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O.K. I just replaced both pistons, had cylinders bored, new rings, reground valves, new cam chain. I think I may have put the cam chain on so the cam is 180 out of proper timing. Does this matter with a basically stock xs 650 engine? It seems like it wouldn't matter with both cylinders firing at...

Thanks for all the info! Hey xs Leo, My stock adjuster feet are pitted so I think I'll do the Elephant foot modification, it looks like a good solution. Thanks for the help. Lars

I took them off in order and kept the parts together, then I noticed the numbers and the positions they were in didn't make any sense so I assumed I had them mixed up. Thanks for your input

Hey People, Well I just got my head back from getting the valves ground, I went to put the rocker arms back in the cylinder head cover and I noticed that there are different numbers marked on the four rocker arms. Two of the arms are marked #18 and the other two are marked #19. My question...

Thanks to all who replied. OK, I think I'll take the pistons cylinder and valves to a machine shop and have them measure the parts and see just how worn they are. The cam chain tensioner still has it's plastic, but it probably is 30 years old, can just the plastic be replaced? I don't...

Hey, I am new at posting so please be patient. So last time I rode my xs650 the engine was making a clacking noise, I figured it was the timing chain and tore down the engine today to look and see what is wrong? I took the head off and the timing chain and adjuster look OK to me, so I and...