Yesterday, (12/23) I started tearing down the engine that came out of the propane tractor. It always amazes me what you find when you tear into something this old. The oil-pump and pick-up surprised me the most. The pump has a 10 tooth tear on it, from a D-17 maybe?
Here is one of the reasons I removed the engine. You can see where someone trimmed the gasket when they put the pan on, it leaked like a sieve.
Another disturbing find, not sure what causes this. I did find the shims pinched between the halves of the bearing shells, that couldn't have helped. You can see in the picture just on the left side of the bolt hole where the shims were pinched.
The engine has flat top pistons, 4&1/8" bore. It is NOT clean like I have heard propane engines tend to be on tear-down. Who knows if it was built for propane or ran on gas for quite a while? Had 190 psi compression in the best cylinder. One sleeve looks like the wrist pin may have been hitting. The low cylinder had 175 psi when I did the compression test. Maybe I should start a separate thread for the engine portion of this?
Edited by IBWD MIke - 24 Dec 2016 at 10:59am
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