Fluidampr Harmonic Damper from Summit Racing Equipment - Engine Builder Magazine

Fluidampr Harmonic Damper from Summit Racing Equipment

The factory harmonic damper on your modern GM, Ford, or Mopar V8 are ‘tuned’ to absorb what’s called torsional vibration in the engine’s normal operating RPM range. Performance modifications, particularly ones that increase torque, produce added vibration in an RPM range that the elastomer damper wasn’t designed to handle. That vibration will accelerate component wear, affect valve timing, and increase the risk of engine failure.

A Fluidampr Harmonic Damper can keep torsional vibration in check to protect your engine and even recover lost horsepower and torque. A Fluidampr has an outer housing that mounts to the crankshaft and an inner steel inertia ring surrounded by a viscous silicone fluid. When the engine’s combustion cycle triggers torsional vibration, the outer housing and inner inertia ring move in and out of phase with each other. The inner inertia ring then shears through the silicone fluid, transforming destructive vibration to heat. That heat then safely radiates through the outer housing. The process means a Fluidampr can control all crankshaft vibration–not just a limited frequency range–at all RPMs. They won’t crack or separate like rubber-based dampers, and never need to be rebuilt or tuned.

Fluidampr Harmonic Dampers are CNC-machined for precise fit and balance and are SFI 18.1-certified for racing use. They’re available for these late-model engines:

• Ford Coyote 5.0L

• Ford Godzilla 7.3L

• GM Gen V LT4 and L8T

• Chrysler Gen III Hemi 6.2L supercharged

•  Chrysler Hemi 6.2L supercharged, 11% overdrive

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