Posted by The Dukester on December 14, 2011 at 20:14:04 from (4.229.144.202):
In Reply to: Re: Farmall 400 posted by 37Chief on December 14, 2011 at 16:14:42:
Chief, you're a little incorrect there in your description...you've described the gas start/ diesel version of the 400 which was pretty popular by the time 400's were built. The rare all fuel or kerosene/tractor fuel burner has practically the same fuel system as a straight gas burner, there's no injectors or injection pump on the engine, just a heat shield around the special exhaust and intake manifold. There is a small gas tank for starting and warming the engine up on. When the engine is warmed up enough you shut off the gas supply and turn on the fuel supply with little fuel valves in each supply line. The carburetor and throttle system is virtually the same as on the straight gas burners. The all fuel burners have somewhat lower power ratings than the straight gas or diesel models because the fuel just doesn't have quite the BTU's of diesel and doesn't burn as readily or quite as clean as gasoline because it doesn't mix as readily with air and requires a lower compression ratio to eliminate pre-ignition knock from exploding instead of burning.
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