I see people all the time placing bags of ice on their instake to cool then engine down before the runs... Why is that I have never heard of anyone purging their system inside their engine bay? would it be cold enough to make any difference? (I'm sure there is a very logical explanation why people don't do it... sorry! I hope the question is not too dumb)
leo

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1993 Z-28
13.7s@99.97mph
SS hood
Rockford: amps, and sub
Cadence: EQ, and CAP 1.0
BM Quart: components
Pioneer: Head Unit
100% self-install
http://www.tereschubert.com/camaro

 

there are a few problems with this.

One is that in order to cool it down enough to make a dif you would be wasting n20 (which isn't cheap) and also causing your bottle pressure to go to ****.

Another reason is cause there is the posibility that N20 could get into your intake and cause detination.

 

I know people do it that way because there hiding it

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93z28 building new motor
superram 2 stage directport an lots lots more!!!!

 

I have never had a n2o system on my car, so I don't know to much about it anyway, what I heard is that is pretty damn cold, so I though it might make a different if it was purged aiming the top of the intake in just seconds.

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1993 Z-28
13.7s@99.97mph (CAIs and Cut-out)
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Hooker Lts => Custom "Y" pipe with two cats, e-mail for pics, (It's possible! )
Lt-4 Hot Cam, 1.6rr, and springs (Crane Cam lifters)
new times coming soon!

http://www.tereschubert.com/camaro
(site needs update for cam and headers)

 

You could do it, and it would cool the intake off, but most sanctioning bodys only allow you to purge the nitrous outside the car. And also, think of it this way. What do you think happens when you hit the nitrous button? All that nitrous is injected inside your intake. As the nitrous exits the nozzle/spraybar, it boils as it hits the atmosphere. This happens at -130 degrees. That intake charge is very cold. No reason to purge on intake before the run, it will get very chilled during the pass!

 

bottom line... unless vast amounts of N02 is being purged for a long duration (wasteful), it's not going to cool the intake much at all. I could go into the thermodynamics and heat transfer of it all, but please take my word for it.

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Red 96 Z28, A4, 3.42 gears, K&N CAI, Hypertech air foil, Hypertech PP+ w/scan, GMS MAF, B&M Super Cooler trans cooler, IAT relocate, DRL conversion, MSD 6AL, Flowmaster American Thunder Cat-Back, FLP Headers, BMR STB, 150hp NOS

SLP SFCs, WS6 Shocks and Springs, and Mezier Water Pump in boxes, awaiting installation