Picked up a John Deere BO at auction

Started a repair on a front wheel for the 1942 John Deere BO. It was thin enough that I decided to cut out the rusted through area and found a donor wheel to cut patch pieces out of. Got the pieces cut out of both wheels and just need to make a final trim to fit before welding.
 

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I did similar to a friend's John Deere H rear wheels. Its a lot of work but good rims are hard to find and expensive when you do find them.
 
Finished fitting and welded the patch in the wheel. The donor wheel shape has a pretty close match to the original wheel so it wasn't to much work making it fit close enough. Need to check the rest of the wheel for thin spots that need weld but after that It will just need a good sandblasting.
 

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If that headlight is what I think it is, be very careful with it, it's worth some big bucks... One of the guy's in our club has one on his '38 B barn find with original patina. He takes the headlight home with him at night so no one will steal it. They are quite rare in these parts because they were an option back then, and many didn't want to pay for the extra frills.
 
If that headlight is what I think it is, be very careful with it, it's worth some big bucks... One of the guy's in our club has one on his '38 B barn find with original patina. He takes the headlight home with him at night so no one will steal it. They are quite rare in these parts because they were an option back then, and many didn't want to pay for the extra frills.
Its now sitting up on an out-of-the-way shelf in the shop.
 
They had a runnin BO at the auction when I got the 1800. brought 750 and I was going to bid on it but needed the 1800 to pull the batwing mower at the farm and pockets were not deep enough to get both of them
 
Pulled the rods and pistons. Looks like all of the rings are stuck. We'll see if I can get them loosened up without breaking any of them. The block came off with ease.

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Nice, thanks for sharing.

A friend of mine from high school went through what you're going through now, but with an early model D. She was in rough shape, but he and his dad were determined. I remember that engine being locked up tight and after a lot of soaking, pounding, heating, more soaking, praying and some choice words, the pistons eventually came out of the cylinders. It was tore down for a year and a half with just about every part getting cleaned, checked and repaired as necessary. Those pistons were dang near the size of gallon paint cans. When they finished with the restoration, I was amazed how easy it was to hand start (no electric start), petcocks open of course.
 
Made a little progress on the pistons. Got the bottom oil rings loosened up. On the #2 piston I have the top ring loose and the other 2 compression rings are starting to move but are tight on one side. The #1 piston shows no sign of the compression rings moving after three 1/2 hour runs through the sonic cleaner and an overnight soak in ATF/Acetone mix.
 

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We have a 1945 John Deere B that has a 4.5" bore that we bought as a basket case. I looked around yesterday for the pistons with no luck but today I found them. Looks like dad had already pulled the old rings off of them and I don't see them laying around. With the pistons was a Hastings ring set. Since the other tractor may never go back together at this point I have a set of rings in hand if needed. Quite the difference in the pistons between the different model tractors.
 

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I assume the pistons from the '45 were for a gasoline tractor and not an all fuel tractor.
Both are all fuel. The difference is the cylinder head. The unstyled B/ BO/BR head was flat with no combustion chamber. The Styled tractor had a cast in combustion chamber. 1st pic is the unstyled BO and the 2nd is the Styled 1945 B.
 

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Oh yeah, I see. But it looks like the additional crown height of the piston is taller than the recess in the styled B's head. Do you think that sometime in it's history someone put some higher compression pistons in the '45? My dad put M&W pistons in his 49 A to increase its power...
 
Oh yeah, I see. But it looks like the additional crown height of the piston is taller than the recess in the styled B's head. Do you think that sometime in it's history someone put some higher compression pistons in the '45? My dad put M&W pistons in his 49 A to increase its power...
Anything is possible. I'll see if I can find some part numbers anywhere.
 
The only marking I found was TOP-G on the 1945 styled B piston and found the same on a late B piston. Not sure what the G means but could stand for gas. Searching online I found these "45 B pistons have a chamfered top all the way around where as these are only chamfered half way so I would assume higher compression. The BO piston just has TOP stamped in the skirt.
 

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Got the rings off of the #2 piston but the #1 shows no sign of movement on any of the compression rings. At some point here I will cut my losses and just break them out. Not worth it to me to spend weeks trying to save the old ones. I ordered a Flex hone that should be here next week and if the rings aren't loose by then I'll take them out in pieces.
 
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