This engine had a carb clean and a bath at the car wash. The exhaust port is busted out but it looks like I can cut threads and put a 1" galvanized or black pipe in it.
The head took a bath. I also chased the threads in both exhaust port bolt holes. There is enough threads in the busted part to maybe work if I use a wire to tie the bolt down aircraft style. Or I may try sold alumaloy to fill in the missing area and redrill the hole. Need to see how much exhaust gets through the gap between the muffler insert and the block.
Reassembling the head. From the engine users manual: Head bolts torque to 210 in/lbs. Intake at .005 in and exhaust at .010 in.
Lapped the valves and put it all back together.
Did some testing. The muffler seems like it will be OK. Got the governor closer to useable. May have a gas leak at the carb but will not know till I switch to the correct gas line.
Mounted gas tank. Short a few screws for the trim. Added correct fuel line and it still leaks. Need to try changing elbow on carb. Soon this will be moved to the running list.
All this engine needs is a gasket for the muffler and maybe an elbow for the carb. I will tear of the carb and muffler when I get the gasket. But it is essentially done so it is moving to the running list.
This is an interesting engine in that it is my only OHV but it is also one of Brigg's weakest engines. I should have checked to see if it had a cast iron sleeve when I had the head off but i expect it does not. Maybe I will check when I have the carb and muffler off.
Anyway if all this engine is going to do is sit on the shelf there is no point in addressing the minor smoking problem. But I may try to solder a lead to the busted off low oil sensor.