Nitrous Oxide Systems Facts - The ABC's Of Nitrous

What You Need To Know About Laughing Gas

Chuck Jenkes Mar 1, 2003 0 Comment(s)
Sucp_0303_21_z Nitrous_oxide_system_facts Backfire 2/18

The power of nitrous can be seen in the distortion of these King Demon baseplates following a backfire. The throttle plates and shafts were destroyed, along with the boosters above them.

EFI Systems
Fuel-injected cars are often easier to install a nitrous oxide system on than cars with carburetors, and they respond just as well. The fuel supply is often as close as the injector fuel rail. A plate can be installed immediately after the throttle body, or a nozzle can be installed in the air duct up stream.

The most common nitrous systems consist of a single stage. Duplicating the single-stage hardware to make two or more stages can allow the added power to be controlled. Adding 300 hp of nitrous in a single stage is likely to just boil the tires when the button is pushed, unless the chassis is very robust. Two 150hp stages can allow the tires and chassis to recover from the first hit before the second stage is activated. This type of progressive electronic control system is what the fastest nitrous racers use.

Finishing Lines
Whether you have a simple plate system or a multi-stage individual runner system with nozzles, very few power modifications have the kick that nitrous oxide provides. A properly installed, safely operated nitrous system may offer the best bang for the buck of any power adder. If you have never felt the power of nitrous, catch a ride in a friend's car, but be forewarned, the nitrous rush can be addictive

Sucp_0303_19_z Nitrous_oxide_system_facts Nitrous_plate 3/18

A nitrous plate has a pair of tubes for fuel and for nitrous drilled with tiny holes to introduce the fuel and nitrous into the inlet tract. Fuel enters from one side, nitrous enters from the other, and jets meter the amount of each. The difference in power ratings is determined by the placement and number of holes in the bar tubes.

Top Ten Nitrous Mistakes
1.Never heat a nitrous bottle with anything but an approved bottle heater. If you heat a nitrous bottle too quickly, an explosion could occur. Heating a bottle with a torch can result in a weak spot on the cylinder that may fail, explosively.

2.Never attach the power supply for a 12-volt bottle heater directly to the battery. Always use a 12-volt supply that is hot only when the ignition is on, so that the system is fail-safe.

3.Never allow liquid nitrous to touch your skin. Liquid nitrous at approximately -125 degrees Fahrenheit will freeze your skin instantly and could cause permanent damage.

4.Never inhale nitrous oxide. Inhaling nitrous in large enough doses can be fatal.

5.Never leave the nitrous bottle valve open for extended periods of time. Leaving the bottle valve open could damage the seals in the nitrous solenoids.

6.Do not exceed a nitrous bottle pressure of 1,100 psi. The nitrous system was designed to run at 1,000 psi, and a high pressure will lean out the nitrous-to-fuel mixture and could cause severe engine damage. Higher pressures may adversely affect the seals in the nitrous solenoids.

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Here's a cutaway of a nitrous nozzle. Fuel and nitrous which are metered by the jets enter the nozzle and merge in the area of the tip, mixing with the air and/or fuel-air mixture.

7.Never assume that your stock fuel system is sufficient to meet the fuel demands of your nitrous system and the engine. If a stock fuel system cannot supply enough fuel, the mixture will become too lean and severe engine damage will occur.

8.Never assume that idle fuel pressure and wide-open throttle fuel pressure are the same. Always check fuel pressure at wide-open throttle under load.

9.Never use Teflon tape on any pipe thread in a nitrous system, since loose pieces of tape could clog the solenoids or jets. Always use Teflon paste.

10.Never operate the nitrous system without the engine running. An explosion could occur upon start up.


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