rings, 1930 Marquette

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Looking for piston rings. The bore size is 3 1/8, there must be other engines that used this size pistons. From what I've learned the block is Oldsmobile. While tearing this engine down I found the connecting rods are Buick. If anyone has a set of rings or happens to have an interchange book could let me know what other makes may fit.

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