The bore spacing and (thus) length of crankshaft must be longer to accomodate the added bearings. Long stroke (under square) engines can (in the 1920s) when these were born) could be operated at less than 2000 and had enough crank stiffness to make it work. When we put 50% more air in the engine (and fuel) the engine makes lots more power. Compression (effective) can reach 200psi and real racing fuel is needed. Timing cannot be advanced much more than 15 degrees from TDC unless the engine speed reaches 3000 to 4000 RPM. which now again doubles the HP if the intake and exhaust valve timing allows for it (cam not stock). Rods and mains and journals designed to be robust at 55HP look like pot metal at 125. Holding together is one thing, running for hours is another. Tearing down a M is trivial, but after 5 times real expensive, and real boring. One must realize also that the trophies are 20$ items. I understand toys and have my share of non stock stuff. (most of it is non stock) but it is reliable and stronger, not a design for detonation (in the big sense) No offense to all who put big money and time into racing or Pulling, one just has to be able to afford it. Jim
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Today's Featured Article - Tractor Profile: Earthmaster - by Staff. This tractor, manufactured by the Earthmaster Farm Equipment company in Burbank, California was made for only two years. The Model C came out in 1948 and was followed by the "CN" (narrow-width model), "CNH (narrow-width high-crop model), "CH" (high-crop), "D" and the "DH" (high-crop) in 1949. The main difference between the models was tire size, tractor width and cultivating height. The "D" series were about 20 inches wider overall than the
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1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
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