How NOS Nitrous Oxide Works Types Wet Dry System Automotive Engine Spacer Plate


Man: Brought to you by JEGS. Man: Nitrous oxide, also known as NOS, squeeze,
spray, laughing gas, N2O, juice, or simply the bottle, is a popular and inexpensive way
to add power at the push of a button. When correctly installed and operated per
the manufacturer’s directions, it’s safe and reliable as well. Nitrous oxide systems work by adding nitrous
oxide gas to the intake system of the engine, allowing more fuel to be burned, creating
more power. Systems can provide increases from 25 horsepower
to over 1000 but a typical factory VA engine can handle 100 to 150 additional horsepower
without harm. Nitrous systems come in two basic forms: dry
and wet. A dry system injects only nitrous oxide gas
and relies on the engine’s normal fuel delivery system for enrichment. Due to the limits of most factory fuel delivery
systems, a dry nitrous delivery system is typically only used for lower horsepower street
strip applications. A wet system adds both nitrous and fuel to
the engine. Wet systems require fuel systems capable of
supplying higher horsepower levels and are typically used on dedicated racing vehicles. There are also several ways that nitrous and
fuel can be delivered. Plate systems use a spacer with a spray bar
or perimeter ports between the carburetor or throttle body and intake manifold or plenum. Single-point systems use a nozzle in the intake
track to supply nitrous and fuel to all the cylinders while multi-point systems typically
have one nozzle per intake runner to give each cylinder its own supply. Horsepowers controlled through fuel and nitrous
jets. These are small machined inserts with precisely
sized orifices measured in thousands of an inch. When the fuel and nitrous solenoid valves
open, these jets regulate how much flows into the engine. Every system comes with a chart of recommended
jetting for specific horsepower levels for safe operation. The basic nitrous system will either be on
or off and for large horsepower increases this can be too much for your vehicle’s available
traction. To help control the delivery of power, multiple
stages of nitrous can be used, two or more small stages take the place of a large single
stage to allow a gradual addition of power. Another method of varying a nitrous system’s
power delivery is a progressive controller. This is an electronic device that is programmed
to very rapidly pulse the solenoids that turn the system on and off which allows the power
to be gradually introduced. Like any power adder, it’s important to use
appropriate safety devices to protect both your engine and yourself from potential harm. When used as instructed, nitrous oxide is
arguably the safest form of power adder because, unlike a turbo charger or super charger, when
the system is inactive it is placing no additional load or restriction on the engine. The primary safety feature included with every
nitrous system is a wide-open throttle switch. When the system is armed and ready, the throttle
switch prevents activation when the engine is at part throttle. This switch can be a simple mechanically operated
electrical micro switch or an electronic component that uses the signal form the engine’s throttle
position sensor. Another optional safety device is an RPM or
window switch, which only allows system activation above a preset engine speed and shuts the
system down above a predetermined maximum RPM. This device prevents engine damage due to
system activation too early in the RPM range or beyond the engine’s red line. Fuel and oil pressure switches can also be
incorporated to prevent activation if fuel or oil pressure falls too low. All of these activation devices can be used
alone or in series with the throttle switch for added peace of mind. Your nitrous system manufacturer will also
provide you with the recommended ignition retard setting for your jets. Because nitrous oxide speeds up the combustion
process, less ignition advance is needed and following this recommendation is critical
to avoiding engine damage from spark knock. Older vehicles with non-electronically controlled
ignitions can simply run reduced base timing, while EFI engines without adjustable distributors
will require a flash tune or external electronic ignition retard device activated by the nitrous
system control circuit. When adding 100 horsepower or more using nitrous,
spark plug heat ranges need to be one step colder for every 100 horsepower added. Non-projected plugs are recommended as projected
plugs expose themselves more to combusting gasses and may cause pre-ignition. Spark plug gaps should be reduced for use
with nitrous as additional nitrous and fuel in the combustion chamber makes it harder
for the spark to jump the gap. Use copper plugs. Plugs with platinum or exotic metal electrodes
are not recommended because the tips can get extremely hot, leading to deterioration or
even the tip breaking off, causing engine damage. It is imperative to understand how to read
a spark plug after a task when using nitrous and make adjustments if necessary. If ever in doubt, please call us for a correct
spark plug recommendation. Finally the nitrous oxide tank itself needs
to be treated with respect. It should be mounted securely as the manufacturer
directs and, if it is located in an area not separated from the passenger compartment by
a fixed barrier like a trunk, it needs to have a blow-down tube connected to the safety
valve to direct the contents outside the vehicle in case of activation. This valve is designed to release pressure
long before it reaches a dangerous level and it should never be tempered with or blocked. Nitrous tanks should never be heated using
an open flame. This will compromise the integrity of the
tank, possibly without leaving visible damage and can lead to catastrophic failure. A thermostatically controlled electric heater
or warm water bath is the safe professional way to keep nitrous pressure consistent. By following the instructions and choosing
the right system for your vehicle, nitrous oxide can be an inexpensive and safe route
to more power. For more information, visit us online at www.jegs.com
or give us a call at 800-345-4545. Man: Brought to you by JEGS, fast delivery,
your source for high performance and quality, delivering performance since 1960. JEGS.com.