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From The Tech Desk: What Does SFI 18.1 Mean?

Fluidampr SFI 18.1 spec"SFI Foundation Inc. (SFI) is a non-profit organization established to issue and administer standards for specialty/performance automotive and racing equipment.”*  Some standards are adopted as part of the rules of race sanctioning organizations.

SFI 18.1 stands for harmonic balancer construction quality.  Having a damper let loose on a race track is a serious safety matter.  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.

Today, nearly all Fluidampr performance dampers are SFI 18.1 certified.  Required SFI documentation needed for tech inspection is included with each damper. To meet this rigorous standard Fluidampr chooses premium American made steel, zero balances each inertia ring and housing on a sophisticated high speed computer balancer during manufacturing, and uses a nitrogen leak tested laser weld to seal the damper.

source: *http://www.sfifoundation.com

Fluidampr for Chevy/GM LS engines

Product Highlight:Fluidampr For GM/Chevy LSX Applications

Long lasting, maintenance free design automatically adjusts to modifications then continuously self-tunes in real time across the entire rpm range.  Brilliant black zinc chromate finish.  Multiple pulley options available. 

Visit our Chevrolet page for complete LSX applications and specs.