Description
Protect your engine. Modifications can compromise your stock harmonic balancer. Install a Fluidampr performance damper early for best durability. Superior viscous damper design controls harmful torsional vibration across the entire rpm range. Reduce wear on engine components. Reduce risk of crankshaft failure. Improve timing. Unleash lost torque and horsepower. Precision CNC machined and balanced high-grade steel components. Corrosion resistant black zinc finish with engraved timing marks. No maintenance required. Trusted by leading engine builders worldwide. SFI 18.1 certified. Made in USA.
Product Overview
Fluidampr Engine Dampers are designed to control destructive vibrations which are transfered thru 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 absorbersâ€, 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.
Features and Benefits
- Broad RPM range protection.
- Reduce risk of crankshaft failure.
- Reduce wear on critical engine parts.
- Unleash lost torque & horsepower.
- No maintenance required.
- Superior durability.
- SFI 18.1 spec. Race proven for over 35 years.
- Made in USA.
Product Details
| Year | Make |
|---|---|
| Bolt and Washer Included: | No |
| Bore Dia. Min/Max: | 0.9436 / 0.9446 |
| Degree Marking Range: | TDC |
| Degree Markings: | Engraved |
| Depth: | 1.927 |
| Description: | Fluidampr Harmonic Balancer |
| Drive Belt Type: | Serpentine |
| Engine Balance: | Internal |
| Finish: | Black Zinc |
| Inside Diameter: | 0.9436 |
| Keyway Type: | Single |
| Keyway: | Single |
| Length: | 1.927 |
| Material: | Steel |
| Mounting Hardware Incl.: | No |
| Mounting Hole Quantity: | 1 |
| O.D.: | 5-3/8" (5.375) |
| Outside Diameter: | 5-3/8" |
| Part Number: | fdr531101 |
| Prop 65 (C, R, or CR): | CR |
| Prop 65 - Short Label: | WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov |
| Prop 65 Yes/No: | Yes |
| Pulley Groove Quantity: | 4 rear, 5 front |
| Safety Rating: | SFI 18.1 |
| Title: | Fluidampr - 531101 - Harmonic Balancer - Fluidampr - Subaru - EJ - Each |
| WT. in lbs.()=Rotating weight: | 6.9 (4.6 Rwt) |
| Weight / Rotating Weight: | 6.9 lbs / 4.6 lbs |
Application Summary
Subaru. EJ series engines.
Part Type
Engine Harmonic Balancer
Features
- Broad RPM range protection.
- Made in USA.
- No maintenance required.
- Reduce risk of crankshaft failure.
- Reduce wear on critical engine parts.
- SFI 18.1 spec. Race proven for over 35 years.
- Superior durability.
- Unleash lost torque & horsepower.
Specifications
- Product Attributes - Brand
- Fluidampr
- Product Attributes - Manufacturer's Part Number
- 531101
- Product Attributes - Part Type
- Harmonic Balancers
- Product Attributes - Product Line
- Fluidampr Harmonic Dampers
- Product Attributes - UPC
- 815293002187
- Product Attributes - Engine Balance
- Internal
- Product Attributes - SFI Rating
- SFI 18.1
- Product Attributes - Degree Markings
- No
- Product Attributes - Outside Diameter (in.)
- 5.375
- Product Attributes - Keyway Quantity
- One
- Product Attributes - Harmonic Balancer Material
- Steel
- Product Attributes - Harmonic Balancer Construction
- Fluid
- Product Attributes - Harmonic Balancer Color
- Black zinc chromate
- Product Attributes - Mounting Hardware Included
- No
- Product Attributes - Quantity
- Sold individually.
- Product Attributes - Notes
- Weight is 6.9 lbs.
Reference Information
| Brand Name/s | Fluidampr |
|---|---|
| StreetFX SKU | fdr531101 |
| SFX Item ID | 4403598 |
| Supplier Item Code | 4403598 |
| Manufacturer SKU | 531101 |
| Manufacturer UPC | 815293002187 |
| Alternative References | FLU531101 |
Brochures
Compatibility
Subaru. EJ series engines.
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