I have some figuring out to do, so I'm starting this post to help keep track.
Story - My cam chain guide was making noise. Other than that my bike was running good. Compression wasn't the best, but also wasn't too bad, maybe around 130-140
While I had the engine out I also replaced the cam chain and the piston rings. I also cleaned stuff up. The pistons were stamped with .953 I believe these are stock size pistons. I ordered standard sized rings. They came stamped with the same markings as the old rings. The letters RN facing up.
Everything went back together good.
Bike started straight away, idles great. Now...
When the bike warms up, after riding it a bit, I get smoke coming out of the crankcase breather. Too much.
And the bike sounds like I have little metal mice having a conversation inside my engine.
I suspect the issue is with the rings. But what exactly went wrong?
My compression tester won't be available till next week.
Here is a link to the rings I put on. https://www.mikesxs.net/parts/yamaha-xs650-piston-rings-standard-size-447-type-oem-447-11610-00
Story - My cam chain guide was making noise. Other than that my bike was running good. Compression wasn't the best, but also wasn't too bad, maybe around 130-140
While I had the engine out I also replaced the cam chain and the piston rings. I also cleaned stuff up. The pistons were stamped with .953 I believe these are stock size pistons. I ordered standard sized rings. They came stamped with the same markings as the old rings. The letters RN facing up.
Everything went back together good.
Bike started straight away, idles great. Now...
When the bike warms up, after riding it a bit, I get smoke coming out of the crankcase breather. Too much.
And the bike sounds like I have little metal mice having a conversation inside my engine.
I suspect the issue is with the rings. But what exactly went wrong?
My compression tester won't be available till next week.
Here is a link to the rings I put on. https://www.mikesxs.net/parts/yamaha-xs650-piston-rings-standard-size-447-type-oem-447-11610-00
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