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compressed air to cool intake air temp?

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Old May 14, 2010 | 11:53 AM
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eat-sleep-4bngr's Avatar
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Default compressed air to cool intake air temp?

thought of a crazy idea but it seems like its worth trying.

Anyone thats used an air compressor in their garage knows that once released, the compressed air is very cold and also that compressor regulators can usually be adjusted to 100+psi.

My idea is to get a 5 gallon air carry tank and fill it using my garage air compressor, put the tank on the pass. side floorboard, put a on/off lever valve on the regulator, run a hose from the valve the the inlet of my intake (i have a stock intake). I figure spraying at WOT would mean the engine is recieving drastically cooler intake air temps thus making more hp & tq.

Any input?
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Old May 14, 2010 | 11:55 AM
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Default Re: compressed air to cool intake air temp?

Don't know about that b/c a compressor always has a but load of water in there u prob flood the motor with water more than anything. I wouldn't try it on my motor that's pretty crazy. Just get some nitrous.
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Old May 14, 2010 | 12:00 PM
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Default Re: compressed air to cool intake air temp?

Originally Posted by h23V
Don't know about that b/c a compressor always has a but load of water in there u prob flood the motor with water more than anything. I wouldn't try it on my motor that's pretty crazy. Just get some nitrous.
true but i wouldnt say its a ton. usually it builds up in the tank and there is a water relief valve at the bottom. Im going to try it on mine at low lowwww pressure so i wont eff up the a/f ratio.
Honestly its just a realllly efficient CAI but you are introducing a little more air into the intake as well. Its either harmless and helpful or harmless and worthless IMO.
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Old May 14, 2010 | 12:25 PM
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Default Re: compressed air to cool intake air temp?

nobody tried this or know someone who has?
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Old May 14, 2010 | 01:04 PM
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Default Re: compressed air to cool intake air temp?

I give you a thumbs up for creative thinking but the idea cracks me up I don't think you'll have any success or notice any difference trying this. You might stand a small chance of a gain if you were to hook up a CO2 tank and spray the outside of the intake pipe (ideally a metal one). It would be very cold and help cool the intake charge a little. The real gains from a CAI aren't so much from the cooler air, it's the fact that they use a longer length of pipe which enhances the tuning resonance frequency and cylinder filling. Add a little more fuel to the additional air and you've got more power.
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Old May 14, 2010 | 07:09 PM
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Default Re: compressed air to cool intake air temp?

Originally Posted by 00Red_SiR
I give you a thumbs up for creative thinking but the idea cracks me up I don't think you'll have any success or notice any difference trying this. You might stand a small chance of a gain if you were to hook up a CO2 tank and spray the outside of the intake pipe (ideally a metal one). It would be very cold and help cool the intake charge a little. The real gains from a CAI aren't so much from the cooler air, it's the fact that they use a longer length of pipe which enhances the tuning resonance frequency and cylinder filling. Add a little more fuel to the additional air and you've got more power.
Haha my crazy-*** idea was close wasn't it? Lol. I know that without extra fuel and a tune I wouldn't stand a snowball's chance in hell of making more than 2-3 more hp but i got a stock motor with H/E and 137,000 miles and too many other bills to boost or go full on N/A (like i wanted to) haha.

I appreciate someone who understands where I was trying to go with the concept. Of course a hardcore believer in the idea might hook up a boost gauge to the intake to monitor pressure, install an AEM adjustable FPR, get a wideband, and play with the regulator on the air tank till they see positive mani pressure..but then I'd be in the wrong section for this topic
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Old May 14, 2010 | 11:36 PM
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Default Re: compressed air to cool intake air temp?

It seems like if anything, you'd be benefiting from the additional airflow, not the cooling (basically low-level boost). Remember too, if it's too cold the fuel won't atomize correctly and will collect together into droplets.

I do like the idea, though; I'd actually thought about this before using thermoelectrics. It's basically a small cooling plate about 1"x1"; I figure you attach a couple of these to an intake pipe or cold air box and voila, drop the intake temp 20+ degrees potentially. After I finish my build that is one of the next things I want to try, rigged up with a temp sensor in the intake pipe (or to the stock IAT somehow) to regulate the amount of cooling.
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Old May 15, 2010 | 12:08 AM
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Default Re: compressed air to cool intake air temp?

word just re route your ac compressor to your intake pipe and put that **** on full blast .. im joking probly should do this
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Old May 15, 2010 | 12:08 AM
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Default Re: compressed air to cool intake air temp?

or should you ? someone try it out and report back to if it works i call dibbs on the paten
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Old May 15, 2010 | 04:40 AM
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Default Re: compressed air to cool intake air temp?

The air inside a compressor tank is not always colder. It depends on the location of your tank and the air temperature around the tank. For example, The tank is sitting in the passenger seat of your car in the afternoon sun. Is it really going to remain cool?

Why not try and move your A/C unit in the path of your intake air. So instead of cooling the cabin it will cool the air going into your engine.
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Old May 15, 2010 | 06:50 AM
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Default Re: compressed air to cool intake air temp?

Originally Posted by GhostAccord
The air inside a compressor tank is not always colder. It depends on the location of your tank and the air temperature around the tank. For example, The tank is sitting in the passenger seat of your car in the afternoon sun. Is it really going to remain cool?

Why not try and move your A/C unit in the path of your intake air. So instead of cooling the cabin it will cool the air going into your engine.
re routing A/C is outta the question haha many ppl on other sites had the same idea and some tried with no luck lol.

and technically compressed air INSIDE the tank is much hotter than atmospheric. It is only cold when released from the compressed state.

Unless i were to weld up some sort of intake pipe that could both a) take in air under vacuum and b) seal when the compressed air was blown into the intake pipe, then I wouldnt really be boosting at all haha.

idk i thought about it and thought this could really work. something like...boost of a turbo with the with the driver's choice to se it kinda like nitrous.
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Old May 15, 2010 | 06:52 AM
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Default Re: compressed air to cool intake air temp?

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Old May 15, 2010 | 06:52 AM
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Default Re: compressed air to cool intake air temp?

Originally Posted by 95skunkedgsr
or should you ? someone try it out and report back to if it works i call dibbs on the paten
I really do plan on trying it (not the A/C idea haha) with a low pressure setting on the regulator to see if I can feel any difference, although I probably won't. I'd imagine any difference whatsoever will only be measured on a dyno And no! The patent is mine I tell you..MIIIINEEE!!!

lmao
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Old May 15, 2010 | 07:54 AM
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Default Re: compressed air to cool intake air temp?

Thats actually not a bad idea haha. I mean it probably wont work in real life scenarios but I have to give you an A for effort at least.

On some of our K series race cars where the velocity stack sits directly on the front bumper and it feeds to a bottom mount TB, after we tune the car we take an air hose and do one last pull spraying air almost directly into the Vstack. Our thought process is to simulate the oncoming air on the track at 125+mph. It usually pics up 1-2hp. We do it so we can accomodate for added air on the top end in the tune. I highly doubt a butt dyno would be able to feel the difference. Plus you are just introducing another element of something that COULD go wrong and cost you a motor.

Being that the gains are negligable on the dyno with an idea close to yours, I'd say its probably not worth the hassle
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Old May 15, 2010 | 11:52 AM
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Default Re: compressed air to cool intake air temp?

someone at the local races here tried it on a stock beat up mazda 323. He had a compressor on the passenger floor and would spray it at WOT. It was slightly faster than a stock one and it blew after a couple of races :p

You should try to make a water to air cooler for the intake, that would be much more useful.
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Old May 15, 2010 | 11:54 AM
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Default Re: compressed air to cool intake air temp?

if you want compressed air, get a turbo.
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Old May 15, 2010 | 02:57 PM
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Default Re: compressed air to cool intake air temp?

Originally Posted by 2point2
if you want compressed air, get a turbo.
I don't. I've had and driven turbo cars in the past. Awesome and quick but in the end I'm not a racer on the street or the track so whats the point. I just wanted to see what everyone thought of it.



Originally Posted by vtec8200
someone at the local races here tried it on a stock beat up mazda 323. He had a compressor on the passenger floor and would spray it at WOT. It was slightly faster than a stock one and it blew after a couple of races :p

You should try to make a water to air cooler for the intake, that would be much more useful.
Lol mazda. I like the water to air cooler idea.
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