My camera was dead, so I'll post some pics tomorrow.
Both the cylinder and the exhaust went on with no problems. The hardest part of the install was breaking the seal on the original cylinder, and then removing the gasket gunk!
The exhaust was rusted to the cylinder, so I detached the cylinder and exhaust together. I'm going to cut open the exhaust, it feels like it weighs about 5-7 lbs, it's got to be packed with carbon. There was some light carbon buildup on the piston, not too bad.
Started right up with no problems, and after adjusting the idle, it ran around the block a few times with no problems. It pulls hard from takeoff, which is what I want- I think it'll be right around 40-42 when I'm done. I can always change roller wieghts to adjust the powerband after break-in, to see what works best.
Tomorrow I'll try to fine tune it, and check the jetting and the plug.
I'm running an 80 jet in the stock carb (stock is either 76-78), and an NGK 5 plug, I may switch to a colder plug, we'll see.
1982 honda urban express (nu50)-65cc metra kit, proma low boy exhaust