The original barrels were part of a casting (as Bill has mentioned).
The machine shop I used would break out the damaged barrel and replace it with a cylinder sleeve. It can be done if you find the right person and can find the sleeve.
good luck,
Dale
> I have had sleeves inserted into at least 6 cylinder barrels for the 71 > and 72 Honda 600s. I never had a problem with them. The machinist > who did them for me specialized in resleeving cylinders. He would break > out the old liner and machine the top and bottom of the barrel to accept his > sleeve. It had a small flange on the top of the new liner and a ring > which held the bottom section secure. He also used to rebuild > crankshafts for me ...... I would take him 2 cranks (each with a usable side) > and he would give me back one and a box of pieces. He closed up > shop years ago, unfortunately.
> What I had done with the 71 and 72 cylinders may not be possible with the > 1970 barrel. Someone who used to get their barrels resleeved told me the > ribbing of the 70 barrel caused a problem.
> that is what I know,
> Dale
> > Richard; You
> > are correct, but its not sleeved, its part of the casting. As such, > > it cant be re-sleeved.
> > Bill