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Old 08-21-2013
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Re: Atomic Diesel 5432 Fresh Water Pump

There used to be a document titled History of the Universal Motor Company in numerous places on the web... It seems to have been deleted from most locations (I wonder why).

Here are the salient points:

First Universal diesel: 5416, it was a 45 cu in, 16 hp, 2 cylinder, based on the Kubota Z-751 block and built from 1976 to 1982. Evolved into the Model M20, which was produced in 1982 and 1983.

5411 was a 31 cu in, 11 hp 2 cylinder raw water cooled diesel, based on the Kubota Z-500 block. Built from 1977 to 1982. Replaced by the Model M15, which was produced in 1982 and 1983.

The Model 5424, was a 68 cu in, 24 hp, 3 cylinder, based on the Kubota D-1101 block. Built from 1977 to 1983. Replaced by the Model M-30, which was produced from 1983 to 1987. The Model M-30 was the same size, but later M-30 engines were based on the Kubota D-1102 block. It was built from 1983 to 1987.

Universal 5421, a 52 cu in, 21 hp, 3 cylinder, based on Kubota D-850 block. Built from 1978 to 1981. Replaced by the Model M25, which was produced from 1981 to 1986. Replaced by the Model M-25XP, a 57 cu in, 23 hp, 3 cylinder, based on the Kubota D-950 block, built from 1986 to 1999.

5432, a 91 cu in, 32 hp, 4 cylinder, based on the Kubota V-1501 block, was built from 1978 to 1982. Also called the Atomic diesel. Replaced by the Model M40, which was produced from 1982 to 1998. The Model M-40 was also a 4 cylinder model, and the same size at 91 cu in and 32 hp but it was based on the Kubota V-1502 block.

Model 5444, a 115 cu in, 44 hp, 4 cylinder, based on the Kubota V-1902 block, was built from 1980 to 1982. Replaced by the Model M50, which was built from 1982 to 1997.

M-12, a 24.4 cu in, 10 hp, 2 cylinder based on the Kubota Z-400 block, was built from 1983 to 1988.

M-18, a 34.8 cu in, 14 hp @ 3,200 rpm, 2 cylinder, based on the Kubota Z-600 block, was built from 1983 to 1988.

Model M2-12, a 26 cu in, 11 hp, 2 cylinder, based on the Kubota Z-430 block, was built from 1987 to 1997.

M-35, a 75.5 cu in, 30 hp, 4 cylinder, based on the Kubota V-1200 block, was built from 1987 to 1997.

M-35A, a 4 cylinder engine producing 22.3 kW / 30 hp at 3,200 rpm - details unknown

M3-20, a 38.9 cu in, 18 hp, 3 cylinder, based on the Kubota D-640 block, was built from 1988 to 1997.

M3-20A, a 3 cylinder engine producing 13.4 kW / 18 hp at 3,600 rpm - details unknown

M4-30, also called the Atomic Four diesel, a 52 cu in, 25 hp, 4 cylinder, based on the Kubota Y-850 block, was built from 1988 to 1997. Offered as a diesel replacement for the original Atomic Four gasoline engine. It was similar to its namesake, since it was a 4 cylinder model weighing slightly less (122 kg / 270 lb as opposed to the original’s 150 kg / 330 lb with reduction drive - the M4-30 was only offered with a reduction drive) and generating slightly less power (18.6 kW / 25 hp at 3,600 rpm as opposed to the original’s 22 kW / 30 hp at 3,500 rpm) with a smaller displacement (850 cc / 52 cu in as opposed to the original’s 1,065 cc / 65 cu in).
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