I'm still working on the dozer, but have started makeing progress. The rebuild kit didn't include wrist pin bushings, and there was some slop in mine, so I had to order them from Atlanta. Then I ruined the first one trying to put them in myself, so I had to reorder another one. The machine shop said they'd never seen them that bad before. The mechanics I spoke to said they don't replace those bushings and just reuse them.
What I think happened is the piston was moving around on the bushing which resulted in the massive tapper on the cylinder walls. Number six was the worse, and when it got so bad, the rings broke. This explains why I had the huge blowby issue come up all of a sudden.
The worse of it is over now. Sleeves are in, pistons are in and the head is on. Now I need to put on the rocker arems, adjust the valves and start putting the rest of the parts back on.
Eddie
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