[shotgunsmith]

I can't believe this thread is still alive, and now I have contributed. I hope noone I know reads this

[DunerDude]

Originally Posted by shotgunsmith

I can't believe this thread is still alive, and now I have contributed. I hope noone I know reads this

I disagree. I hope the curious read this.


Anywho, thanks everyone. Maybe thats what my buddy meant, dry ice AROUND the airbox and intake tube not INSIDE

[Boodyrider]

Your buddy is still a moron. No way in hell will he get heat loss of any significant amount over any significant time. 10 sec drag race, maybe.

I suspect he does it just to make people say "WTF?"

[dcorn]

Originally Posted by mylt1

ice on the intake isnt going to shave .5 of a second off your ET's. it really has little to no effect because of the time you run from where your parked to the lineup then to the starting line. by the time your at then line you engine is almost up to normal opp temps if not at temp. i ran the same ET's in my Z28 without ice on the intake as those that did use ice.

You obviously don't have a supercharged vehicle then. Talk to a guy with a stock eaton on his '03/04 Cobra and they will tell you how crucial icing down the supercharger is and putting ice into the intercooler resivoir. Cooling down the blower and preventing heat soak will most certainly give you a half second at the track.

Plus, if your car's operating temperature is the same as after you make a few 1/4 mile passes, something is wrong.

CO2 should only be used on the outside of the intake tract. Some guys will spray nitrous or co2 on an intercooler to chill it and make the air going through much colder. Putting dry ice inside your air box is just retarded. Not to mention it really isn't going to help a jeep.

I will never understand the 'horsepower mods' jeepers do to their tired 4.0 engines. It's not a damn hotrod, you aren't going to get a ton of extra power for offroading from a CAI, exhaust and throttle body. Your only hope is a stroker or V8 swap.

[mylt1]

Originally Posted by dcorn

You obviously don't have a supercharged vehicle then. Talk to a guy with a stock eaton on his '03/04 Cobra and they will tell you how crucial icing down the supercharger is and putting ice into the intercooler resivoir. Cooling down the blower and preventing heat soak will most certainly give you a half second at the track.

Plus, if your car's operating temperature is the same as after you make a few 1/4 mile passes, something is wrong.

CO2 should only be used on the outside of the intake tract. Some guys will spray nitrous or co2 on an intercooler to chill it and make the air going through much colder. Putting dry ice inside your air box is just retarded. Not to mention it really isn't going to help a jeep.

I will never understand the 'horsepower mods' jeepers do to their tired 4.0 engines. It's not a damn hotrod, you aren't going to get a ton of extra power for offroading from a CAI, exhaust and throttle body. Your only hope is a stroker or V8 swap.

whatever you say captain. i have been drag racing since i was 16 and have raced everything from a 2.0 4cly to a 454BB. but you know more than i do.

[dcorn]

Originally Posted by mylt1

whatever you say captain. i have been drag racing since i was 16 and have raced everything from a 2.0 4cly to a 454BB. but you know more than i do.

Apparently I do. I welcome you to come to the Terminator shootout down here in MD and see every single person putting ice in their intercooler tanks and a big bag on top of the blower between each run. Gotta get it as cold as you can because that sucker heats up like crazy going down the track. I don't see how you are denying the fact that colder intake temps will make more power. Why else would people use meth, intercoolers, aftercoolers and CO2?

[cntp]

Originally Posted by Auto-45

Believe it or not,DRY ICE,can be used as an explosive device.I once blew a dog house up with a piece know bigger than your thumb.So watch what you are doing.Make sure that everywhere is vented where you use it.

I gotta ask for more details on this one - dry ice doesn't have that much CO2 in it. 22 grams of dry ice is 22.4 liters of gas when completely sublimated (at STP, would be a bit more at higher temperatures/preassures). I don't see this as enough to be used an an "explosive device" and blow up a doghouse. Unless the doghouse is very small and airtight.

[DoGood]

Originally Posted by cntp

I gotta ask for more details on this one - dry ice doesn't have that much CO2 in it. 22 grams of dry ice is 22.4 liters of gas when completely sublimated (at STP, would be a bit more at higher temperatures/preassures). I don't see this as enough to be used an an "explosive device" and blow up a doghouse. Unless the doghouse is very small and airtight.

Fill 2 liter bottle half way with water. Drop piece of dry ice in bottle. Replace lid on bottle. RUN -dry ice bomb-

I always preferred the "works bomb" Take 2 liter bottle, fill with a product called "the works," I think it is basically a draino type substance you can get at walmart. Take small bits of aluminum foil and put in the bottle, replace lid.

now back on subject... there are better things to do with dry and better things to do to your rig.

[mylt1]

Originally Posted by dcorn

Apparently I do. I welcome you to come to the Terminator shootout down here in MD and see every single person putting ice in their intercooler tanks and a big bag on top of the blower between each run. Gotta get it as cold as you can because that sucker heats up like crazy going down the track. I don't see how you are denying the fact that colder intake temps will make more power. Why else would people use meth, intercoolers, aftercoolers and CO2?

unless you are being pulled to the starting line and not starting your engine until then, the amount of time it takes to get in line and get to the start line, do your burnout, and get pre-staged and staged your supercharger is up to opp temp or very close to it. kinda strange you never see funny cars with ice on there blowers. aluminum, which is what most, if no all, blowers are made of transfers heat so fast that they start to warm up the second you take the ice off it. it goes right along with the myths of airing down your radial tires. kinda strange, as i said before, i was running the same ET's without ice as those who were using it. pros dont use ice and never have, the ones using it are the weekend warriors that thinks it does something. you need to understand how a motor work better before you try and come on here telling me what does and doesnt work.

[Polecat]

Can you imagine the HP and Torque gains of a dry ice setup using a K&N CAI and a Turbonator?

[crcj7]

Originally Posted by Auto-45

Believe it or not,DRY ICE,can be used as an explosive device.I once blew a dog house up with a piece know bigger than your thumb.So watch what you are doing.Make sure that everywhere is vented where you use it.

ahhhhhh you a eod tec? good stuff i dident no that

[dcorn]

Originally Posted by mylt1

unless you are being pulled to the starting line and not starting your engine until then, the amount of time it takes to get in line and get to the start line, do your burnout, and get pre-staged and staged your supercharger is up to opp temp or very close to it. kinda strange you never see funny cars with ice on there blowers. aluminum, which is what most, if no all, blowers are made of transfers heat so fast that they start to warm up the second you take the ice off it. it goes right along with the myths of airing down your radial tires. kinda strange, as i said before, i was running the same ET's without ice as those who were using it. pros dont use ice and never have, the ones using it are the weekend warriors that thinks it does something. you need to understand how a motor work better before you try and come on here telling me what does and doesnt work.

Operating temperature and the temperature after making a few passes is completely different. Superchargers running 20 psi, especially eatons, make the intake air super hot at those pressures. Remember, compressing air will also heat it up, don't you understand how an engine works? Running ice cold fluid through the heat exchanger is going to make the air cooler and allow it to compress more, putting more air into the cylinder and making more power. Take a physics lesson before trying to school an engineer on how an engine works.

People use ice because it keeps your car consistent. Letting the car cool down for 2 hours in between runs will do the same thing, so maybe that's where you get your numbers. Pros don't need to use ice because they aren't making multiple runs in a short amount of time. They are breaking down the engine in between each run and replacing everything.

Oh, and please go down to the local track and tell people that they are wasting money for icing down a supercharged car. Also tell them that intercoolers for turbo cars don't make any sense because hot air makes just as much power as cold air

[Bigbob]

The NHRA Finals starts in Pomona next week. These are the top cars in the nation. I doubt you see much ice being used. Back in the old days it was popular on some of the stock classes. I have never seen ice used on a top fuel car. You see a lot of de-icer used on alcohol cars. If a pro car came up to the starting line with ice packed anywhere on the car it'd be shut down and hauled off. I am sure the safety safari is not real hip on having a 10 lb block of ice coming off a 200-300 mph car. Besides, the ice would need to be outside the supercharger safety housing and there would be zero cooling effect anyway. Back in the 60's and even 70's there were companies that sold cool cans that ran a coil of fuel line through ice. Not sure if it was effective or not. They also would pack ice back then around the intake manifold, very little if any air intake tubes in those days.

[mylt1]

Originally Posted by dcorn

Operating temperature and the temperature after making a few passes is completely different. Superchargers running 20 psi, especially eatons, make the intake air super hot at those pressures. Remember, compressing air will also heat it up, don't you understand how an engine works? Running ice cold fluid through the heat exchanger is going to make the air cooler and allow it to compress more, putting more air into the cylinder and making more power. Take a physics lesson before trying to school an engineer on how an engine works.

People use ice because it keeps your car consistent. Letting the car cool down for 2 hours in between runs will do the same thing, so maybe that's where you get your numbers. Pros don't need to use ice because they aren't making multiple runs in a short amount of time. They are breaking down the engine in between each run and replacing everything.

Oh, and please go down to the local track and tell people that they are wasting money for icing down a supercharged car. Also tell them that intercoolers for turbo cars don't make any sense because hot air makes just as much power as cold air

you need to get that money back for that degree then. 20PSI is NOT going to make a dramatic increase in air temp. thanks for playing though. operating temp is operating temp no matter if your making passes at the track or driving down the street. what do you think the cooling system is for? it MAINTAINS a constant temp. also, a cold engine runs WORSE than a warm one because the ECM is trying to get the motor up to op temp so it runs the car rich, kinda like what a choke does on carbed motors. again, when you learn more about motors and how cars work please feel free to come back and try again.

[Bigbob]

Originally Posted by mylt1

the ECM is trying to get the motor up to op temp so it runs the car rich, kinda like what a choke does on carbed motors.

Correct. On a computer operated vehicle you need to run the cooler air for a long time so the computer learns what is going on. More than the couple minutes a 1/4 mile run is going to take.

Now, on a 4.0 I-6 Jeep engine you can fool the computer by putting the IAT sensor in the intake tube like the 05 and 06 models and insulating the whole deal very well. But you still need to give it a little time for the computer to re-learn what is happening.