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Re: MM Power units

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01-17-2014 22:24:42

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I guess I am a little suprized that both of these engines show to be two cylinder block engines when I have always heard of 1948 as the year the UT went from one 4 cyl. block to 2-2 cyl. blocks. Guess M/M had perfected the 2 cyl. setup before it went in the tractors.


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01-19-2014 22:27:40

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 Re: MM Power units in reply to shinnery, 01-17-2014 22:24:42  
The "cast in Pairs" engines went back to Twin City, they developed them. MM Continues to make & Improve them, right on up to the HD800. I always heard old-timers say, that the decided it was a mistake to go with the single blocks on the MT & KT, which led to the U, and went back to tractors using the split blocks. That was a MM adv. gimmick, rebuild only the part of the engine that needs it.

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01-18-2014 06:01:52

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 Re: MM Power units in reply to shinnery, 01-17-2014 22:24:42  
The KE or solid block engine was used in the U series tractors until the late 40s. The larger engines were separate; 2cyl per jug design. That is also the case on the Twin City tractors. I do not recall the T/C numbers; but; the tractor replaced by the U series was single block; The tractor replaced by the G series was "split" design. (GTA; GTB; GTC). U is 283 c.i. & G is 403. 605 is same design engine with 2 more cylinders than 403. Jugs; pistons; etc.. interchangeable.

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