I have a set of used step head pistons and the block I believe they came from. I am wondering if they are worn beyond use, or if I can make a go with them. I can measure the pistons and their corresponding cylinders, but I won't know if the clearances are excessive.
I have Googled piston clearances, and for street vehicles it looks to be around 1- 3 thousands, while marine and air-cooled applications are larger. Agricultural applications may be closer to marine, if not larger.
My question is what would be considered excessive based on the intended use of the tractor, which would be for fun, not heavy ag use.
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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