Fluidampr Harmonic Balancer Internally Balanced Damper for 2JZ Toyota Supra (840801)
Fluidampr Engine Dampers mitigate destructive vibrations transmitted through the crankshaft by controlling torsional vibrations. These vibrations, caused by torque spikes during combustion, can damage engine components. Unlike stock rubber dampers, Fluidampr dampers work across a broader range of frequencies, crucial for engines with modified components. Rubber dampers are frequency-sensitive and may fail when engine dynamics change. Additionally, rubber deteriorates over time, leading to potential damper failure and engine damage on your Toyota Supra.
Vehicle Fitment:
1987-1998 Toyota Supra
1992-2000 Lexus SC 300
1993-2005 GS300
2001-2005 IS300
(1JZ / 2JZ I6. Internal balance)
More Info:
Fluidampr Engine Dampers are designed to control destructive vibrations which are transferred through the crankshaft.
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.
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 dissipator 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.
Vehicle Fitment:
1987-1998 Toyota Supra
1992-2000 Lexus SC 300
1993-2005 GS300
2001-2005 IS300
(1JZ / 2JZ I6. Internal balance)
| Part Number: | 840801 |
| Degree Marking Range: | 31 Timing marks 2 degrees apart and one @180 degrees |
| Engine Balance: | Internal |
| OD: | 8-1/2" |
| Bore Diameter: | 1.3783" |
| Length: | 2.096" |
| Weight: | 9.4 pounds |
| Rotating Weight: | 6.2 pounds |
| Finish: | Black Zinc |
| Marerial: | Steel, Aluminum Pulley |
| Safety Rating: | SFI 18.1 |
More Info:
Fluidampr Engine Dampers are designed to control destructive vibrations which are transferred through the crankshaft.
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.
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 dissipator 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.
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