06-24-2012, 03:50 AM
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CC Member
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Join Date: Sep 2006
Location: Skjetten,
No
Cobra Make, Engine: Unfortunataly ; none
Posts: 333
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Not Ranked
It's an inherited disease of the Ford engine.....
For a factory crank it is "balanced" either with a 28 or a 50 oz external balance. This means that both the rear flywheel and the front balancer has the appropriate weight at the correct spot in the rotating, outer part of the radius.
If you use the wrong weight- or the weight is at a wrong place, the engine will not run smooth- there will be very, very unpleasant harmonics coming from the crankshaft.
However.... You can get aftermarket cranks that have 0, or internal balancing where the mass of the crank throws and pistons/ rods themselves make the assembly balanced. In such a case the flywheel and balancer need to have 0 balance as well.
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