garncarz wrote: 6.Block up with combustion end up (if the rod end is up, there is a danger of melting the babbitt on the end of rod).
help with restorationThat takes me back - 1950s plain bearing material, usually only in plain big ends, not rollers. More often in steam engines....... :-)
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F If you wanted to use the other end of the thermal spectrum:
1.Remove the cylinder head from the engine already out of bike. 2.Scrape outer edge of piston with exacto knife. This will help the oil to penetrate. 3.Finely sand exposed rusty cylinder walls. 4.Vacuum the crud out of the engine. 5.WD-40 (or favorite penetrating oil) both sides of piston. 6.Block up with combustion end up 7.Empty three full cans of computer dust spray (upside down so you get the -67 degree liquid difluoroethane) into the cylinder. 8.Let it warm slowly overnight. 9.Lay engine on it's side. Hit the piston with a wooden block and maul. 10.If the piston does not move, go back to step 5 and repeat. Ha ther's your problem sir
Had to bite the bullet and drill it out. Tried everything used a bottle of map gas two tins of penetrating oil, made a pusher didn't move a thou. Couldn't even get the little end pin out had to drill that out. There is no sign of corrosion in the barrel and the other cylinder and piston is fine. It must have overheated and seized out of shape. I cant see any over size markings on the piston top where are they normally.
STD bore is 60.00 mm or thereabouts....
That piston looks like it will clean up nicely..... :-) Send me a PM and I'll let you know what parts I have. How about a pic of the rest of the bike? G '60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F
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