Farmall 140 engine question

Farmall Super A, AV, 100, 130, & 140 1939 - 1973
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Farmall 140 engine question

Postby Dave Hull » Tue Jun 14, 2022 4:06 pm

I have a 140 early 63 based on the serial number and I’m wondering how to tell which piston sleeve version I would need to replace in this tractor? It looks like somebody might’ve been in it before because the End clearance on the compression rings is way too big, any guidance or helping me much appreciate it

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Re: Farmall 140 engine question

Postby Dave Hull » Tue Jun 14, 2022 7:45 pm

More info,367825R2 this is behind the oil filter and Looks like 101762 . It was behind the throttle linkage to the governor

21227J . Is the serial number on the tag The Pistons in the block have a raised top they are not flat. Pistons have three rings plus the Oil ring each

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Re: Farmall 140 engine question

Postby SamsFarm » Tue Jun 14, 2022 11:05 pm

You sure you need new pistons & sleeves and just not new rings?

Sounds like you need to do some checking of the bore diameters and pistons for wear.

If those are within spec, then you might just need new rings.

You also have to check the bores for a ridge, and that ridge might need reamed before new rings can be installed
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Re: Farmall 140 engine question

Postby tst » Tue Jun 14, 2022 11:29 pm

yes measure the bore 1st before anything else, not sure if I have the name right but I think IH sold a updated piston set called "firecrater" that were domed, you may have those, and if the bore is worn those are replaceable cylinders, they press in , I have one apart right now for a rebuild

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Re: Farmall 140 engine question

Postby Gary Dotson » Wed Jun 15, 2022 8:00 am

Dave, it’s really good to hear from you! Regina and I think of you often. It’s good to hear you’re able to play again.

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Re: Farmall 140 engine question

Postby Jim Becker » Wed Jun 15, 2022 12:37 pm

Agree on checks and measurements before changing the sleeves. Back to the original question, The C-123 engine has a 3-7/16 lower bore. The sleeves are the same in all versions of the C-123. The lower bore of a C-113 and C-135 are different so sleeves for those engines will not interchange. By the way, The PDF manuals on this site include the service manual for the C-123. It is "GSS 1295J R2 ENGINE & FUEL SYSTEM C-123, C-135, C-146, C-153 OCR" and is under Service Manuals/Blue Ribbon Service Manuals

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Re: Farmall 140 engine question

Postby Dave Hull » Wed Jun 15, 2022 5:09 pm

Any idea if this kit is the right one for this tractor?
For Super A1 and AV-1 serial number 31300 and up, Super C, 100 and 200 (C123 CID 4-cylinder Gas) (stepped head pistons), (overbore from 3-1/8 inch to 3-1/4 inch). Contains sleeves, pistons and rings, pins and retainers, upper gasket set (with head gasket) and pan gasket. Reference ID: BIFH1159

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Re: Farmall 140 engine question

Postby Jim Becker » Wed Jun 15, 2022 5:51 pm

The description sounds about right. However, I don't see the 140 listed. C-123 engines with engine numbers 65,000 and up were used in the 140 and 240. There would be some differences in the gaskets on those later engines. A little more looking might find you a set that lists the 140. (A lot of vendor descriptions are a bit messed up).

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Re: Farmall 140 engine question

Postby Dave Hull » Thu Jun 16, 2022 4:37 pm

Piston pics-Has anybody seen a piston like this one? With the top compression ring placed in the cylinder near the top non wear area it was a large gap close to .100 inch?
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Re: Farmall 140 engine question

Postby Rick Spivey » Thu Jun 16, 2022 6:55 pm

I can't say that I've ever seen a piston with 3 compression rings in addition to the oil wiper ring. Can someone more knowledgeable confirm if the thin top ring groove is for a compression ring, or something else?
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Re: Farmall 140 engine question

Postby Dave Hull » Thu Jun 16, 2022 7:25 pm

Hello Rick,
The Pistons and three compression rings each, I think this picture is the one where we took one ring off and slid it down in the bore to Check ring gap

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Re: Farmall 140 engine question

Postby Boss Hog » Fri Jun 17, 2022 1:24 pm

looks like a 140 123 fire crater piston with a set of 113 rings on it
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Re: Farmall 140 engine question

Postby Dave Hull » Fri Jun 17, 2022 4:05 pm

I was doing some digging around looking at images on the Internet and I seen some sealed power brand pistons that are the style top on this dome so I’m guessing maybe it was an aftermarket kit unless someone knows of seal powered supplied some for production?
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Re: Farmall 140 engine question

Postby tst » Sat Jun 18, 2022 10:11 pm

just bought pistons for the one I have apart now just like those from Reliant

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Re: Farmall 140 engine question

Postby Ole Timey Farmin » Sun Jun 19, 2022 2:48 am

Dave Hull wrote:I was doing some digging around looking at images on the Internet and I seen some sealed power brand pistons that are the style top on this dome so I’m guessing maybe it was an aftermarket kit unless someone knows of seal powered supplied some for production?


I used to own an automotive machine shop and was surprised to find out that there was only 6 major suppliers of valve in the WORLD, even less than that for camshafts. If you buy a cam you have a 96% chance it came from only 1 of 4 companies. So don't be surprised if parts from an OEM or a company known for racing parts are the exact same except the box or the price tag on them.


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