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Fluidampr Harmonic
Dampers for Chevy/GM Duramax |
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Why your engine needs a damper
Each time the air/fuel mixture inside a cylinder is ignited, the
combustion that occurs creates a torque spike that is applied to
the crankshaft through the piston and rod. This torque spike is
so severe that it not only turns the crankshaft, it actually
twists the crankshaft ahead of its normal rotation and then the
crankshaft rebounds. This twisting action is known as torsional
vibration. When these torque spikes and forces get into phase
with the natural frequency, critical torsional harmonic
vibrations occur and can be seriously destructive to the
bearings and the crankshaft. Dampers are designed to control
those destructive vibrations.
Rubber VS Silicone Fluid
Critical harmonic vibrations occur numerous times in a engine’s
operating range. Stock rubber and elastomer-type dampers are
frequency sensitive "tuned absorbers", and work at only one
critical frequency. In the case of a stock rubber damper, it is
tuned for a factory engine’s critical harmonic vibrations. If
you change the mass of pistons, rods, or the crankshaft, you
change the natural frequency of the crankshaft assembly;
therefore, the stock damper is no longer tuned to the new
frequency of vibration, and you may be headed for early failure
of expensive engine components. Dampers also create heat while
they work, and rubber is a poor dissipater of heat. This heat
and the exposure to the elements deteriorates rubber, causing it
to crack and change durometer, which then leads to inertia ring
slippage, damper failure, uncontrolled torsional vibration, and
costly engine parts breakage.
All Fluidampr Dampers are finished in black zinc chromate.
Fluidampr Harmonic Damper for 2001-2005 Chevy/GM
6.6L Duramax LB7 and early LLY
Part #: FLD-890101
Price $414.95 |
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Fluidampr Harmonic Damper for 2006-2007 Chevy/GM
6.6L Duramax LLY/LBZ
Part #: FLD-830111
Price $414.95 |
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