I did a leak down test on my 82 GS850G. Number three cylinder didn't pass. Compression test wet indicated rings not so much valves. I'll lap them in anyway. I took the head and jugs off and am in the process of honing out the cylinders. I'm already past the limit for cylinder bore before honing. How do I determine what size rings to install and what sizes do they come in. I know cars are 10,20,30,40,60k oversized, but what about bikes? Any help is appreciated.
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oversized rings?
- Thread starter Bob Shaw
- Start date
Assuming you know this but making sure: You have to change out the pistons and rings as a set and you really should do it across the bank. As opposed to just one cylinder. As for what size, the only one I know currently available as OEM is a 1mm overbore. Other option may be available as aftermarket. Might be easier to pick up a cylinder bank and replace that with your pistons and new rings.
It's the part that the pistons ride in. Just above the engine case. Item number 1 in this pic:
The cylinder head is what goes on top. It's the part that contains the valves, cams, intake and exhaust ports.
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