Gauge or sensor issue. Can't violate physics.

 

The air has to pass by a surface that is a differnet tempature then it is for a change to occur, in the case of an intercooler, the incoming air charge is heated by being compressed, the purpose of the intercooler, air to water, or air to air is to reduce the intake charge tempature for the sake of makign more power, having less detonation, etc.etc. The more surface it crosses over that is a differnet tempature ( cooler in this sense ) the more of an effect it will have. BUt, this also creates drag to the incoming air, which is why all intercoolers cause a loss of boost, how much is decided by the design, size and whatnot. If the incoming air only crosses by X amount of surface taht is x amount of degrees differnet it will only cool so much. the only way to increase the cooling effect, is to either increase the area of surface the charge passes over, or to increase the tempature differnence of the surface and the intake charge. Meaning, if yout IAT with whatever turbo/blower is say 100 degrees, the only way to decrease that temp. is to either put the intake charge thru a larger cooler taht can remove more heat, as the intake charge is in contact with it for a longer period of time, or decrease the tempature of the surface it is coming in contact with.


As for what type of surface is used, it's an alum core that has the cold water pumped thru it, much like a radiator as far as I know.
Hope this helps

 

We used to call it Igloo racing. You can mount an insulated cooler in the trunk and plumb it with a small bilge pump. Tons of cheap parts at boat shops that work very well. Tried dry ice, and a slurry of alcohol and crushed ice for some very cool temps. Of course you need Sears garden hose because it has a racing stripe on it. Works well at the track, but after a burnout and a quick pass, 15 pounds of ice is luke warm. Added an in line trans cooler on the return line for street driving but in Texas summer heat it was never enough.

 

How about a smaller conventional A2A intercooler mounted in the front, contained within a basket of sorts that would allow you to fill up the space all around the IC with dry ice pellets? You'd have to work out some sort of route to access the IC, but this sort of approach is testable. You'd have a great temp differential and some decent surface area to use... and since you're in Vegas you wouldn't have to worry about condensation dripping onto the track.

under pressure -- yah, you just made me think of some of the serious snap-freeze protocols we use in the lab: dry ice in an alcohol bath...

 

I got the great idea, run a large front mount intercooler and then spray methanol. IAT's run about 20 less than ambient, it's simple, light and cheap.

 

Size is not necessary the best - in this case at least. Precision has come out with a new core that is more efficent that even the bigger cores. I run two (2) 3"x3"x6" corres inside my intercooler. Each is good for about 750-800hp - total of 1500-1600hp. We effective. No problems so far. Unfortunately these cores are very limited.

Here's a picture of my A2W intercooler:



David

 

sorry to go off topic a little, but how long do you a2w guys think the ice would last if you ran an intercooler first to get the temps down to about ambient, theb ran it through a chargcooler????

thanks Chris.

 

www.howstuffworks.com is your friend.

At the world street nationals myself and caveman talked to the hardcore guys (7 sec lsx based car) they achieve 65 degree IAT temps.

The Wolf Mustang that regularly dips into the 7's on drag radials runs A2W.

You simply cannot beat the heat transfer of a A2W system.

With as hot as it is now, i'm glad I have an a2w aftercooler otherwise i'm sure i'd be detonating.

Caveman runs an additional ice tank, its basically like a fuel cell, sits where his batt used to be. Works good.

when I upgrade blower i'm going to see if Vortech has engineered a larger aftercooler rated for higher cfm capacity.

 

Ice lasting time depends on a ton of stuff like how much ice it can hold and if you are returning the hot water to the ice tank etc.

I go through about 3 gallons of ice water per 1/4 pass... most of the time i don't bother adding the ice unless its friggen' hot outside.

 

Here is a really good link that explains the intercooling in detail and breaks it down to a science. Very informative. Intercooling

 

What's the new technology and why is it more efficient? On Precision's web site they just say they use plain old Garrett cores, and then at Garrett's site, they say each core of the size you specify would be good for about 400HP.

Just trying to understand. Nice setup by the way.

Jim

 

Works great for you Camaro guys. But us Pontiac folks, we are limited as to what we can have. i have seen some T/A folks that have cut out their foglights and license plates, but mine is a formula, meaning I would have only the license plate area for cooling. I really dont feel like altering the car like that

 

Those are NOT the ones we use. I don't have any idea their technology behind core sizes. I wish I would have taken a picture of the cores before they were incased. To late now. When bought from Precision we were told they were brand new tech ????? All I know is that they work.

For amount of ice used. 15lbs per 1/4 run. We use a fuel cell also.

David

 

Is the 15lbs of ice completely liquid after a run, or a mix of ice and water?

Jim

 

i'll be getting one of those too

 

I remember on mythbusters they had an episode on how to chill a 6 pack the fastest way possible. Tryed lotsa different stuff. Including icewater, and ice water with SALT. When they added salt the temps dropped something like 10-20 degrees below the ice water and sped up the cooling of the 6 pack quite a bit. Not sure what materials the intercoolers are made of, but thats just another idea someone may want to test. Im sure you can geta saltwater freindly pump from a boat shop easily. Im wondering what the intercooler insides would do though?

 

The cores are made by Honeywell, half the size of the old cores and better efficiency. Just what ive read.

I would use about 15-20lbs of ice per round, with a 10 gallon tank and igloo.

 

Just nice and cool water, no ice. I have a valve I can open to drain the excess water, and refill with ice.

David

 

its a bit off topic but does anyone racing on here cool their fuel lines?????

i know F! teams running REALLY high fuel line presures do run them. guess it just helps stop them going lean. well you need everything you can get when your spinning you motor to over 20K rpm! lol

just wondered if it would cool the intake any????

Chris

 

I don't but I thought about doing it. If I did i'd relocate my battery to the rear and put what they call "cool can" in there. It will make your air/fuel mixture more dense and really helps when its hot out. You could probably mount it in the rear too. Insulating your fuel lines would help also.

Every little bit helps.