[Real McCoy]

It is 100 degrees today and thank goodness my car is in the shop with the A/C on. But if I was racing, my bottle would be too hot and building excessive pressure. I saw it doing that at Mooresville last week and it was only low 90s. So I got to come up with a method to keep the bottle cool. I'm thinking a wet towel with a small fan blowing on it. I get 4 passes on a bottle with the little time I spray so removing it is not practical. Anyone have any siggestions on keeping the bottle cool in the car on these extremely hot days? RM

 

[sia]

I use my water boxes to heat and cool before I go to the lanes. A little Ice in the box keeps it at a the set temp.

As for in the car itself, cold towels that are kept in a small cooler is what a friend uses.

Matt

 

[WRIGHTRACING]

I've never known anyone to have a problem with this. What do you consider excessive? Also if the bottle is closed the line will always build high pressre but not hurt anything.

 

[bottlefed1]

Yeah wet towels, if its a really hot humid day and the temp is still rising then you could put a little alky in the mix or use a fan or both, just remember the stuff is flammable

Richard Gavle

 

[Real McCoy]

I've never known anyone to have a problem with this. What do you consider excessive? Also if the bottle is closed the line will always build high pressre but not hurt anything.

I run at 950 PSI so excessive to me is 1100 PSI or more. I don't shut my bottle off between passes I just shut the quarter turn valve off. I realize that is not excessive to popping the safety or anything but it is a waste of NOS as well as it takes time to blow it down. I installed a bigger blow off tube today which should help. I had a 1/8 copper line and went to a 3/16 steel brake line. It seems to dump the line alot faster.

 

[95blowncoupe]

Excessive pressure would be any pressure over what your tuneup is for.It is pretty easy here for bottle temps to soar over 100* if unwatched.

 

[WRIGHTRACING]

That's about where we run ours but that's your side of it. So yes take these guys advice and maybe keep a cooler full of ice water and a towel. Or another N2O bottle too cool off that one. LOL that would be quicker.

 

[jakesz28]

I ran into this problem a few weeks ago. I was swaping bottles out after every pass. I had just put a new one in but when I opened the bottle the pressure was 1200. I had to pull it out and I put it in a bucket of ice for a few minutes it dropped the pressure down to about 700psi. So then I had to heat it back up. It was a good thing I had some time between rounds. :-damnit

 

[pt race engines]

we carry the zip lock freezer bags with us and fill a couple with ice and place them at the bottom of the bottle on a towel... take them out right before we pull out....... lay the towel out when we get back and it dries up........ david

 

[SMLBLK66]

1200 psi make a system hit real good!!!!:-Dawi had afriend leave the bottle warmer on a little to long once and it maxed the gauge out. not sure why the blow off valve didint pop but it didnt. needless to say his car ran the fastest its ever ran before! and it held up!:-D

 

[cadpro]

1200 psi make a system hit real good!!!!:-Dawi had afriend leave the bottle warmer on a little to long once and it maxed the gauge out. not sure why the blow off valve didint pop but it didnt. needless to say his car ran the fastest its ever ran before! and it held up!:-D

goes to show how far off his tune-up was...

 

[quickwrench]

The Nitrousaurus-X rocks, but they're pricey (about $400). Heats and cools right to the setpoint you put in.

http://gotsqueeze.com

It probably is not what you want since you did all that work on your brackets and such...just wanted to make sure you knew about it.

 

[BBCStang]

Zip-lock bags with a little ice in them wil keep it in check. Just remember to take them out before the run. They turn into water ballons when you launch

 

[pt race engines]

goes to show how far off his tune-up was...

bingo!!!

 

[excelerater]

Shit,if its 95 degrees out my bottles read perfect,purge em down a little and go.....

 

[pt race engines]

Shit,if its 95 degrees out my bottles read perfect,purge em down a little and go.....

so no different between 95 degrees in the sun or 95 degrees in the shade????david

 

[Junbug's Wagon]

Joe, We had the same problem with our True Street car. Cold rag out of the cooler . Took about 5-7 minutes to get it back down to 975. Hope this helps.

 

[tenfiveracer]

Tips,,,
1)purge to relieve pressure
2)fill your bottles to 90% ( less volume and pressure )
3)ice bags and keep bottles out of direct sunlight

 

[Real McCoy]

I'll try the cold rags and see how that works. The air temp and sun is only one issue. The floor pans and tunnel radiate more heat between rounds than the air temp and sun produce. Thanks for all the help. As always it is appreciated.

 

[nastynovaII]

Tips,,,
1)purge to relieve pressure
2)fill your bottles to 90% ( less volume and pressure )
3)ice bags and keep bottles out of direct sunlight

X2