Fast Fred's Secrets of the OMC MOD50's Thread #1

[Fast Fred]

Thare are three power heads, guna talk about the first one the 19s.
this is a Tradewinds motor,port exhaust standard 49ci case + .030
uses the long rods same size as the Big twin, thare are mod 50 rods,
the dif' bein the wrist pin hole, stock mod 50 rods run the big wrist pin and caged wrist pin bearing. the big twin rod is the best set up, thay make a kit to run the big wrist pin in the small rod hole with full complament bearing.
steal crank, the stock mod50 19s pistons are two ring dome style with finger port tranfur holes. the case it self is the same as the production case,
the rib under number three exhaust port is cut to let water run in to case , this moda ran no thermostat, did have a water pump, 6 amp alternater,
the exhaust exit is also cut to except the mod 50 exhaust plates.

the front 1/2 on this one has the same jog as the stock intake with 4 over 4
pedal reed blocks, the reeds also had two smaller reeds on top that sat sideways with three 1" 2bbl carbs. was lookin for 100-130oct avgas out of the box.

the Preface of the Owner Manual

" This motor has been engineered and assembled to give the professional race driver, who desires to have a motor with extra capability, a motor which incorporates very high performance with quality and workman ship."
thares more but to the point
I've heard alot about how much hp this moda made on gas, 200hp, 150hp, 135hp, not !!!!!!!!! like it or not 100hp-105hp @7200rpm
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