I got engine out and pan off Saturday. Found what I expected, no major problems, pan was clean (well for a 50 year old engine). Pulled a main and rod cap. On the main journal there is a visable step where the oil passage of the bearing is. I didn't have measurement tools with me, didn't expect that I would get this far, but I would estimate a .004 to .005 step. That would make the crank .008 to .010 under. Couldn't measure bearing wear. On the rod jounal I found same thing, but maybe a little deeper. Good news no scoring what so ever. Next task is to get head off. Was going to work on it Sunday but Dad (80) was tied from helping me Saturday, and he wouldn't have been able to stay in house while I was in barn. I have a freind who worked for an engine rebuilder, so I'm going to see if he'll come out and measure stuff up. I'll try to post som pic in near future.

Sounds pretty normal so far:)
Here's some specs to keep ya going:

I have appointment this Tuesday to have crank and cylinder measured. I am sure that crank will have to be machined. I have called SS tractor to look for bearings and have come up with .030" under rod bearings but nothing for the mains. Still looking. Anyone have a part source for main bearings for a D2 serial number 5U 9429. Will have to be undersize bearings.

Here are some pictures of the torn down engine. Still looking for main bearings. I might have a line on rod bearings. Any help on where to get mains would be appreciated.

Timbo give this place a call & see if they can help you with some main brgs. It is (724)468-3646 & ask for Den Tressler. Also have him check & see if the main store has them or can get them for you.It is in central Pa.