Fluidampr Steel Internally Balanced Damper For 2015-21 Subaru WRX, 13-21 BRZ - 571101

FLUIDAMPR PERFORMANCE DAMPER FOR SUBARU

Here, you are looking at the Fluidampr High-Performance Harmonic Balancer. The Fluidampr unit is a torsional vibration damper. It has been designed to provide durability by controlling destructive vibration. As you perform performance upgrades that add more horsepower and torque to your vehicle, you risk overworking your stock engine damper, and changes to your rotating assembly can shift destructive engine harmonics. The Fluidampr unit will provide protection across the entire RPM range and can accommodate future engine modifications without the need to re-tune, and is a proven product utilized and trusted on high-horsepower applications.

FLUIDAMPR VS LIGHTWEIGHT CRANKSHAFT PULLEY

Testing revealed consistent performance gains above 4000rpm compared to both an OEM tuned elastomer damper and a lightweight crankshaft pulley. The lightweight crank pulley tested provided no torsional vibration protection and left internal components susceptible to potentially destructive high frequency vibration between 5,000 – 7,000rpm.

CRANK PULLEY WEIGHT CONSIDERATIONS – LIGHTER IS NOT ALWAYS BETTER

Comparative gains between 4,000rpm – 7,000rpm at only 150rwhp on a near stock Scion FR-S were noticed. Why did the Fluidampr, at 4.6lbs heavier than the 1.195lbs lightweight crank pulley, come out on top? “Excessive crankshaft torsional vibration robs power and accelerates component wear. You need proper mass with broad range damping to control it. The more power you add, the more you need to upgrade to a quality viscous damper for durability and optimum performance,” concludes Vibratech TVD / Fluidampr Sr. Design Engineer, Aaron Neyman. “Mass also determines where rotating assembly resonance points will occur. As shown during testing, without proper mass the lightweight pulley shifted a new high frequency resonance point into the operating range. This became prevelant in the 6th order vibration amplitude comparision. Flywheel/flexplate, crankshaft, rod & piston changes can all have similar harmonic effects.”

The second advantage in favor of the Fluidampr performance damper is the concept of rotating weight. While the overall weight is 5.8lbs, because the inner inertia ring is not bonded and freely rotates, its weight is not fully felt by the crankshaft once the engine is operating. It can be calculated that the rotating weight of a viscous damper is roughly 2/3 its overall weight. Meaning at rpm, the rotational weight spinning in unison with the crankshaft feels more like 3.8lbs. That, plus broad range damping, gave it the edge over the stock tuned elastomer damper.