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Giggle gas - something to put a smile on your face.

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Giggle gas - something to put a smile on your face.

Post by LhYnxz on Tue Sep 23, 2008 7:57 pm

"Giggle Gas - Nitrous Oxide (N20) the power button!"
NB: NoS is a brand name of a company but many confuse this with the name of the gas Dinitrous Monoxide AKA – Nitrous Oxide N20, Dinitrous Monoxide, Dinitrogen oxide also referred to as Nitrous or giggle gas (from its medical usage as an anaesthetic.



It was used in wartime to boost the engines in aircraft and later
became a big hit in drag racing in the Pro Mod class. Not a flammable
gas in itself it is injected into the intake manifold where it mixes
with air & fuel. The main benefit of Nitrous comes as it burns and
becomes an oxidiser releasing more oxygen into the engine.

An interesting side benefit of
using Nitrous is the cooling effect it has. It rapidly changes from a
liquid to a gas and produces a cooling effect (when you get out of the
bath the water starts to evaporate or turn into a gas vapour and takes
the heat from your body) this cooling effect reduces the temperature of
the air taken in by 60 degrees F. Colder air carries more oxygen which
is required for combustion to take place - more oxygen means you can
burn more fuel.

As the Nitrous gas is heated up in
the combustion process it breaks down releasing additional oxygen and
increases the burn rate allowing more fuel to enter the combustion
chamber. Different size nozzle jets offer larger boosts to the power
ranging from 20bhp more to over 200bhp more.

As well as sending Nitrous to the
engine you will also need to supply additional fuel (Nitrous provides a
cooler denser air charge, more oxygen, so will run Lean if more fuel is
not delivered.) Obviously the engine has to be able to cope with this
increased pressure and power so the jets are matched to the
application.

Most standard engines can cope
with a 20 - 40 bhp shot. Forged pistons, forged steel rods and a
heavy-duty cylinder head with up rated gasket and performance bolts and
full balancing are required if you go for a major power increase.





A full range of Nitrous delivery systems
are available for all applications of vehicles and engine types and can
be matched to each cylinder in the engine. The common delivery systems
are:-

WET (The fuel and Nitrous are mixed and introduced
together to the primary part of the intake. This system produces
slightly more power than dry but cannot be applied to an engine with a
dry intake typically most fuel injected engines.)

DRY (The extra fuel required to maintain the burn
balance from Lean to Rich is delivered by the injectors of the car. The
primary part of the intake is kept dry of fuel.)

FOGGER (Named after the Fogger Nozzle mixes the fuel
and Nitrous mixture and sprays it directly into the cylinder. Each
cylinder can be set up separately and additional foggers can be added
creating a dual stage kit. Foggers generally produce the most
significant power gains.)

A bottle warmer can assist with
maintaining bottle pressure and delivering smooth power. To get an idea
how much Nitrous remains in your bottle you need to weigh it – as the
pressure gauge just indicates the pressure in the bottle and this can
vary depending on temperature. Adding Nitrous is a very easy high power modification. The refills can be a hidden cost though.




It is fairly easy to fit Nitrous to a
vehicle within 4 to 6 hours although most insurance companies will not
provide cover for road use. (As with all modifications your insurers
must be notified.) A 10 lb bottle of Nitrous is good for about 3
minutes of boost (7-10 ¼ miles runs) but shouldn’t really be operated
for more than 10-15 seconds at a time if you don’t want to blow up your
engine.

Nitrous can also be applied to diesel
engines a 130ps Golf TDI got almost double the power - but boy racers
don’t buy diesels – well not until recently.

Medical grade NoS does not have a smell
added like automotive grade Nitrous (incidentally the smell added to
car grade Nitrous is Hydrogen Sulfide, a very nasty additive that will
cause permanent damage to lung tissues and nerve endings if
deliberately inhaled for recreation!) So you can use medical grade
Nitrous in a car but not vice versa!!!

When to press the Nitrous boost button –

At or over 2500 RPM with the throttle fully depressed – you can buy a
progressive boost system which matches the Nitrous shot to the throttle
position and regulates the flow. You will receive an enormous increase
of torque and this can result in a loss of traction – so be careful at
speed as a loss of traction usually equals an impressive spin and crash.

Pressing the Nitrous button and then
starting the engine can cause catestrophic engine damage. If the buttin
is accidentally pressed - disengage the coil and turn the engine over a
few times to clear the cylinders.

_________________

LhYnxz
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