Press Release

RACEPUMPS FUEL PUMP & REGULATOR FOR BLOW-THROUGH-CARB FORCED-INDUCTION ENGINES

THOMASVILLE, NC: There are basically two ways to use a carburetor on a turbocharged or supercharged engine: draw-through or blow-though. The draw-through system puts the turbo or blower downstream of the carburetor, which simplifies carburetor tuning but can create tremendous intake vacuum if the throttle butterfly closes while on boost, which can actually suck motor oil past the turbo/blower seals and into the intake. Also, the draw-through arrangement cannot use an intercooler due to fuel condensation and raw fuel often puddles in the turbo or supercharger. The blow-though method places the turbo or supercharger upstream of the carburetor, which allows the use of an intercooler, keeps fuel out of the turbo/blower and has no vacuum issues, however it makes fuel delivery and tuning difficult due to the boost resisting or even reversing fuel flow within the carburetor.

Heres the solution: RacePumps has a mechanical fuel pump and Adjustable Fuel Pressure Regulator combination thats ideal for blow-through turbocharged or supercharged carbureted engines. The RacePumps reciprocating-piston VR-VD Fuel Pump for small-block and big-block Chevy (small-block Ford available soon) provides over 200 GPH at an unregulated pressure of 50 PSI at any RPM, which is more than enough pressure to offset even the highest levels of boost and still have plenty of pressure remaining to fuel the carburetor. RacePumps Adjustable Fuel Pressure Regulator with optional boost reference instantaneously increases fuel pressure on a 1:1 ratio with boost, ensuring that the carburetor receives the proper fuel pressure at any boost level. Both the pump and regulator housings are constructed of hard-anodized billet 6061-T6 aluminum, have stainless steel internal components, and are designed for use with gas or methanol. For more information about RacePumps VR-VD Fuel Pump and Adjustable Fuel Pressure Regulator for forced-induction engines,