Re: reinstalling old piston and rings

Posted by Ron in Nebr on November 21, 2005 at 22:30:46 from (12.192.38.149):

In Reply to: Re: reinstalling old piston and rings posted by Ron in Nebr on November 21, 2005 at 22:07:47:

I re-read your question after I posted the first time, sounds like maybe you haven't had the rings off the pistons....anyhow:

The answer to the last part is that nothing keeps the ring gaps from lining up occasionally as they rotate. Some early engines(Hudson Hornet for example) and some motorcycle engines had the rings pinned so they couldnt rotate. But the rings on most engines rotate by design- the reason being is to keep the ring grooves from building up with carbon and causing the rings to stick.

Rings rotate enough that if the gaps do happen to line up once in a great while they don't stay lined up long, and if your rings aren't worn to the point where the gaps are too wide then it isn't enough to affect anything....which, along with the fact that rings lose tension as they age, is yet another great reason to re-ring her while she's apart.

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