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Piston Rings

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petermigreen:
Rather clumsily managed to break a ring during disassembly today. So obviously need to get a new set.
Question is this. Am I correct in thinking that if cylinders are on standard bore then the pistons will have NO numbers on the top surface?
Anybody got any sets?

Thanks, Peter.

Bryanj:
Pistons are not always marked with the size but the rings always are by the gaps usually with a letter on one side of the gap and numbers on the other. If no numbers its standard then 25, 50, 75 or 1.00.

Numbers/letters always face upwards

petermigreen:
Very helpful thanks, I'll clean them up and have a closer look, under a magnifying glass.

petermigreen:
Just an 'R' on middle ring. No markings on top rings does that mean they are non directional?
Thanks
Peter

Trigger:
Should be markings on the top ring, where did you get them from ?

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