Ice on intake runners?

[aqwkmf]

i noticed a few peeps at the track like the TTZ and S14 guys took the 10lb bags of ice u buy for partys and put them on thier intake runners, cai, and manifold. what does this do? basicly cool the engine down for the next run?

[Coch240SX]

That's exactly what's it's supposed to do.  
                                              Jeff

[aqwkmf]

dang im good <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'>

[DSC]

you'll also see ppl spraying their innercoolers...same concept.

[CoasTek240]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (DSC @ Aug. 13 2002,12:53)</td></tr><tr><td id="QUOTE">you'll also see ppl spraying their innercoolers...same concept.</td></tr></table><span id='postcolor'>
spraying what?.. water?
i've alsways wondered that

[BadMoJo]

Its to cool the intake. A colder charger of air is better cuz its &nbsp;more dense than warm air. And more air + more fuel = more power. &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'>

[SilviaDriver]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (CoasTek240 @ Aug. 14 2002,12:02)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (DSC @ Aug. 13 2002,12:53)</td></tr><tr><td id="QUOTE">you'll also see ppl spraying their innercoolers...same concept.</td></tr></table><span id='postcolor'>
spraying what?.. water?
i've alsways wondered that</td></tr></table><span id='postcolor'>
spraying Nawwzzz haha..nah spraying Nitrous i believe..cuz they got this new thing out where when u squeeze nitirous..it goes into ur intercooler..some new thing..forgot who made it..think it was Venom?

[SR20Fastback]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (SilviaDriver @ Aug. 13 2002,11:52)</td></tr><tr><td id="QUOTE"><!--QuoteBegin--CoasTek240+Aug. 14 2002,12<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (CoasTek240 @ Aug. 14 2002,12<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>2)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (DSC @ Aug. 13 2002,12:53)</td></tr><tr><td id="QUOTE">you'll also see ppl spraying their innercoolers...same concept.</td></tr></table><span id='postcolor'>
spraying what?.. water?
i've alsways wondered that</td></tr></table><span id='postcolor'>
spraying Nawwzzz haha..nah spraying Nitrous i believe..cuz they got this new thing out where when u squeeze nitirous..it goes into ur intercooler..some new thing..forgot who made it..think it was Venom?</td></tr></table><span id='postcolor'>
I saw this too, but I think its made by nitrous express...

[adey]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (SilviaDriver @ Aug. 14 2002,02:52)</td></tr><tr><td id="QUOTE">spraying Nawwzzz haha..nah spraying Nitrous i believe..cuz they got this new thing out where when u squeeze nitirous..it goes into ur intercooler..some new thing..forgot who made it..think it was Venom?</td></tr></table><span id='postcolor'>
Actually they DO spray nitrous oxide on (not in) the intercooler. a more popular choice (since it's cheaper) though is to spray water. Getting the intercooler fins wet allows it to dissipate more heat, faster. That's the same reason (along the same lines of) why we sweat when hot.

As for spraying nitrous oxide-- I think mainly it's beacuse a highly pressurized substance will cool down dramatically when released into a low pressure area-- sort of like how a can of hair spray (or spray paint or airbrush propellent) gets cold when you spray it.
Whether N20 has better 'cooling' properties than water though, I'm not sure. I imagine it must, or ppl would just put a bottle of pressurized water/air and spray that instead.

[-E-]

http://www.overboost.com/obs/product/nx_n-tercooler.jpg

[adey]

A question I've always had about ice on your intake manifold/runners is this -

Does the sudden temperature change (shock) have any adverse effects on the metal? I imagine on the atomic level, something must be "not good" for it to go from maybe 150 or 160 deg (more?) all the way down to 45 or so degrees...
Or am I too scarred by the time I drank ice water out of a cup then immediately washed it under really hot water?

[SIEKER]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (adey @ Aug. 14 2002,5:03)</td></tr><tr><td id="QUOTE">A question I've always had about ice on your intake manifold/runners is this -

Does the sudden temperature change (shock) have any adverse effects on the metal? I imagine on the atomic level, something must be "not good" for it to go from maybe 150 or 160 deg (more?) all the way down to 45 or so degrees...
Or am I too scarred by the time I drank ice water out of a cup then immediately washed it under really hot water?</td></tr></table><span id='postcolor'>
same thing happened to me. took a glass out of the dishwasher (it was still hot) and put ice water in it to drink...the glass totally cracked. that's glass though, i wouldn't think it would be bad for your car....unless you have a glass car. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt=':D'>

[aqwkmf]

well i think that the engine has a higer heat capcticy than the bag of ice. i mean that one bag of ice will melt before the engine is engine close to being cool....now if u had alot of water the manifolds would crack.