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1947 carb.
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- 5+ Years
- Posts: 34
- Joined: Sun Apr 24, 2016 3:25 pm
- Zip Code: 29927
- Tractors Owned: 1947 Farmall Cub S/N 10952
1947 carb.
My 1947 cubs, carb. leaks real bad. Should i rebuild myself or buy new? What do you think?
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- Team Cub
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Re: 1947 carb.
Much cheaper to rebuild it or have someone do that. If it's leaking where the halves join together, the top is likely warped and the gasket is bad. When you separate the two halves, pull them straight apart or you'll break off the idle tube. If there is debris in the needle valve seat, that could also cause leaking.
"We don't need to think more,
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-Albert Einstein
we need to think differently."
-Albert Einstein
- Glen
- 10+ Years
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Re: 1947 carb.
Hi,
Here is a post where I wrote 3 posts about the IH carburetor, it has info about rebuilding it.
They can drip on the ground when sitting from dirt in the needle and seat, like Bob wrote above, or the needle and seat wears out after years of use, and needs replacing, or the float level can be too high, or more than one of those.
viewtopic.php?f=1&t=96200
Here is a post where I wrote 3 posts about the IH carburetor, it has info about rebuilding it.
They can drip on the ground when sitting from dirt in the needle and seat, like Bob wrote above, or the needle and seat wears out after years of use, and needs replacing, or the float level can be too high, or more than one of those.
viewtopic.php?f=1&t=96200
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- 5+ Years
- Posts: 34
- Joined: Sun Apr 24, 2016 3:25 pm
- Zip Code: 29927
- Tractors Owned: 1947 Farmall Cub S/N 10952
Re: 1947 carb.
Hi, Glen Do you know where the sn. is located on the 1947 IH carb?
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- Team Cub
- Posts: 11817
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- Circle of Safety: Y
- Location: CO, Longmont
Re: 1947 carb.
It's on the flat surface of the top above the float bowl. They are often obliterated if someone bangs on the top to try and loosen a stuck float. It will be a part #.
Bob
Bob
"We don't need to think more,
we need to think differently."
-Albert Einstein
we need to think differently."
-Albert Einstein
- Glen
- 10+ Years
- Posts: 6096
- Joined: Mon Mar 19, 2012 7:33 pm
- Zip Code: 00000
- Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
- Circle of Safety: Y
- Location: Wa.
Re: 1947 carb.
Hi,
The Cub IH carburetors had a part number stamped on the top, on the edge of the bowl. It is easy to see it, if it is there.
I think I have read on here that replacement carbs have no number there.
If you are buying a rebuild kit, I don't know if the place you are buying it would ask for the number.
The Cub IH carburetors had a part number stamped on the top, on the edge of the bowl. It is easy to see it, if it is there.
I think I have read on here that replacement carbs have no number there.
If you are buying a rebuild kit, I don't know if the place you are buying it would ask for the number.
Last edited by Glen on Wed May 31, 2017 12:04 am, edited 1 time in total.
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- 5+ Years
- Posts: 34
- Joined: Sun Apr 24, 2016 3:25 pm
- Zip Code: 29927
- Tractors Owned: 1947 Farmall Cub S/N 10952
Re: 1947 carb.
Thinks, looks like there are 2 or 3 rebuild kits for it. According to the old owner it has never been rebuilt. It has the IH on the side of the bowl.
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- Team Cub
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- Circle of Safety: Y
- Location: CO, Longmont
Re: 1947 carb.
Before you buy a full kit, I'd suggest opening it up and taking a look. You may only need to flatten the top and replace the body gasket. As I said before, be careful you don't break off the idle tube.
"We don't need to think more,
we need to think differently."
-Albert Einstein
we need to think differently."
-Albert Einstein
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Re: 1947 carb.
If you can bring your carb to Cub-o-lina Cubfest you can probably get it fixed up and have an enjoyable weekend. Sanford, NC. June 16, 17th. viewtopic.php?f=8&t=92315
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
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Re: 1947 carb.
If there were not modification to the engine on the '47 the carb should be a IH 251234R94
Last year I put an IH 364579R91 on my mostly original 1949 and it was not happy running very rich. The same 364579R91 on a later cub ran fine and a 251234R94 on the '49 ran fine. Both carbs were freshly rebuilt by Mike Finch in MI and had main jets and idle tubes correct for the part numbers.
That is just my experience and I do not know if your setup is the same.
Last year I put an IH 364579R91 on my mostly original 1949 and it was not happy running very rich. The same 364579R91 on a later cub ran fine and a 251234R94 on the '49 ran fine. Both carbs were freshly rebuilt by Mike Finch in MI and had main jets and idle tubes correct for the part numbers.
That is just my experience and I do not know if your setup is the same.
When you only have 9 horsepower you need to know the names of all of the ponies!
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