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Cryogenic Intake Cooling Systems


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Hey,

I was just looking through some old magazines and found an old hot 4's magazine, and the s13 on the front had a fmic in the grill, I was interested so I turned to the page. And then i saw it... Cry02, or Cryogenic Intake Cooling Systems. Its based in America and the company sells Ny-Trex(Nos) and these C02 alternatives.

They have fuel bars to cool fuel, intake tubes with a bulb of C02 inside to cool intake temps, and intercooler sprayers. They are claiming the spray will make the intercooler 50% more effective at cooling.

They say that these kits use the same chemical "C02" which is found in some fire extinguishers, and off the top of my head they are -200degreesC. They say the kits can be refilled for $20 at any local place (maybe fire extinguisher specialists?)

So the point of my post.. Has anyone ever used this stuff? I was going to get water/meth but was thinking this might be better... or maybe I could combine the two.

The kits arent that expensive either, coming in at AUD$590 for a full install kit with 10lbs tank plus the accessories you wish to use, coming in at AUD$185 for the Fuel bar, AUD$234 for the intake bulb and AUD$150-280 for the intercooler sprays.

Thanks guys, open to ideas and discussions... also anyone know if this would be a legal alternative to Nos?

LINK: http://www.designengineering.com/products.asp?m=sc&cid=1

Edited by choku_dori
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Ive been looking into a system to decrease intake temps as mine get quite hot on 25+ degree days; now thats either down to my intercooler having grease/oil in it making heat transfer less efficient or simply because turbo cars dont like warmer weather.

this kit looks interesting but id say water/meth injection is much better as it can be used more frequently + its cheaper (depending on meth% to water etc)

oh and its much more efficient as the spray for the intercooler will probably not cool all the fins where the injection is just in the throttle body.

just my thoughts

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OK, lets start here with the safety aspect. CO2 is dangerous stuff (anything under pressure is really).

Any tank that buy outside the country is likely not going to be able to be tested and/or filled here.

I have toyed around with the idea of using some of my old paintball equipment (co2 tanks, ASA's, macros lines etc) to fit a co2 sprayer onto the intercooler.

Old paintball markers run on food grade CO2, can get big bottles of it from places like BOC Gasses. You fill by weight and need a simple fill station (can buy from a paintball equipment distributor).

The good thing about CO2 is that it is self regulating to ~800psi, you could utilise a regulator designed for paintball to drop pressure if needed.

Lastly, don't forget you will be releasing CO2 into the atmosphere so don't have it exhaust near your air filter or any vents.

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Lastly, don't forget you will be releasing CO2 into the atmosphere so don't have it exhaust near your air filter or any vents.

Best point....didnt think of that.....can stall the engine quite easily.

you know what, thinkin of what i said before about oil buildup in your intake system/intercooler can be quite bad for heat transfer......ummm comming from my lab work, using the autoclave we must allow for extra sterilisation time if there are lipids or proteins involved so possible a simple intercooler clean/degrease would be enough to drop intake temps.

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Best point....didnt think of that.....can stall the engine quite easily.

i'd be more worried about you stalling, not the car

^yes, its great for that. if you've got a room temp 6 pack or similar, give it a quick hit with a fire extinguisher, gets em nice n cold real quick

Edited by VB-
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i'd be more worried about you stalling, not the car

That's why fill stations at paintball fields exhaust the leftover co2 in the lines away from frequented areas (usually run the hose a few meters up a tree or something).

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these kits have been round for years, im pretty sure rocket ind. vpw etc all have them laying around. i had a kit fitted to a BMW (intercooller spray bar) and it worked EXTREMELY well. I had a inlet temp (link G3) datalog but it went when my lappy was stolen.

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What should your intake temp be at anyways.

Mine on a hot Darwin Day hits around 35 degrees but has gotten as low as 20 at night etc. I thought that was pretty dam good really as some others up here are around the 50-70 mark. Pretty high so i think my intercooler is well suuited and working well

I did think bout these kits though and figured water meth setup is cheaper

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These work, not dangerous unless its kept in lines, hence why you purge the lines. The lines can pop and thats about it.

Co2 is non compustable so even with a puncuture in the bottle it will do little but piss out freezing cold air.

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Mate if you puncture a co2 canister, that 800odd psi or pressure is going to do a little more than piss some cold air.

HIGH PRESSURE IS DANGEROUS PEOPLE.

Not quite as dangerous as the 4500psi air tanks we now use for paintball but 800psi can still be lethal.

Just for those that don't know, co2 is a liquid under pressure and as such self regulates to ~800psi.

Edited by bubba
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Remember back at bathurst when george fury ran for Freddy Gibson in the datsun (forget what model) FJ20DET. He qualified on pole, knocking off all the v8's and no-one could believe it. To do that, they had a fire extinguisher mounted in front of the intercooler and aimed it straight at the intercooler core. And on that fast lap, they released the extinguisher to cool the IC and it lasted for most of the lap and what a difference it made. Smashed the lap time needed for pole and no-one could believe that a 4cyl could go that quick. Anyway, it does help to cool your ic cause when your in traffic, your intercooler is a big heat sink. Its only when you get long continuos airflow through it that it works the way it was intended too.

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What should your intake temp be at anyways.

Mine on a hot Darwin Day hits around 35 degrees but has gotten as low as 20 at night etc. I thought that was pretty dam good really as some others up here are around the 50-70 mark. Pretty high so i think my intercooler is well suuited and working well

I did think bout these kits though and figured water meth setup is cheaper

The 50-70 is the RB26 equipped people (im one of em)

Im beginning to think that because of its position, its getting some pretty bad heatsoak and not giving the true reading.

I will toy with the option of moving it somewhere better i think to see if i cant get a better reading as it takes a good 15mins to my temp to creep upto 40+ on a cool day where the pipes feel the same temp after 5mins driving or 30 :P

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I can't see it replacing WMI. You only use WMI when you need it [using boost and/or injector impedance] and its practically instant. Unless you have the same sensors for C02 - when would you use it?

Also your car starts to get knock, you turn on the C02, and your intake temp drops, but its not instant, there has to be lag. So you turn down your sensor threshhold and then you are probably using C02 when you don't need to?? It would be great for racing or playing, but as an every day driver??? I'm not so sure.

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CO2 would be more suited to pre-drags.

Scenarion:

At the drags... As you come into stage, on goes the CO2.

You'd be ready to go in 5 seconds or so if the spray area was good enough. Thats the main issue with that kind of setup, the surface area you need to cool. You cant have the jet too far away or its going to dissapate too much to get decent cooling, so you'd need a few jets and a pretty big bottle.

And then... You might have more issues if you have a super larger I/C core, 120mm+ or something, to get a decent level of effect perhaps?

I agree though on the street fairly useless vs WMI where its instant.

CO2 would take a few seconds to actually start showing really decent benefit of the I/C temp coming down because you really need something to suck the CO2 through and a stationary car isnt the best

Of course this is all speculation without seeing how the actual spray pattern would work, and the volume/distribution of the CO2

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Another theory,

think how hot your intercooler is, then you spray a freezing cold co2 burst onto it. the aluminium will shrink really fast in the area where the outlet jets are.

how long until the cooler starts to crack??

just a thought.

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I can't see it replacing WMI. You only use WMI when you need it [using boost and/or injector impedance] and its practically instant. Unless you have the same sensors for C02 - when would you use it?

Also your car starts to get knock, you turn on the C02, and your intake temp drops, but its not instant, there has to be lag. So you turn down your sensor threshhold and then you are probably using C02 when you don't need to?? It would be great for racing or playing, but as an every day driver??? I'm not so sure.

I had a setup on a small block with a centrifigal blower an blow thru carb set up, now i would prestage after burnout , purge co2 onto the cooler for about 5-10 sec then had it turn on via a micro switch that was mounted under the pedal.This would only turn on the kit at full throttle, either way i could adjust it (earlier or later). Never could log intake temps an it was carby. As for WMI i made an extra 85rwhp on my skyline an that turns on via a hobbs switch an 6.5#.

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