Check this out. This is off a friends bike that ran great. It made no wierd noises or anything. Compression was fine. Pulled apart the topend so he could sell the cylinders and here is what he found.
Now, my question is: Is this going to be useable? I know, it might be a stupid question! There were no symptoms of a problem, the piston and rings are fine. I am pretty sure that this will not bore out. What do you guys think? I know the right thing to do would be to replace it but, if it works, why?