O2 instead of NOS

yup, they are right. here is why. NOS is N2O, meaning 2 molecules of nitrogen and on molecule of oxygen per part. in its bottle, N20 is a liquid. when you release it, it instantly turns to a super cold gas, the nitrogen and oxygen molecules spit. when they do, the nitrogen becomes EXTREMELY cold (roughly -40 degrees Celsius) in the atmosphere and not only super cools the oxygen molecule around it, but all the other oxygen molecules that are traveling down into the combustion chamber! as i am sure you know, colder air is more dense, has more O2 in it, and can make more power. the biggest advantage of nitrous is its cooling effect. some pro racers even use just to cool the air from their superchargers. they never actually inject it into thier engines. n20 is better at cooling the incoming air than an intercooler could ever be. you could still make power by injecting compressed 02 into your motor, but the effect would probably be a fraction of what it would be with the nitrogen added.

BTW, i know all of this b/c i am a nitrous junkie!!:kooky:

Im gonna have to chime in on this one. Actually the cooling effect that everyone is talking about is not what creates the additional horsepower, it is a secondary benefit. The real power from nitrous comes from when it is injected and heated in the compression stroke the n20 splits and releases extra oxygen into the system. Furthermore nitrous oxide is extremely dense which acually leads to about 2 times the amount of oxygen than in the air that we and our engines breath. We all should know that more oxygen leads to the burning of more fuel which leads to higher cylinder pressure and equals more power. The cooling effect is only secondary and is not where the real gains come from, but dont get me wrong there is some power gains from the cooling but not anywhere near what the surplus of new oxygen to the engine.

To try to answer the original question here. A direct injection of oxygen instead of nitrous i cant help you with. I would have to guess that it would be way too dangerous. Oxygen causes the combustion of fuel to take place much more rapidly. Think of it as this i believe that air is made up of roughly 79% nitrogen and 21% oxygen and nitrous oxide is 64% nitrogen and 36% oxygen. Now the horsepower gains from this enhancement are tremendous yet can cause problems ie. detonation or much worse if not used correctly. Now think about 100% oxygen shooting into your engine.

There are two reasons for sure.
Oxygen is very dangerouse and difficult to store safely.
LOX bottles are two bottles in one. In case the inner bottle cracks the outer will contain the O2.
Oxygen boils at -297 degrees F and expands at the rate of 300 times per volume. That makes it difficult to get from point A (Bottle) to B (Intake). If you remember your phisics class, once a liquid reaches boiling point then it no longer gets hotter as it has turned to a gas unless heated externally.
NOS boils at -127.3 F.
Gasoline freezes at around -200 to -300 degress F depending on the blend.
Inject Non-Heated O2 and what you get is a Block of Ice'd Gasoline.
Inject NOS into gasoline with water in it and the water freezes.
What happened to the NOS Shot Dude? :winks


NOS has two advantages:
Safer to store.
Wont freeze yer go-juice.

ixtlan said:

There are two reasons for sure.
Oxygen is very dangerouse and difficult to store safely.
LOX bottles are two bottles in one.

Click to expand...

Keeping in mind that the bottles of compressed oxygen, aren't liquid. They are compressed gas. It does not become liquid at any point. You *can* purchase liquid O2 bottles but you lose about a percent a day while storing them and they are wildly expensive compared to what people use to weld/cut. Not feasable to anyone but metal scrappers and industry that uses it fast enough. The oxygen bottles you and I use for gas welding and cutting, are compressed gas.

Anytime you decompress gas, it has a cooling effect. Compressing gas heats it. O2 would also cool the charge so that isn't the prime benefit for NOS over oxygen. I am simply wondering why you can't use oxygen gas, instead of nitrous as an oxygen source. It doesn't have to be 100% oxygen and it doesn't have to go in at max volume.

I wonder if the nitrogen in NOS slows the availability of the oxygen by needing to be heated and *then* releasing the oxygen [thus acting to retard the speed of combustion compared to O2 alone]. If you already had nothing but oxygen, perhaps the spark plug would be crossing the line between "igniting the gas and air mixture" and "touching off a bomb".

Maximum in PING [pre-ignition].