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sampsonrepair 
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Joined: 07 Jan 2025
Location: Wisconsin US
Points: 44
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 Posted: 11 Mar 2025 at 12:58pm |
Precisely. If someone wants a trailer queen, then none of that matters. I just feel a lot better now that we are moving away from the diesel all together.
Do you have any idea if my diesel flywheel can be used with a gas engine? Crankshafts are the same, rear plates are the same, clutches are the same, front pulleys are the same. Starter, ring gear, and flywheel are different part numbers. I'm guessing the gas flywheel is perhaps lighter? But I can't think of any harm in bolting up the diesel flywheel--unless there would be some weird external balance issue or something. I wouldn't think so, given that the cranks are the same.
I have a lead on a running D262 out of a D19 I'm pursuing and another out of a C2 combine. The engine out of the D19 definitely sounds like the less complex of the two options. But the seller is keeping his flywheel and starter.
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DrAllis
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Joined: 12 Sep 2009
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Posted: 11 Mar 2025 at 1:13pm |
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Flywheels interchange. RING GEAR TOOTH COUNT IS DIFFERENT I THINK.
Edited by DrAllis - 11 Mar 2025 at 1:14pm
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sampsonrepair
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Location: Wisconsin US
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Posted: 24 Mar 2025 at 9:39am |
I have a running gas engine coming for this tractor out of a D19. I'll probably see it today. We are hoping it doesn't need much in the way of repairs. Even if it does, I still think it's the best option in this case. Question: I'm assuming the "Mack" custom fire rings have no relevance to this engine. The original AGCO fire rings were different part numbers between gas and diesel. What are guys using for head gaskets in the gas versions?
I'm hoping there is no reason to pull the head anyway. Mainly, I would like to return the "Mack" rings to their owner and need to know if there is any reason not to do so at this point.
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DrAllis
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Posted: 24 Mar 2025 at 9:46am |
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Gas head gasket and fire rings were much thinner than the diesel parts. Gas engines had ZERO head gasket/sleeve sinking issues.
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Don(MI)
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Joined: 15 Sep 2009
Location: Michigan
Points: 3815
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Posted: 24 Mar 2025 at 2:26pm |
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Is it even possible to weld the Sleeve holding collar in the block, around the Radii to reinforce this area? Or it could never be welded with enough precision or not warping it?
Might not be using the right terms here...but you get the idea. Make the weak point strong.
I have both a block and head I'm keeping for my Diesel. I have a different D262 in the tractor. Both head/block are original. I'm thinking I should have them inspected to know what I have.
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Galatians 5:22-24
"I got a pig at home in a pen and corn to feed him on, All I need is a pretty little girl to feed him when I'm gone!"
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sampsonrepair
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Location: Wisconsin US
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Posted: 24 Mar 2025 at 4:17pm |
My idea would be custom sleeves, either with wider flanges at the top (but there isn't an over-abundance of 'meat' up there to work with, if you know what I mean), or else make the sleeves to be a shrink / press fit at the top. At the end of the day, you would be "dry sleeved" at the top and "wet sleeved" at the bottom. With too much of a press fit, I worry about cracking the block between the counterbores, I don't know. As the Dr. says, you still have the weak head to worry about.
At the end of the day, the diesel is cool, but we decided to go with the much more reliable gas version for this particular project. I'm sure with enough $$$, determination, and a good machinist, anything is possible.
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DrAllis
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Posted: 24 Mar 2025 at 5:13pm |
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An extra .020" or .030" lip (.040" to .060" on the sleeve lip O.D.) would have to make an improvement. A press fit of any kind will wind up splitting the block right down the middle. Seen it before in my tractor pulling blocks. Mack always insisted the fire rings on the head gasket were too soft. They'd start to hammer out and in short order, the sleeve would start moving and then sink. I can't argue his logic, but the ledge/lip is still waaaay too inadequate, especially when you compare it to other A-C engines that never have issues. And then, there's the cylinder head.........
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sampsonrepair
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Posted: 25 Mar 2025 at 9:22am |
I am measuring .206" between upper counterbores 1-2-3 and 4-5-6. An extra .020 lip on the sleeve reduces that to .166". I would have to wonder about cracking between counterbores. Maybe it wouldn't be an issue. Isn't there someone on this forum somewhere that has done this (wider flanges) without issue?
My opinion: This block is too small and too light to pack a 262 turbo diesel into, period. They should have left it alone as a bored block, or reworked it into a smaller wet-sleeved engine that had decent sleeve lips. I look at this engine and I see a gasoline / propane block, not a diesel block.
I get it that there was a horsepower race going on. It seems that more than one poor idea / overpowered tractor got rushed to market at this point in history, did they not? It was most certainly not just an Allis issue.
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Allis dave
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Joined: 10 May 2012
Location: Northern IN
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Posted: 25 Mar 2025 at 10:08am |
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I'm happy to know that the D19 Gases were good tractors. I thought all of them had issues and not just the Diesels.
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