markjs
XS400 owner, bike lover
OK, assuming I fix my XS400J-K motors to make one tight motor with a good gearbox. Would you pull the top off the '82 engine and install it to the solid '83 bottom end, or, alternatively leave the perfectly good top intact and split the bottom of the '82 engine's case and swap out the tranny parts. Right now I am thinking the experience with the tranny is enticing and may actually end up an easier job in the long run. Anyone got an opinion?