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Farmall C Head Gasket

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Robert Lorencz

12-28-2005 07:12:22

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I have a 1950 Farmall C that I am having problems with anti-freeze leaking into oil pan. Before I bought it, the owner changed the head gasket before he would sell it to me. Everything seemed ok for awhile, now problem is back. I pulled the pan to see if any sleeves were leaking but it is hard to tell. I'm going to pull the head today. I recall when the guy replaced the head gasket last time that he told me that it had 3 1/8 pistons in it. Something makes me think he may have put a head gasket on for a 123 engine. Should the head gasket be for a 113 engine regardless of overbore?
Engine PN is 251069R1.
Thanks

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Hendrik

12-29-2005 00:46:06

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Re: Farmall C Head Gasket in reply to Robert Lorencz, 12-28-2005 07:12:22

Had same problem with my Super A. Water would leak into pan with engine running but would not visibly leak with engine stopped and pan removed. Removed radiator and made an adapter from garden hose to water outlet on head. After blocking water inlet at the bottom of the block I pressurized the cooling jacket of the block by turning the tap on. The leak at the bottom of a sleeve was VERY obvious then. It transpired that the bottom end of the sleeves was badly corroded were it seals against the O-ring. HTH, Hendrik

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Roger46

12-28-2005 19:36:05

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Re: Farmall C Head Gasket in reply to Robert Lorencz, 12-28-2005 07:12:22

Several years ago I had problems with the head gasket on my Super C leaking. The former owner had just done an overhaul of the engine including new pistons and sleeves. The problem was that the sleeves stuck up above the block too far and wouldn't let the head gasket seal. I can't remember the exact amount, but mine stuck up over twice the maximum distance. May want to check that also. I think in my case the former owner had the block decked and they didn't increase the sleeve ridge depth. I ended up having the sleeves machined off on top at the local machine shop. Roger

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Robert Lorencz

12-29-2005 07:19:48

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Thanks for the Ideas in reply to Roger46, 12-28-2005 19:36:05

Thanks Roger and Hendrik.
I checked the sleeves and they are flush with the head. I found a few of the head studs were loose and not fully seated in the head so I fixed that. The head gasket did not have any sealer applied to it and came off easy, as it should have as it was only installed last year! This engine seems to have not run hardly at all since a motor job, as there is no ridge on the cylinders at all. I suspect that the engine was done shortly before it was sold to the guy I got it from, he didn't do anything to the tractor, it sat around for a couple of years.
I have to go away for a week but when I get back I will fill the water jacket with water and look for leaks around the sleeves. If I don't see any then I think I will try the pressure trick. Of course I will have to reassemble the head and torque it down to do that!

Thanks again for the help.

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Robert Lorencz

12-28-2005 12:22:42

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Re: Farmall C Head Gasket in reply to Robert Lorencz, 12-28-2005 07:12:22

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Thanks for the comments. Shaggy - I checked the torque, all were good at 80#. Hal, I pulled the pan last night and didn't notice big amounts of anti-freeze this morning, just some minor watery/oily drips. I pulled the head and didn't see anything out of the way, I put some photos in "Stuck and Troubled". As I suspected, the pistons are 3 1/8.
Randy I looked at the gasket, the holes in it line up well with the head, but not so well with the block. I had read your previous posts about the gasket which had me going in this direction. On this gasket, the hole cut outs for the cylinders are 3 3/8.

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Robert Lorencz

12-28-2005 12:27:38

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Re: Farmall C Head Gasket in reply to Robert Lorencz, 12-28-2005 12:22:42

here is a pic of the head with gasket in place

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Robert Lorencz

12-28-2005 12:25:40

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Re: Farmall C Head Gasket in reply to Robert Lorencz, 12-28-2005 12:22:42

Here is a pic of the block

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gene bender

12-28-2005 12:17:36

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Re: Farmall C Head Gasket in reply to Robert Lorencz, 12-28-2005 07:12:22

Pull the pan and let it set for a couple days and then look at the bottom of the sleeves for the coolant you should see drops of coolant somewhere if the o-rings are leaking.

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Randy in NE

12-28-2005 09:53:08

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Re: Farmall C Head Gasket in reply to Robert Lorencz, 12-28-2005 07:12:22

You will need a head gasket for a 123 cid motor due to the increased diameter of the 3 1/8 pistons. The problem that I ran into was the only headgaskets made for a 123 cid assumed that you have a water pump so all of the water ports are much smaller than those for the 113 cid. The ports are all in the same location, just smaller. The trick to enlarging the holes is to do it neatly without tearing up the head gasket. Check the archives as this was discussed a couple of weeks ago.

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El Toro

12-28-2005 07:57:45

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Re: Farmall C Head Gasket in reply to Robert Lorencz, 12-28-2005 07:12:22

I would set a tub under the engine to make sure those sleeve seals aren't leaking. If there's no leakage from the sleeves, I would check that head for flatness and I think I would have it magnafluxed too. A cracked head can result in coolant getting into the oil. Hal

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Shaggy

12-28-2005 07:31:25

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Re: Farmall C Head Gasket in reply to Robert Lorencz, 12-28-2005 07:12:22

Try retorquing the head gasket to 80ft lbs but remember to readjust the valves when you put it back together.

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