Posted by Steve@Advance on June 05, 2019 at 13:34:54 from (24.182.105.179):
In Reply to: Smoking 8N posted by Grandpa love on June 05, 2019 at 13:05:43:
A couple things to try...
Try running it a quart low, especially if you are there to keep an eye on it. Sometimes that will help, especially with rear main leaks.
Have you cleaned the crank case vent tube? If not, take it off, clean it out. It may be packed with carbon and pressurizing the crankcase.
Is there a thermostat in it? Running it hotter can make a difference.
But from the video, it looks like the rings are gone. If all else is good, no knocks, acceptable oil pressure, you "might" get away with an inframe ring and bearing job, decarbon and lap the valves. Something commonly overlooked is the condition of the ring lands. If they are wide beyond spec the rings won't seal. I would not buy any parts until you get in. No way to know what size bearings, how much wear, lots of guess work, and my guesses are always wrong!
With the old gas motors, you can get by with some shortcuts. Just be cautious, consider the cost of doing it right or doing it over. The intended use is a consideration too, how much and how hard does it get used?
The "good motor", do you know it really is a good motor? Too many times a good motor is only good to the pocket book of the seller! Just be careful, dealing with something this old, one thing for sure, it ain't gonna be low mileage!
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