Hey guys, I'm working on rebuilding my top end completely. I've honed the cylinders and cleaned the thing up, but I've been having problems with the rings. I went to measure the end-gap and the measurements are at .35mm to .50mm. Spec is between .10mm and .30mm. What should I do? I got these rings from Japan so I seriously doubt it'd even be worth the trouble shipping them back. Since the service limit is at .70mm should I just put them in and use them? Thanks for the help guys.
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Are you sure the rings are square in the bore? usually by pushing them down with a piston. If you are off by just a little bit the gap will measure larger than it is. -
The rings are loose because cylinder is worn too large. It will run but how loose is the piston in the cylinder?
I have thrown engines together with very loose rings/pstons, they have ran OK, but I doubt if they would have lasted very long.Comment
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As long as your piston to wall clearance is .004", or less, you are fine. Put the rings in & run them.
Ray.Comment
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