Kinsler Handbook #32 May 2025

Kinsler Fuel Injection, Inc, 1834 THUNDERBIRD TROY, MICHIGAN 48084 U.S.A. www.Kinsler.com Phone (248) 362-1145 Fax (248) 362-1032 104 ® BECAUSE: ® One Piece Gear-Shaft High alloy steel, case hardened, precision ground, then pro prietary coated. Does not allow any radial movement of the gear on the shaft, thus maintaining correct clearance between the gear teeth tips and the housing. A two piece gear and shaft introduces more tolerance, which can allow the tips to scrape the gear cavity walls. Our one piece design enables our pump to ingest dirt and spit it out that would fail other pumps. Rock Solid Housing Evolved through housing deflection vs pressure tests. This final design is the strongest in the industry, combined with twelve 10-32 studs to super secure the extra rigid cover. MIL-Spec hard coated to +/- .0001” tolerance for consistent flow over a very long life. Good to 400 PSI; higher available. Steady Flow at EXTREME RPM The inlet port comes straight into the gears rather than making a 90 o turn like most pumps. This combined with special internal design features to feed the fuel to the gears gives EXCELLENT top-end performance.... up to 7,000 pump RPM (14,000 engine RPM) without cavitation. Our larger diameter roller bearings are rated at higher load (output pressure) and 2,000 more pump RPM than those of other brand pumps. Pressure Balance Plate System Our gear side plates are high alloy steel, heat treated very hard, ground to a 6 micro-inch finish, with end-to-end flatness of .0001”. These are coated with a harder-than-carbide composite, then lapped to a 2 micro-inch mirror finish. This coating is so smooth that the torque required to drive the pump is significantly reduced. One plate is moveable. It has pump outlet pressure fed under it to keep it in constant contact with the gear faces, which gives minimum pump output flow drop vs pressure, and compensates for housing expansion due to temperature, and wear. For excellent priming during engine cranking, two coil s prings keep the plate in contact with the gear faces. Exce l l ent Durabi l i ty Patent Pending © 2024 ONE PIECE GEAR-SHAFT