a/c intake cooling

[coos]

I have been toying with this for a while. While the a/c is running, everyone knows that the car loses horsepower. What i want to try and do is compensate for this lost of horsepower, by using that a/c to cool the intake charge. What I was thinking was running the low side a/c lines through the upper intercooler piping thus during a/c operations lowering the air temp, thus raiseing the density of the air= more horsepower. And it will only happen during a/c operation so during racing there will be no effect because the a/c is off. What do you guy's think?

 

[ApexVIII]

most cars the AC shuts off durring WOT, i would assume these do the same.

 

[LaN-]

Just stick with meth injection.

its quick easy and cheap. Considering its wiper fluid you don't need to do much other then add a pump and a few lines.

Also what your not realizing is its not just the cooling properties your getting from the meth injection, your also getting an octane boost. Wiper fluid (-20) is like 70% meth and 30% water so you get the octane boost from the meth and the cooling properties from the water.

 

[boosted86]

Just stick with meth injection.

its quick easy and cheap. Considering its wiper fluid you don't need to do much other then add a pump and a few lines.

Also what your not realizing is its not just the cooling properties your getting from the meth injection, your also getting an octane boost. r.

this is tru, but i mean a safe meth kit, easily goes for like 300 bucks,min. this will cost maybe 20. im really not looking for a octane booster, im just looking for a way to get denser air.

 

[Gamble97]

Couldn't you just take off your wiper sprayers and put a nipple on the tb elbow and use that? Or is it not high enough pressure?

 

[boosted86]

Couldn't you just take off your wiper sprayers and put a nipple on the tb elbow and use that? Or is it not high enough pressure?

no for meth you need a pump, and nozzle.

 

[srumel]

It seems like a good idea in theory, but you still have to factor in the paracitic loss of running the A/C while at WOT. You would, in effect, be creating for yourself the same thing that superchargers are criticized for. And I believe the second poster is right, I think it cuts off at 4k rpm, as I have removed my A/C I can't check this. Even if you could do this it would likely result in a zero sum situation. If you have decent gas and a good front mount, I would think that you'd be in the clear.

 

[boosted86]

yes i do have proper mods to sustain a decent timing curve, but like everyone else...theres a limit until you start to knock. this should raise that limit,in turn allowing for more boost and timing advance.....more power

 

[srumel]

Well in that case, I would agree with the other posters who recommended the methanol injection.

 

[Supa Dexta]

Not to be a dick, but do you really think you came up with this idea? In the history of cars?

... You could never supply enough cold air. The power it takes, the heat it generates. It would never work. Sorry,

 

[JayRolla]

It wouldnt work as good as meth but might do a little, not worth the time. I remember reading about the new f150 lightning that never came out. It had a proto type injection system like you are talking about.

The cansister would fill with cold air charged from the ac and would inject it into the intake manifold at the push of the button. But I think the ecu also added boost at the same time and they said it was going to give near 50whp. It would last about 30 seconds or something before needing recharged.

 

[DougR]

1st, Will not work. Why?
Simply the volume of air passing by the evaporator core will ALWAYS exceed the cooling effect of the compresor.

The parasitic los of turning on that compressor is way beyond the total cooling capacity of the Evap core. Thus ending up with hot air in the cabin along with the engine.

Trust me with this "Everyone has tried this" It will not work!.
I tried this back in the day. around 94...
I tried copper coils in the intake tube. You name it!
And as far as machining aluminum spacers with expansion chambers (aka boil off points) that bolt on below carb or tbi..
What was the result? less then expected 1/8th mile performance!

Your best effort is to remove the AC belt! or deal with it!

You want Sub Temps? Inject Alkey or Nitrous!


Doug

 

[boosted86]

Not to be a dick, but do you really think you came up with this idea? In the history of cars?

... You could never supply enough cold air. The power it takes, the heat it generates. It would never work. Sorry,

you obviously didn't read my post, my goal is not to literally inject the a/c (cold air) into the intake tract, its basically to drop the temperature where the intake funnel is (boxed fender) i understand that the a/c compressor will not keep up with the vacuum of air needed. all im saying is to kinda in a way, lower the ambient temps.

and im no way, trying to say i invented this whole theory or trying to say i came up with it(i know im not) .ive never seen it talked about on this forum, so i thought id bring it up for discussion.

 

[silver bullit]

you obviously didn't read my post, my goal is not to literally inject the a/c (cold air) into the intake tract, its basically to drop the temperature where the intake funnel is (boxed fender) i understand that the a/c compressor will not keep up with the vacuum of air needed. all im saying is to kinda in a way, lower the ambient temps.

and im no way, trying to say i invented this whole theory or trying to say i came up with it(i know im not) .ive never seen it talked about on this forum, so i thought id bring it up for discussion.

IT WILL NOT WORK!

Your turbo at idle pumps more air then the ac does at full blast.

Injecting mist/alky/meth kit or nos/intercooler sprayer is your best bet, and is already proven to drop 10-20 degrees off the intake temp.

 

[boosted86]

hmm, well i did some research on it , and bmw is doing it in some of there 3series in europe. kind of the same theory, but aimed more for gas mileage. heres a drawing of what i mean. i think you guys think that i plan on only using the ac for a source of injection...THATS NOT IT! ....HERE:

 

[Defiant]

In order to have enough cooling capacity to affect the amount of air a two-liter motor breathes, you'll need to tow the AC unit on a trailer. You'll also need a twenty-horsepower motor to run it. You'd be better-off using that to power the hydrogen generator.
Yes, cooler intake air is good, mostly. The trouble is in the energy equations. The amount of poop needed to do that cooling is greater than the amount of gain you'd net from the cooler air.

 

[DougR]

Heres something new. Found this over at DSMlink in a similar thread.

I am not endorsing this system or saying it works or have tried it!. Just a curiosity that I stumbled across today at work.

Freon cooled water to air intercooler

1st thing to know is that if the Grand National guys are trying it. Its definatly worth looking at! Some of those guys have Turbo systems that make most DSMs look like baby toys.

 

[Defiant]

That system is for storing-up cooling, not for dynamic cooling. You may as well use dry ice.

 

[Join]

Hi!

I got this idea here when searching. Nothing showed up in the forums about it, so I did a google search.

It seem to be a old idea, but I cannot remember to ever have seen anything like this.

Here is the link to the patent description.


Do anyone have some input on this?

If this is a effective system for cooling the intake air, the aircondition compressor in line with a evaporator intercooler is a closed system and don't need to be refilled at all times..


Have this been tried, and how did it work out?

 

[Boosted98gsx]

[/facepalm]

Please don't post until you've SEARCHED

 

[DSMTriad]

i thought i was crazy for thinking that. But if it was really beneficial then I think every one would be doing it. Keep in mind that using the ac compressor requires the crank and the engine runs hotter when its in use hence why the fan comes on.

But let me know if it works well for you.

 

[Join]

[/facepalm]

Please don't post until you've SEARCHED

Hi!

I have searched any phrase, words and solutions that I can think of regarding the topic..

Thats why I came up with the google search link..

If you have found any threads here, I will be happy if you post them..

 

[Join]

i thought i was crazy for thinking that.

Me too actually, but an idea that CAN work have to be researched.

But if it was really beneficial then I think every one would be doing it. Keep in mind that using the ac compressor requires the crank and the engine runs hotter when its in use hence why the fan comes on.

I know. But, how effective will it be? will the increased potential outrun the increased load on the crank?
Is the AC compressor big enough?

But let me know if it works well for you.

I don't start fabricating stuff without research.. I might if it can be beneficial..

 

[DSMTriad]

What made me think about doing this was the water/air intercoolers. Just get some stainless steel lines and some AN fittings.

 

[Join]

What made me think about doing this was the water/air intercoolers. Just get some stainless steel lines and some AN fittings.

That sounds like the best idea so far. After searching the internet the whole time now, I have found that it is a quite risky and possible expensive project!

I think the best idea is to wait for the kit to arrive in the shops..

 

[DSMTriad]

I just don't like it being crank driven.