RC Engineering, the global leader in electronic fuel injectors for high- performance automotive applications.
- In order to select the correct size injector for your UP-GRADE / RACING application, you may wish to use the following formula. In most cases, a naturally aspirated engine will have a Brake Specific Fuel Consumption of .50. This means that the engine will use .50 Lbs. of fuel/Hr for each Horsepower that it produces. Turbo charged engines would want to be at .60 Lbs./Hr. or higher. Using these numbers, as a guideline, you can select the approximate injector size in the following formula for a 4 cyl. N/A Engine @ 200 BHP. (Most injectors will max. out at 80% Duty Cycle and this is the accepted Industry standard.) Change Horsepower, B.S.F.C., Duty Cycle and number of injectors as required for your application.
Divide required Horsepower by number of injectors used…
(200 HP / 4 INJ.) = 50 HP PER. INJ.
(50HP X .50 B.S.F.C.) = 25 Lbs/Hr
(25 Lbs/Hr / .80% Duty) = 31.25 Lbs/Hr Static flow rate.
31.25 Lbs/Hr X 10.50 = 328 cc/Min. Static flow rate required.
- Please list year, make and model of your chassis when ordering online!