Filip Garsbeke had a couple of 30hp rings sets at Stanford and I'm looking for these for my motor rebuild. One set had the reference on them SP107, the other SP111. Filip said he was told the 111 set were oversize when he bought them, for a motor that burns oil.

Has anyone got any idea what size pistons and bores these rings are for? Any help would be appreeciated.

Thanks in advance 😃

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