I hear nitrous oxide just cools the intake air/fuel so more air and fuel can get in the same space...

Could the same effect be obtained on a lower level by turning a can of compressed air upside down and spraying it into the intake?

nitrous oxide is also flamible
but with a good setup its also contained to a almost constant stream

people do use co2 in race cars though

The DEI CryO2 system uses co2 to cool the intake air before it enters the IM.

You would not want to spray CO2 into the intake air stream. For every bit of CO2 you put into the air stream, that is displacing oxygen that could bond with fuel to make power. CO2= No power. Yes the cooling of the intake air charge has a beneficial effect, but not enough to offset the displaced oxygen.

You could spray compressed air/CO2 onto your intake, or onto something to cool your intake air charge (sort of like an intercooler), but you would not want the gas itself to enter the intake air tract anywhere.

The Cry02 device runs compressed CO2 through a "bulb" that is aerodynamically shaped. This cools the "bulb" which then in turn cools the intake air charge. The company claims it is very effective, however I have my doubts about blocking the intake air flow with such a large device (the bulb), not to mention the very limited contact/surface area of the bulb. (meaning it would not drop your intake air temps very much, or as much as they claim).

You can see a photo of the system here.
http://www.designengineering.com/images/ph..._air_intake.jpg

For product details
http://www.designengineering.com/pro...asp?m=sp&pid=4

Moving this to forced induction

just get a scuba tank filled to like 3500psi and attach the valve to your intake tongue.gif

also to remember...

nitrous itself is compressed air...

Nitrous is a heavier molecule that contains three oxygen atoms. Not only does it cool air... it also causing more oxygen to enter, which like random said =more power.

Nitrous is a cold way of forcing air in your engine...

Didn't Voidweller have that Cryo system?

Hmm.... so howabout a heat sink type of device with a peltier cooler on it?

http://us.st7.yimg.com/store1.yimg.c...0_53968642.jpg

Like jam the fuxin' computer heat sink into the CAI, and hook up one of those 12V thermo-electric peltier coolers from a computer, but backwards so it will cool the heatsink instead of warm it up?
http://www.digit-life.com/articles/p...coolers/p4.gif


think it would be worth it? Supposedly the Peltiers can freeze one side and boil an egg on the other, they're also stackable.. meaning you can utilize a few of them all on top of eachother. Maybe it could work like an air to air intercooler?

that looks VERY restrictive...

Yeah, but there would be enough room for air to pass on the sides of it too. That was the first one i found as well...

Maybe i should start a new thread for this? It may just be possible to invent something new here.

Wouldn't work dude

A peltier much used for cooling computer cpu's cools one side while the other becomes hot (very hot).
With no cooling off some sort the peltier will or die or just shutdown. So you have to cool the heated side so you're really moving the problem.

you could mount a heatsink of some sort on it and hook it up to the radiator.

But I think with the speed the air is taken in you really won't cool down the air much. You're also gonna load your alternator more because a peltier is often around 50 - 150 Watt.

what about alcohol injection? i know some cars spray in that stuff and it acts like using an intercooler. dont know much bout it tho

Alochol injection and water injection have both been used with some measure of success. However, I agree with Corkey Bell and A. Graham Bell regarding the use of either/both.

Basically, the Alochol or water displaces oxygen. Carrying oxygen to the engine is the primary purpose of the intake tract. They are NOT designed for carrying fluids dispursed in air or plain liquid.

Assuming you have 100% control over injectors and ignition timing, you'll make more power without them than with them. If you "need" them to make more power (to stop detonation), you did something wrong in the design of your engine system. You should "fix" the problem with an engine system design change rather than "fix" it with water/alochol spray.

If you are stock or even mainly stock you would see no gain/benefit from water injection or alochol injection. If you have a turbocharger, supercharger or insane high compression engine, you might have a "use" for them, however, I would STILL reccomend proper design in the first place so that they are not needed/necessary.

Assuming you're running 9.5:1 Compression and 35psi of boost. You'll probably have detonation issues... You could add water or alochol spray. The "right" way to do it would have been to use a lower compression motor to run that high of boost.

I'm Also a firm believer that you don't need to run 25+psi of boost to make power with a turbocharger or supercharger. Look at the formula 1 cars (when they were allowed turbochargers). They were making in excess of 1200 WHP on only 6.5psi. When they changed the rules and dropped the boost to 3.3psi, they still made in exess of 900 WHP.

So...boost is not the answer. Proper design is the answer.

Methanol is normally only used on high power SC's because they don't have IC's.

very much agreed Random. Using either water injection or Alcohol injection is generally just a bandaid.

Now a water sprayer on an intercooler is a different matter.

better yet... NITROUS
B)

how about a air to air intercooler on a normal intake?

Pointless... where would you run the piping? You can't put an intercooler inline on the normal intake set up, and running it down to the front-mount would just create a massive restriction.

On turbochargers, intercoolers make you lose about 2-3PSI before it gets to the engine. Imagine the results when your basically running 1PSI N/A.

LOL, i see your point... Has anyone tried an air compressor?

A turbocharger/supercharger is basically an air compressor. lol.gif wink1.gif

An actual air compressor would be too restrictive, and compressing air creates heat, which means less power. Which means you would be running an intercooler, and you would be running the compressor off the car's own battery. A turbocharger runs off the car's exhaust, which is a hell of a lot more powerful than any battery. B)

If you want to cool your intake charge down without losing power then i would go with a nitrous oxide kit. hooked up right and tuned right your engine will produce more power and still last just as long as it would w/o nitrous. Nitrous adds an extra oxygen molecule to the intake charge while cooling it at the same time. Nitrous by itself is NOT flammible. But when added to the intake charge it accelerates cumbustion along with cooling the intake charge.

If you think of it "bang for the buck" wise. even a 35 HP shot of Nitrous is your best performance dollar. 35 WHP for $500 vs maybe 10 WHP for a $200 AEM intake. The added bonus is you can increase the nitrous (and fuel) as your demand/need for speed grows.