Dry Iced Intercooler

[bradkx]

So how bad would it be to throw a dry ice puck up the opening in my hood before some spirited launchings?

I was thinking(mostly theoretically) about getting some, breaking it up into pieces and seeing what ice cold air would do for a launch.

But would it crack something?, just sittin on there, frosting up my intercooler?

:devil:

[Nick S.]

It really isn't going to help out a launch at all. Unless you have launch control you aren't building any boost up at a stop anyway. Seeing as the launch is only 1.7 seconds or so intercooler temps aren't going to matter that much until you get going.

The best things to focus on if you want to launch hard are sticky tires, good clutch, launch control, and quickly slipping your foot off the clutch (but don't dump it.)

Best way to pratice launching is at the dragway because you can compare 60' times to find out what techniques work well for you.

[Murphy2012]

it won't hurt anything it will help, just make sure that you don't run with it on there. Cooling your ic before running poses no threat and colder air = much betta. As nick stated, it won't help your launch but you will be getting cooler air

[kgj996]

I would keep it away from your intake because dry ice is frozen CO2. When it thaws it releases a ton of CO2 gas which will choke your engine. Besides that, the extreme cold might cause stress cracks because of the uneven temperature from top of the intercooler to the bottom, but aluminum is good at transferring heat so it might be OK. The other thing to consider is that your ecu reads intake temps before the turbo from your MAF so any extreme temp change in the intercooler won't be accounted for by the ecu. This may or may not make a difference. It would be cool to data log wide band while you do this to see how your AFRs change before and after cooling the IC.

[jonny-rockets]

^^ how does this affect sprayed intercoolers?

and

and quickly slipping your foot off the clutch (but don't dump it.)

how do you quickly slip your foot off without dumping? i don't know much about this stuff...

[kgj996]

I think the purpose of ic srayers is to cool down all-ready hot ICs, not supercool the air below ambiant temp.

[Murphy2012]

^^ agreed. If you put an ice pack or bag of ice on top of an ic then do runs with and without you will see differences. Might not be much and it won't damage it either.

[banned4life]

^^ agreed. If you put an ice pack or bag of ice on top of an ic then do runs with and without you will see differences. Might not be much and it won't damage it either.


randy tried this last summer at the track. his times actually got worse with it iced.

[bradkx]

Ice is pretty inefficient, plus I think it would block the airflow through the IC. As Dry ice sublimates, there will be no blockage. I probably won't try it, but I wanted to get the forums reaction/had they heard of it before.

[Kevin]

at the subaru day at ned back in the day lol lots of people were doing that to there intercoolers I think the last one they had was over 100 there.

my car kept getting a little slower every run it was so hot.

[Murphy2012]

randy tried this last summer at the track. his times actually got worse with it iced.

It might have been more than the I/C effecting that though. Many things heat up, especially dragging.

[jonny-rockets]

i think if you built some type of mechanism/coldsink to disburse the gaseous super cold CO2 you could definitely have positive effects.

[Robk0000]

It would be pretty simple to do, just take some time, bending pipe and plumbing it to the trunk or whatever. Im sure it can be done diy style under $50.

[Kevin]

i think if you built some type of mechanism/coldsink to disburse the gaseous super cold CO2 you could definitely have positive effects.

they make those for the intercooler there a round section of tubing with holes in it. i think they nos or c02 there called cryo something or other I never paid much attention to them.