Farmall Super M Head

IH-Mitch · Jun 6, 2009

My friend just got a Super M and it started to miss after a couple of minutes so i went over there to try to help. So i started with pulling spark plug wires off the distributor and found out that the cylinder closest to the gas tank was not firing. So we pulled the plug and its coolant. Checked the oil and it was there to. Today we pulled the head off and found the crack. Now im looking for a head for him and was wondering what other tractors used the same head as the Super M?

Thanks

Janicholson · Jun 6, 2009

The SM, SMTA, 400, and 450, SW6 SW6TA W400 W450
all have compatible heads. (they are not the same, but should interchange well) JimN

IH-Mitch · Jun 7, 2009

So a plain M wont work?

Thanks

James Williams · Jun 7, 2009

Mitch,Cracks are repairable,any machine shop probally can fix it,and will be a lot cheaper than getting another head

jimmy

Janicholson · Jun 7, 2009

A plain M head will bolt on, but is not designed for the sleeve diameter, and has poorer performance.
To be careful, it will take some number hunting to assure that any thing other than a SM or SMTA head will fit perfectly. JimN

IH-Mitch · Jun 7, 2009

I don't know of any machine shops around here that will do it. I heard of sending them out to get done but that is just as much as it would be to get a different one.
Is there any bigger more common business around that you know of that would be able to fix them?

D Slater · Jun 7, 2009

If its a gasoline fuel head look for a casting # on top of head. Some late 52 M and W6 tractors came with the same head as SM,SW6, SW6TA and SMTA came with. Numbers 8060 DC or 8574 DB. later head numbers 8060 DD and 8574 DC would be good. Most other M heads with a lower ending letter suffix will work. Number series tractors gas heads for 400 and 450 will also work, but require a top end ventilation change, most times are higher priced and will raise the compression. Almost all heads from M to 450 will bolt on and can be made to work, performance of tractor will not be the same for some of them.
When looking for a head its best to go by the casting numbers, I would guess over half the tractors mentioned above don"t have the same heads that came on them. If your SM does I agree with James, if the crack is in a repairable place it may be best to have it repaired at a place with a good reputation unless you find a uncracked one for less.

rustyfarmall · Jun 7, 2009

(quoted from post at 06:26:17 06/07/09) I don't know of any machine shops around here that will do it. I heard of sending them out to get done but that is just as much as it would be to get a different one.
Is there any bigger more common business around that you know of that would be able to fix them?

What guarantee do you have that the used, replacement head you buy is not already cracked? If you repair the one you already have, the job is done.

IH-Mitch · Jun 7, 2009

I will get it taken some where or sent some where to get it fixed. If i were to get a used head i would have it checked at a carquest.

Thanks for the Help

Farmall Super M Head

IH-Mitch

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Janicholson

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IH-Mitch

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James Williams

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Janicholson

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IH-Mitch

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D Slater

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rustyfarmall

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IH-Mitch

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