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PRO STAR EFI Fuel Pump Engine horspower range: Up to 1,250 at 45 psi Designed for the demands of high power, electronic fuel injection with rail pressures of 40-45 psi. |
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PRO STAR 500 Fuel Pump Engine horspower range: Up to 2,000 at 25 psi Bypass: adjustable from 24 to 36 psi |
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QUICK STAR 300 Fuel Pump Engine horspower range: Up to 900 Bypass adjustable from 25 to 36 psi For the requirements of turbo, supercharged, or nitrous assist systems, where the high volume of the PRO STAR is not required. |
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QUICK STAR 275 Fuel Pump Engine horspower range: Up to 700 Bypass: Preset to 18 psi A pump that provides the same precision and quality as the Pro Star pump |
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You've heard and read about all the other pumps. Now
it's time that you study the comparison of flow versus pressure with a little
reality.
A racing fuel system is one of the most important selections that you can make
to ensure stable fuel delivery under all racing conditions. Drag racing provides
the greatest challenge in that the harder the vehicle launches, the harder the
fuel system must work to provide enough fuel at the right time. Although such
Pro Stock stars as Warren and Kurt Johnson rely on MagnaFlow Products, even drag
racing street cars can benefit from one of these racing fuel pumps.
Fuel System Requirements
In order to consider how much fuel flow your race car needs, it is necessary to
consider how much power the engine makes. Although it is desirable to have
reliable dynamometer data, it is not totally necessary. If using GASOLINE fuel,
each 100 horsepower needs to have at least .134 GPM (gallons per minute) at an
appropriate pressure to overcome the g's (g is 32.2 ft./sec./sec.) of
acceleration. If using ALCOHOL (Methanol) fuel, each 100
horsepower needs at least .25 GPM. The listed numbers are for complete system
applications which include the pump, pressure control unit, all lines, and the
float bowls) with needles and seats.
Flow vs. Pressure. The important issue is not how much a fuel system will flow (typically referred to as "free flow"), but how much power the system will supply at specific pressures. Essentially, the harder the vehicle launches, the more important the rating of flow versus pressure. The overall stability of the flow versus pressure curve affects how the vehicle responds to changes to improve the initial, 60 ft., 330 ft., and final ETs. The old "free flow" into a gas can versus time is very misleading and an inaccurate method as well. A test of volume flow versus time can be a good test ONLY if it is at rated pressure!
Fuel
System
Technical Notes and Performance Tips
Fuel
Pump and Filter Assemblies