I have never rebuilt anything like this before. Briggs & Strattons galore. Several chain saws and a small block chevy or three but never a Honda. Fingers crossed I don't screw this up.
The engine ran but smoked like a freight train. Compression test showed 50 PSI. A spoon of oil in the cylinder jumped the compression test to 125 so rings bad, valves good. I got it down and most everything looks great. Cam mic's within spec. No galling or scoring on anything. Looks like rings and gasket set will get the rotating assembly back in order.
Two bumps in the road so far.
First is no biggie. The head is made for a cable actuated compression relief. The pull rope cover is not. I have the parts from a donor motor i was given to put a manually operated lever in it's place. I'm reasonably certain that'll work but would like a second opinion. Chances are, I'll never use it anyway, I just don't want the lever flopping around with no cable.
Second is a big deal. The pulse rotor assembly is screwed. I do NOT know how it ran. A testament to how well designed the motor is. The springs are in pieces. I found the chewed up remains. The rotor is mangled. The advance weights are bent beyond use. The donor motor isn't much better.
Does anyone have a rotor and the spring weighted advance assembly they would sell. I have several modules and all the housing parts, I just need a usable rotor and the advance assembly. I COULD use just the weights and springs but would just as soon buy the whole contraption if someone has it.
Thanks for the help. My parts should be in Tuesday and I'll start getting it back together.