intercooler sprayer

[Ian-PT-GT]

quote:Originally posted by dfunkdj

What about that new co2 cryo cool thing that you put inline right before the throttle body?? Has anyone tried it yet ???

Don

I like the idea but I would place it after the turbo to cool down the charge and let the IC lower it a little more... or even better, between the IC and the Throttle body...

They have an IC sprayer but I have heard of car intakes sucking the CO2 and lowering performance... This is where I got the Idea that if you do it with N2O, it will also be sucked and improve performance slightly...

Ian

[deviatedsebring]

can you use nitrogen? or will you have the same problem as co2?

[Ian-PT-GT]

quote:Originally posted by deviatedsebring

can you use nitrogen? or will you have the same problem as co2?

The added benefit is to get more oxigen into the engine, the computer will notice this and increase the injector dutty cycle to compensate for the extra air going into the engine (up to a point, adding fuel and increasing HP. the important part of the HP building process is to take control of the Wastegate. if you let the computer control it, it will decrease Boost making the HP gain minimal. But if you control the wastegate with a Electronic Boost controller (EBC) or with an adjustable Wastegate. The story is diferent. MBC can also work but it is harder to adjust. The reason I recomend EBCs is because of their flexibility and adjustability.

Nitrogen is an inert gas, in it's liquid state it is supercooled. in its gas state it is warmed to ambient temp. I used nitrogen in it's liquid state to cool dow electronics in Missiles, and in it's gas state to control spontaniously combustible items from burning up. Argon also works nicely but it costs even more!

It will work perfectly with the IC but the cost of Nitrogen per pound is more than buying N20.

Nitrous Oxide is Nitrogen and Oxigen combined in a 2-1 relation. The nitrogen in the mixture is what makes the cooling effect and the Oxigen is used with the fuel for power. This is the reason for calling the N2O, the Poor mans supercharger... When N2O is released, it boils from -160 to ambient air braking down the molecule and releasing the oxigen to be used. at 800PSI the N20 will stay liquid but when it is released to a 14.6PSI it takes about a seccond to become a gas and break down the molecule. that is the reason that you place the N2O injector as close as possible in to the engine. to make sure that you get liquid N2O inside the Cylinder and letting it expand inside at the compression cycle of the engine. if it reaches the cylinder in a gas form it has started to break down and less oxigen goes into the combustion chamber. but you will still have a small HP increase.

Conclusion, Nitrogen should work but it will cost you more per fill and you may be loosing some HP increase because of the lack of oxigen. On the other hand, if you use it for just cooling purpose, you can say that the waranty won't be voided becaise it is not N2O... O well I at least I tried[]

Ian

[deviatedsebring]

cooling the inter cooler is what i was thinking of. i didnt know about the cost though. thanks for the info

[Jason_L]

Off topic, but related to a comment made:
I have toyed with the idea of using a small shot in front of the turbo inlet for compressor cooling as well, as I've seen a air filter with this set-up being advertised in the various mags. I was hesitant for the reason mentioned above, but at the same time I'm thinking it doesn't damage the pistons or valves, which are a lot hotter then the compressor is.. And a guy on the SRT forums has done this with GN's and had no problems.. maybe it's the size of the shot? I dunno, but I haven't got the nerve to try it yet..

[dfunkdj]

I think the cryo cooler goes inline right before going into the throttle body not before the turbo

Don

[Ian-PT-GT]

There is a diference between the Compresor impeller and the Pistons.

The turbo impellers are operating at extreme temps all the time, they can get red hot.

Pistons have a dense crown and the cylinder temp is monitored. If a Piston would get red hot, It would self destruct in less than a seccond. I have seen this.

N2O goes inside the cylinder alredy mixed with fuel. If you would shoot nitrous inside a cylinder without the proper fuel, it will lean off the charts! resulting in total destruction of the engine in one second, welding the piston to the conecting rod or the block, bowing valves and producind a horrible blowdown!. If you are lucky, you will blow the head gasket.

In the Turbo, damage is easier. the blades are very thin, spinning at RPMs well over 50,000! add the extreme temp and it is on the edge already. We have coolant lines going to the Turbo housing but it's mission is to keep the turbo bearing cartridge from overheating. if you shoot N2O into the impellers, it will cool it down almost instantly from temps over 400 degrees.

Have you ever noticed that an ice cube cracks when you drop it in water. It cracks from the sudden change of temp.

This will also happen to metal. If you add high speed and pressure. it is a disaster waiting to happen. I saw this first hand with a WRX.

[img] http://www.turbomagazine.com/tech/03...broken07_z.jpg [/img]

The cryo bulb is designed for N/A engines. You can put it in front of the turbo but the gain will be minimal because the Turbo will heat the charge due to compression. This will be the same as driving in a cold day... If you use it after the Turbo, the gains are biger.


Ian