New Rings and New Ring Gap

[Guest]

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.

[gearhead13]

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.

[Triam]

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.

Yeah, I was using a piston to push them down.

[tkent02]

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.

[rapidray]

As long as your piston to wall clearance is .004", or less, you are fine. Put the rings in & run them.
Ray.