Vehicle Fitment
| Make | Model | Year |
|---|---|---|
| Dodge | DM350 | 1991 |
| M-Series Chassis | 1968-1974 | |
| RM300 | 1971, 1973-1974 | |
| RM350 | 1971, 1974 |
Product Details
Harmonic Damper Balancer by Speedmaster®. Speedmaster Harmonic dampers are manufactured from forged K1045 low carbon steel and tuned elastomer between the two layers of steel. These dampers feature a bonding process which adheres the elastomer to the i.d. of the inertia ring and the o.d. of the hub, utilizing a strong adhesive along with an improved elastomer to create a much stronger bond. They also feature clear, white, easy-to-read timing marks against a painted black background. The steel inertia ring rotates harmonically with the engine and absorbs the torsion vibration from the rotating assembly at any frequency and RPM. It extends the life of crankshaft and bearing which allows the engine to produce more power and torque. Designed utilizing the latest technology, this product by Speedmaster features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards.
Notes
- Not Included Mounting Hardware.
Specifications
| Outside Diameter: 7.250" |
| Material: Steel |
| Finish: Black Zinc Chromate |
| Engine Balance: Internal |
| Harmonic Balancer Construction: Elastomer |
| Degree Marking Range: 50 BTDC to 270 TDC |
| Quantity: Single |
| Safety Rating: SFI 18.1 |
Features
- Created by professionals to meet your requirements
- Superior longevity and dependability
- Expertly Crafted using premium-grade materials
This damper is externally balanced; the term external balanced damper refers the built in weight or offset in the casting. When identifying your existing damper, (balancer) you must look on the backside. This is not visible if the damper is mounted on the engine. If your damper has no offset in the casting or weight, then you have an internal, (neutral)style damper. If you do see the offset in the casting or a weight, you have what is classified as an external damper. All dampers are tested to withstand 15 tons press force without separation or deterioration.
What SFI 18.1 Certified Means
Section 18.1 refers to Crankshaft Hub Harmonic Dampers. Article 3.0 Construction, dictates that the damper shall be constructed in such a manner that the inertia devices shall not become disengaged during use. For inertia disc style dampers, the containment device must cover a minimum of 50 percent of the cavity containing the disc. The thickness of the containment material must be a minimum of 0.062 inch steel or 0.180 inch aluminum. Article 5.1.3 B Testing Procedure mandates that. The damper shall be driven to a rotational speed between 12,500 and 13,500 rpm and maintained at that level for one hour. Furthermore, the steel of a SFI certified Fluidampr housing must meet a minimum 40,000psi yield strength and 60,000psi tensile strength under testing.
Founded in 1979, Speedmaster® has become a leader in its field, built on a long term consistency of being a specialist in aftermarket automotive components. It began as a small speed workshop building engines for customers as a hobby, and now the company has grown from a one-man bricks-and-mortar business into a worldwide high-performance powerhouse known for assembling, manufacturing and racing high-performance engine parts. Speedmaster’s mission is to push innovation boundaries to create visually distinctive DNA, by blending old and new technology into functionality and aesthetics. Its empowered work forced drives innovation not only in the products it makes but with the way it goes about doing it. The ultimate token of precision, Speedmaster is the world’s only major parts manufacturer to equip cars from Standard replacement to Top Fuel Dragsters. Surviving the longevity of road, race and recreation is mandatory for all Speedmaster “Track Proven” products, bringing you closer to product perfection.
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