Posted by The Dukester on May 07, 2010 at 09:52:01 from (4.229.144.165):
In Reply to: Super MD vs. MD posted by AGR 538 on May 06, 2010 at 22:36:11:
The Super MD has the later style block that came with 4" bore cylinder sleeves increasing the cu. piston displacement of the engine to 264 inches vs. the 248 of the MD.. Other tuning tricks and slightly higher compression raised the PTO power from about 36 to 48 PTO horses and the drawbar power to about 44. The field speeds (2nd, 3rd, and 4th) were increased and the stage II versions had the live hydraulics available. Super versions also had the so-called better disc brakes (better maybe if kept cleaned up inside and free of rust and crud, otherwise unreliable and dangerous in that they can either fail or lock up). The "U" drawbar was made of heavier material as was the swinging drawbar and it had a roller on the support strap. As I recall these are the main differences.
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