I decided to remove the head to check the condition of the cylinder and valves. Everything looked to be in good shape, but I noticed that the head gasket was a little wet with oil in one area, and there was some carbon build up on the the piston, around the valves, and on the head. I slid a new ring down into the bore and the end gap was .011. Since I have a ring set, gasket set, and crank seals, I decided to tear the engine down and freshen it up. There is .0015 clearance between the connecting rod and crankshaft journal, so I will be installing the rod back in the engine.The piston is in great shape, so that will be reinstalled with new rings. I installed the old rings back in the block to see how worn they were. The top ring gap was .024, the middle ring gap was .021, and the bottom (oil ring) gap was .044. The reject spec for the top and middle ring is .026 and the reject spec for the oil ring is .026, also. The new top and middle rings have an end gap of .011 and the new oil ring has an end gap of .009 when installed in the bore before honing. A rering job will put everything back into spec and the engine should be fine for many more years of use. I'll be cleaning up the engine bay and the engine, but I don't plan on painting anything. The paint is in good shape, and I want to leave everything as original as possible. If anyone has an original Nelson muffler in excellent or NOS condition that they are willing to part with, please let me know.
Edited by classic, March 06, 2015 - 10:39 PM.