Piston rings are not fixed in place and can rotate microscopically . Cylinders do not wear evenly . An inch down the bore it may have wear for 120 degrees on the front and another inch down it may have wear 60 degrees on the rear . When I bore a block I can see odd wear patterns that vary from cylinder to cylinder . With the bore wearing erratically the rotation of the rings can vary .
Not saying anyone is right or wrong since there are many variables . Some motors live through 3 races and some live 300K miles . Some last 10K hours but still get used another 5K hours . Then you throw in low compression vs high compression and that changes the equation too .
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Today's Featured Article - Product Review: Black Tire Paint - by Staff. I have been fortunate in that two of my tractors have had rear tires that were in great shape when I bought the tractor. My model "H" even had the old style fronts with plenty of tread. My "L" fronts were mismatched Sears Guardsman snow tires, which I promptly tossed. Well, although these tires were in good shape as far as tread was concerned, they looked real sad. All were flat, but new tubes fixed that. In addition to years and years of scuffing and fading, they had paint splattered on
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