(608) 583-2200 420 E. Forest St. Lone Rock, WI 53556

PDI Crank Dampeners

Our viscous torsional damper is a design that consists of a free rotation inertia ring surrounded by a viscous silicone fluid enclosed in a laser welded, sealed housing. When crankshaft torsional vibrations occur, the outer housing of the damper reacts with the crankshaft, twisting as it rotates, while the inertia ring attempts to rotate at a constant speed. This relative motion between the inertia ring and housing causes the inertia ring to shear the silicone fluid, which reduces the destructive torsional vibrations of the crankshaft. When left unchecked, these vibrations may lead to a cracked or broken crankshaft, valve train problems and premature bearing wear.

For more information about our Viscous Crank Dampers, or for help with any of your performance needs, contact GJ’s Service LLC, an authorized PDI dealer at (608) 583-2200 or Contact Us and ask our staff.

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