I think the last time I posted was a week and a half ago or so. We are in the process of getting an 830 deisel with COM going. We purchased a complete tractor, and had a donor tractor for parts already here.We had found that the tractor had been overheated numerous times. We also found that the block counterbores were cracked on cylinders 1, 2, and 3. The cracks go halfway around the counterbores on 1 and 2. After consulting with one of the local machinists, we decided to use the engine block from the donor tractor. The donor tractor's block looks like it's in far better shape, and it's a whole lot less $$$ than stitching, welding, or any other tricks the machinist has. We surmised that the cracks were caused by cold water being dumped into the radiator while the tractor was still overheated (in an effort to cool it, which it did too quickly). Anyone have experience with this kind of thing? Any other ideas as to what may have caused it? The heads and block are at the machine shop. The block is being cleaned and blasted, then checked for line bore. The heads are being completely re-done, since they were overheated so much. On the plus side, we learned that the tractor has 2 newer rear axles. The previous owner had unknowlingly driven it into a trench that the gas company had left uncovered/unfilled after they ran a gas line. So, I guess the gas company paid for two new rear axles, as at least one of them was bent. So, from the donor tractor, we've used the seat, the front axle, engine block, COM pump, ... I sure am glad we have it! We are cleaning, sanding, painting, etc the tin from the donor tractor, in an effort to sell it. The dash, nose, centerpiece, and fan shroud are already posted on the auction.
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