MagnaFuel regulators need to be adjusted to 6.5 to 7.5 psi WITH FUEL FLOWING at a rate of about ½ cc per second (that's about 10 drops per second). The QuickStar 275 series pumps are factory preset to 18 psi (these units are not field adjustable). The MagnaFuel QuickStar 300 Series pumps are factory set to 25 psi and field adjustable from 25 to 36 psi. They are field adjustable from 24 to 36 psi. MagnaFuel ProStar 500 Series pumps are factory set to 28 to 30 psi. The system pressure of at least 8 to 10 psi per g is generally adequate. How much fuel pressure is necessary?įirst, the fuel system pressure (provided by the fuel pump) must be enough to oppose the effects of gravity during the launch and during the run for drag racers. The additional fuel requirements for nitrous system planning is about.7 lb/hp-hr. Each time that a nitrous system is engaged, additional fuel supply demands must be met or melted parts may result from 'system lean-out.' The fuel required is in excess of the.5 lb/hp-hr.įor normally aspirated conditions. This is most difficult with drag racing vehicles that sometimes have forward acceleration and wheel stand at the same time. Carburetors must have a stable supply of fuel in order to maintain the correct liquid fuel height. This is a general statement and sometimes engines can be a little more efficient than.5lb/hp-hr., but it is a good practice to plan and measure fuel system operation using this number. What this means is that for each horsepower produced, it takes ½ pound of fuel. This is sometimes called BSFC (Brake Specific Fuel Consumption). Most engines that are using gasoline burn approximately.5 pounds per horsepower-hour. How much fuel flow is enough? The correct volume of fuel is that which is required to support the amount of horsepower that the engine can produce. What timeframe did you have yours installed? PROSTAR 500 SERIES. We have been using the same Magnafuel Prostar 500 since August, 2008 without any kind of.
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