The C-123/C-113 motor that powered bunches of Farmall tractors (A, Super A, 100, 130, 140, 240, and more) was produced up through 1979. Looking at Old Oak Farmalls, it looks like the C-113 was used in the F-series, too. Is that true?The other question is: are H and M motors just larger derivatives of the C-113 design? Different blocks, cranks, rods, pistons but in terms of valve train, combustion chamber and other design aspects do they share the same design traits? In other words, just scaled-up bigger versions of the C-113 design? You know, the C-113 is a "modern" motor by 1930's standards what with its overhead valves arrangement. If it was also being built in the 1920's then I'd say Farmall was making advanced motors for that era. The other observation is the long production run for the design (mid-1920's? through 1979). Except for the small block Chevy V-8 design, there's not many motor designs continuously manufactured over a 50+ year period. Setting aside all of the above talk, what I really like about my 140's motor is the way it sounds when it is pulling hard, when it is idling and when it is slowly lugging into and out of the shed. It's music, man, music.
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