Farmall M head

Bob D 42 · Jul 21, 2010

What is the difference between the Gasoline and distillate heads on the Farmall m, How can they be interchanged

3500sport · Jul 21, 2010

I believe distillate engines had a lower compression ratio so I would imagine at the least they have bigger combustion chambers, which could probably be ratified with a dome top piston.

rustyfarmall · Jul 21, 2010

(quoted from post at 13:23:30 07/21/10) What is the difference between the Gasoline and distillate heads on the Farmall m, How can they be interchanged

The distillate head is lower compression than the gasoline head. Other than that there is very little difference and the 2 will readily interchange. Putting the distillate head on a gasoline engine will result in less horsepower, but depending on how the tractor is used, you may not notice any differance.

randy hall · Jul 21, 2010

like rusty said the combustion chamber is a lot deeper and that makes the valves shorter. there is quite a difference in power. m+w made pistons with a inch tall dome to raise the compression on a low compression engine. useing a distillate head will turn your m into an h for power.

Farmall M head

Bob D 42

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3500sport

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rustyfarmall

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randy hall

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