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 - Experimental Tractors Article - by Danny Bowes (Dsl). Tractor technology appears to have nearly hit it's pinnacle of development. If you agreed with the subtitle, you are rather mistaken. Quite, actually. As a matter of fact, some of the technology experimented with over 40 years ago makes today's tractor technology seem absolutely stale by comparison. Experimentation, from the most complex assembly to the most simple and mundane component, is as an integral a part of any farm tractor's development
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