One piece Gear-Shaft:
Combined with larger diameter roller bearings.... Gear teeth and shaft are high alloy steel, case hardened, then precision ground. Housing is hard coated for consistent flow over a very long life.
Can ingest dirt and spit it out that would fail any other pump.
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. Good to 400 PSI; higher available.
Steady Flow at EXTREME RPM:
The inlet port comes straight into the gears rather that making a 90deg turn like most pumps. This combined with special internal design features to feed the fuel to the gears gives EXELLENT TOP end performance....up to 7,000 pump RPM(14,000 engine RPM) without cavitation.
The larger bearings are rated at 2,000 more pump RPM than those of other pumps. The gear side plates are hard coated aluminium alloy to help control the clearances as the pump heats up. They are thicker, to keep them flat.
Presure Balance Plate System:
Our gear side plates are high alloy steel, heat treated very hard, ground to a 6micro-inch finish, with end-to-end flatness of 0.0001". These are coated with a harder-than-carbide composite, then lapped to a 2micro-inch mirror finish. This coating is so smooth that the torque required to drive this pump is significantly reduced. One plate is movable, 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 springs keep the plate in contact with the gear faces.
Inlet and outlet bolt-on-fittings allow a larger diamter inlet port for better flow and keep the housing strong because it isn't tapped for a large fitted thread. Pump length and diameter, mounting nose diameter and pump mounting bracket are industry standard. Will bolt on where any hilborn, waterman, DSR or enderle pump does.
To prevent pressure from reaching the shaft seal, a static brass sleeve around the drive shaft is sealed to the housing and to the moevable plate by O-rings. This reduces the possibility of a seal lead and reduces friction on the drive shaft, because pressure is not forcing the seal lip to grip down onto the shaft... gives longer seal life and less drive torque. The seal cavity is vented back into the inlet side of the pump to further insure that there is no pressure on the seal. A snap ring positively locvates the seal.Each pump is flow tested, run in for two-hours, then re-flow tested before shipping.