Re: HD Happy Time
I disassembled it and was shocked to find out that it had a needle bearing top end. I had always thought it was a bushing. There is some up and down play in the wrist bearing. The rings look not too bad. The cylinder walls look pretty scratched up. The piston looked like there was some overheating .i'm thinking thats from not using a muffler. To those of you who have changed the rings on your engines, at how many miles / kilometers did you do it at?
I put the cylinder back on without the base gasket to find out if the piston would touch the head. I put the head back on to see if i could notice a difference in compression when i cranked it. The piston didnt touch the head, but it might still when it heats up. Once i cranked it, I found out that it has no compression! (yes the spark plug was in) Is this from the lack of nothing sealing it between the crankcase and the cylinder?
Do you guys think that the crankcase bearings that are in there would handle the compression mods? I'm tempted to just rebuild the top end and do porting and mabe compression mods.