In an earlier message, you indicated you were going to reuse as many old parts as possible and only needed it to last 25,000 miles. Also, this is the engine which may have a marginal crank because you had all the metal show up in the engine and its oil. For what you are intending to do, your cam chain tensioner roller will work fine. The aluminum rubbing block on the bottom appears to be in good shape and the pad which the tensioner presses against looks ok.
If the roller part is not crumbling every time you roll it along the cam chain, it will be ok. You might want to use a fine wire brush or some fine sandpaper and remove any of the loose pieces of the roller.
If you find that it keeps crumbling, then you don't want to use it.
I don't see your worn roller as being the item which leads to the demise of your engine. If you decide to start putting lots of new parts into your engine, then I would consider replacing the roller.
Did you check out the cam chain tensioner?
Is it ok? I thought you said it had a bolt stuck at the end of it?
It should have plunger at the end of it.
Also, did you find a new set of pistons? If you are going to use the old pistons then you definitely do not need to worry about changing the roller.
good luck,
Dale
good luck,
Dale
> I'm
> just curious - what would most experienced Honda 600 engine rebuilders do if > they really needed a new cam chain tensioning roller like I > do.