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I'm starting to shop for parts due to a rod bearing disintegrating. There's lots of side to side, and up and down movement on the left side. Which explained the noise and the light marks left by the intake valve. Glad I shut it down almost as soon as it started sounding weird.
Anyway, there are vendors on eBay selling new piston kits marketed as '65-'74.
4 speed and 5 speed pistons and rings were listed in the parts books 283 and 292 so I assume there is some difference.
or can either be used as long as long as the matching number rings are used?
i am also looking for a recommendation for a shop (in the NE) that can do the crankshaft work, but I can ship it too.
thanks,
Adam
 

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Not worth the expense (which will be very expensive) to repair the crankshaft IMO. The crank shaft is pressed fit at the factory so it won't be easy (if even possible) to find a shop that can do that work.
You might as well start looking for a used replacement crank.
 

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It's not too hard to pull the crank apart... But it may end up being fairly expensive (more than buying a good used one). I don't know how common fixing the crank on old Honda twins is, but I've had to re-make the crank for a Suzuki GT750 (those two strokes even have seals in between...), and for some old pre war British bikes. There definitely are shops which specialise in such stuff, but the prices may be very different (for some, making a whole new journal is easy, while others may charge a lot for it, and it probably also depends on the crankshaft design).
 
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