dry ice cooling?? your thoughts?

[GU11TY]

hey guys i was just looking into dry ice cooling for your engine and ive tried looking it up on the net but it hasnt come up with much
what are your thoughts on it
is it expensive
who in syd does it
and is it worth it!!

[Poggy]

What were your doign to use it for? the drags or on the dyno? what engine/setup, on a dyno and even for drags the right setup could improve times and power figures.

[NeoNasty]

I wouldnt use instead of a radiator.

It has been used many times for intercooling. You could just make a panel and sit a whole lot of dry ice on it, which then rests on your intercooler. Im sure it would help keep those intake temps down. You'll need an ECU that can make temp adjustments too though.

[chris davey]

It works well.

It probably isn't suitable for a road car. (unless you just use it as additional to an air to air cooler)

It would be a bitch to tune to have it safe for no dry ice and dry ice on the same map ie. only using air temp compensation to adjust fuelling etc.

I would probably have a seperate map to use with zero air temp compensation in it and load it up when you use dry ice.

Have to make sure that intake temps are pretty consisten though as the cooler the intake charge the more fuel is required so if you got it tuned at 10deg intake charge and then took it to the drags and it got down to 0 then you need additional fuel.

Basically, I think that it isn't for the faint hearted if you want it done right.

Just slap a nitrous kit on there That will lower intake temps significantly along with other benefits

[GU11TY]

ah tru ey
well i dont think my poo would like NOS
but goin 2 drags tomoz night so see what my car runs
wil be happy to get into 12s for now
and then 11's latr

[GA61XX]

I have seen the fuel line run through a esky of dry ice to chill the fuel down & make it dencer... A drag racing mate showed me this, on his Holden crap (they need all the help they can get)..

[oldcorollas]

hey guys i was just looking into dry ice cooling for your engine and ive tried looking it up on the net but it hasnt come up with much
what are your thoughts on it
is it expensive
who in syd does it
and is it worth it!!

ideally...
you use the dry ice to cool a water/alcohol mixture to low temps... maybe -30 or -40 or so. (the dry ice itself is -78ish
then, you pump this cold mixture through a water to air cooler to cool the charge.
or, you have a radiator sitting in the alcohol/water/dryice bath, through which water/alcohol goes to and from the water to air cooler...

ie, either the cooled mixture goes to the cooler itself, or it is used to replace the normal heat exchanger

you would ideally want to be able to run the car on the street (then again, with no licence it shouldn't matter ), so you would have a couple of valves to divert the water fromt he "cooler esky" to a radiator for normal day to day running.

if you were not worried about intake length, then you could run an air to air to get rid of a lot of heat, and then the water to air to make it really cold.

to set up is not expensive.. but you need to take into account the amount of CO2 produced to cool, how long that takes, and how much dry ice you need to get the system temp down and keep it down (ie, pre-circulate to get all the (insulated) pipes cold first).
you need to let the CO2 out without gathering in the cabin of the car, or letting coolign mixture escape (not good on track)

running costs? just alcohol and dry ice...

who does it? you.. it is simple. just plumbing and some containers.

worth it?
look up the change in air density or power per degree difference.... if you are restricted in other ways.. it can help.
NOS will be more effective. both would be even more effective.....

if you are just doing it for nerdiness.. why not

[4agerolla]

I say give it a dig nathan! That blue 1jz cressida at toyota fest was running a neat dry-ice set up. Effectiveness?? I cant say... keeping your coke cans cold on a stinking hot day?? Yep!

[oldcorollas]

the dry ice is only part of it.. just having it there is not enough
if the intake air temps are not getting down below -20 or -30, then you are doing something wrong.

ie, design a temperature removal system... powered by dry ice

[The Real Roadrunner]

dry ice coolers can work extremely well but you need the correct core to do the job PROPERLY.
take into account that the airspeed through your cooler can be upto and over 100m/s then realise how much surface area you will NEED to have in contact whith both the dryice AND the charge air for it to do the job.

i think the guys at ARE have done a write on some of the stuff they've built that has worked really well.

cheers
linden

[GU11TY]

oh well il see waht times i get tomoz on 15 psi
then when i get my eboost2 back ill run it down the 1/4 then
if i aint happy then maybe NOS or dry ice
or maybe a new car lol

[DigitalPho3nix]

There is a product already on the shelf for this.

Unfortunately I can't remember who makes it! It is really intended for drag racing one use only stuff...

Dry ice is manufactured into a tubular sandwich and this tube is placed in the intake system. It must be sandwiched otherwise you'd be flowing CO2 into your engine which won't help your power output at all (carbon dioxide doesn't burn).

Heat exchange takes place over the wall of the thin inner tube.

Edit: it might have been PWR in queensland who makes them?

[jak]

i have a dry ice cooler, and the main thing u should probably understand (in our case anyway) its not so much of a power adder, but it keeps inlet temps down (more consistant) and by keeping things cooler, it makes them last alot longer. eg: stock turbos on 25psi, if we had no nos or dry ice, they would die in the ass quite quickly. basically it adds to the longevity of the engine and turbos.

in ours, we do not run a core, we have the pipe coiled around inside so it get more surface area. seen 7 degree inlet temps and with ice on the plenum aswell, 1 degree inlet temps.

made 3.5kw on the dyno last check, and it works fine on the same map as normal. (we use a microtech, may be different for othe ecu's??)

PWR do make them but i think they are pretty dear.

GU11TY: we will be at the drags 2morrow aswell, and running the dry ice cooler. come have a look. You should be able to get another 4-5psi out of the stockers without gas (if u still run them?)

And for the record, putting a tray infront of you ic and filling it with ice actually lowers your power because it cant draw air thru the cooler. i seen a supra loose a dyno comp coz of that.

Jak

[NeoNasty]

I would have thought that the ice tray infront of the IC would have still helped.

Perhaps it also stopped air from getting to the radiator and that caused the problem. Id love to do some experiments with this. Perhaps a V mounted IC/radiator would help overcome this problem.

[GU11TY]

yeh jak ill try and find you
or if you see my car come and say hi, my plates r on my soarer