H Farmall Experts.....

Goose · Sep 21, 2014

How can you tell if a cylinder head on a 1941 H is for a distillate engine or pure gas engine?

I have one that has the hole in the hood for the starting gas tank, but no tank, and has the carb for a pure gasoline model. I assume there is a casting number or other identification somewhere. My shop manual isn't any help.

Zachary Hoyt · Sep 22, 2014

Casting numbers are on top. 8776 is kerosene or distillate, I forget which. 8043 is gas with higher compression. I can't remember the other one now.
Zach

rustyfarmall · Sep 22, 2014

(quoted from post at 04:41:18 09/22/14) Casting numbers are on top. 8776 is kerosene or distillate, I forget which. 8043 is gas with higher compression. I can't remember the other one now.
Zach

Yes, the numbers are on top, but not visible until the valve cover is removed.

Goose · Sep 22, 2014

Thanks to both. I'll check the numbers out. I bought this H on an auction in January, and I've never been able to get it to run as smooth as it should. I've gone through the carb once and through the ignition, even checked the valve lash, and nothing helps.

It has the pure gasoline carb on it, so I got to wondering what head it has, and if the carb wasn't matched to the head if that could be the problem.

rustyfarmall · Sep 22, 2014

(quoted from post at 10:05:03 09/22/14) Thanks to both. I'll check the numbers out. I bought this H on an auction in January, and I've never been able to get it to run as smooth as it should. I've gone through the carb once and through the ignition, even checked the valve lash, and nothing helps.

It has the pure gasoline carb on it, so I got to wondering what head it has, and if the carb wasn't matched to the head if that could be the problem.

There is very little difference in the carburetors. In fact, almost none at all. Most of the distillate model carbs have already been rebuilt using the gasoline only internal components. Either carburetor will work equally well with either head.

crate78 · Sep 22, 2014

Thanks. Might save me some time.

Rollie NE PA · Sep 22, 2014

I bought a H that had the same problem as you describe and I did the same as you did to try and solve the problem. The previous owner said the tractor never ran right after he had the engne rebuilt and he had tried everything he could think of to make it run right. It turned out that when the engine was rebuilt it had the wrong valves installed. The rebuilder had installed valves for high altitude operation.
I found the differance in valve stem height when I measured the stem height on one of my other H's. Good luck!

crate78 · Sep 22, 2014

I might check that. I have another H that's been in the family for 50 years and has always run great. Pulling the valve covers is no big deal.

Thanks.

H Farmall Experts.....

Goose

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Zachary Hoyt

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rustyfarmall

Well-known Member

Goose

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rustyfarmall

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crate78

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Rollie NE PA

Well-known Member

crate78

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