©2008 Edelbrock Corporation
Brochure No. 63-0003
Catalog #70060, #70061, #70063
Rev. 7/08 - AJ/mc
Page 4 of 4
ENGINE OPERATION CONSIDERATIONS
When used correctly, nitrous oxide safely elevates cylinder pressures and temperatures while increasing combustion rate. These characteristics make
the engine more sensitive to detonation. To ensure proper performance and engine life, the following tips are suggested:
Adequate Fuel Pressure and Delivery
When designing your fuel system, plan on your pumps and lines flowing at least 0.10 gallons per hour per horsepower. The testing at Edelbrock was
conducted with a fuel pressure of 6.5 psi. Any variations from this fuel pressure will cause your final air/fuel ratio to change. Consult our Technical
Department for any questions on fuel pressure and its effects on final air/fuel ratios when using nitrous oxide.
Performer RPM Fuel System Requirements
When using the Performer RPM Series Kits, the potential horsepower gains are extremely high. The critical area for continued success with your nitrous
system lies in the fuel system. In the case of the Performer RPM Series Nitrous Systems, an auxiliary fuel supply system is a required addition to your
nitrous system. A high flow electric fuel pump and high capacity adjustable fuel pressure regulator are both recommended to ensure the fuel flow rate
is enough to ensure proper system operation. The minimum size we recommend for the fuel inlet feed line is a -6 (3/8” inch), with a size of -8 (1/2”
inch) recommended for the higher horsepower settings.
Performer RPM System Monitoring Requirements
Fuel pressure and nitrous pressure gauges are very important. Your fuel pressure must be set properly and a gauge is the only sure way to monitor
system performance. The same is true of the nitrous bottle pressure. A nitrous pressure gauge is the only way to ensure that your system calibrations
are within the parameters required of your horsepower settings.
Fuel Quality
Because nitrous oxide is an oxidizer, fuel selection is critical. Both octane and fuel consistency affect fuel burn rate. The oxidizer quality of nitrous
oxide will accelerate the burn rate, so we recommend a high quality of gasoline. We also recommend you use the same grade of gasoline every time
you use your nitrous oxide system. This will maintain the same fuel burn rate every time.
Engine System Upgrades
With all performance modifications, complementary system upgrades will always serve to elevate the consistency and longevity of an engine, especially
when using nitrous oxide as a power adder. Ignition upgrades, intake manifold upgrades, fuel controls and fuel pumps can all add to the performance
of a nitrous oxide injected engine.
Forged Pistons
With all nitrous oxide applications, forged pistons are highly recommended. Because of heightened potential for detonation, cast pistons are more
prone to failure and cannot handle horsepower increases over 125 hp. Never initiate your nitrous system before you are at full-load, wide-open throttle
conditions. Cast pistons will not be able to survive this kind of stress.
Edelbrock Corporation • 2700 California St. • Torrance, CA 90503
Tech-Line: 1-800-416-8628 • E-Mail: [email protected]
