Air to water Question
Moderators: Helpinators, Moderators
Air to water Question
I am installing a AWIC and have a question. Should I make a tank to increase the water capacity? My brother thinks so and I have heard of it but I thought it was to make up for not haveing a big enough radiator. I am getting a VW Rabbit radiator, so I think it will be fine. Any thoughts? I do need to make a tank for my pump because I got a bilge pump. But if I make a small tank I can fit it in front of the battery, just move the horn, not relocate the battery to the trunk. The bilge pump is $10 at the Wal-Mart, 500gph and it won't make a lot of noise inside a tank filled with water.
02 WRX Sedan, 5mt
93 Sport Sedan, 5mt
93 Sport Sedan, 5mt
Well, I don't know whether it matters or not, but I do not have a seperate water resevoir. THe time and effort don't seem to make it worthwhile. The big thing for me was, if I was going to do it, where to mount it? In my opinion, there is not that much space infront of the battery. The complications of such a small sized tank would not outway the little bit of extra water in the system. If you can get a big tank and mount it somewhere, I might say go for it. Ah, I just read you have a bilge pump..... well, that kind of changes things. Hmmm.
have you seen this site before? Quite interesting and helpful for me....
http://www.netcomuk.co.uk/~gavinp/airwater.htm
Either way, good luck!
have you seen this site before? Quite interesting and helpful for me....
http://www.netcomuk.co.uk/~gavinp/airwater.htm
Either way, good luck!
Zak Malbin
1993 Legacy Turbo
Boost +, AWIC, 3" turbo back, intake, trailer hitch, etc.
1993 Legacy Turbo
Boost +, AWIC, 3" turbo back, intake, trailer hitch, etc.
-
- Knowledgeable
- Posts: 1770
- Joined: Mon Dec 16, 2002 3:20 pm
- Location: Owings Mills, MD
- Contact:
I don't remember the chemical properties of water, however, as an increased volume of water will give you more "buffer" time, will it also take longer to cool when using the same size radiator?
Some air-air vs. air-water info:
http://www.panhandleperformance.com/int ... oler4.html
Tell me what you think. I'm unbiased either way . . .
Some air-air vs. air-water info:
http://www.panhandleperformance.com/int ... oler4.html
Tell me what you think. I'm unbiased either way . . .
[url=http://www.angelfire.com/md3/91turbolegacy/images/On_the_Lawn.jpg]1991 Legacy Turbo (RIP)[/url]
[url=http://www.angelfire.com/md3/91turbolegacy/images/Summer_Car_Wash3.jpg]2000 Celica GT-S[/url]
[url=http://www.angelfire.com/md3/91turbolegacy/images/Summer_Car_Wash3.jpg]2000 Celica GT-S[/url]
-
- Vikash
- Posts: 12517
- Joined: Sun Nov 03, 2002 2:13 am
- Location: USA, OH, Cleveland (sometimes visiting DC though)
- Contact:
I'm not sure about it being better at transferring heat, but there is one nice thing about antifreeze -- it's also antiboil. A mixture of water and ethelyne glycol vaporizes at a higher temperature than water, and I'd hate to be running boiling water and steam through an intercooler setup.
Are you guys setting up some kind of emergency pop-off valve (like a radiator cap or something) to handle this situation? Or is this kind of heat soak just not gonna happen?
Are you guys setting up some kind of emergency pop-off valve (like a radiator cap or something) to handle this situation? Or is this kind of heat soak just not gonna happen?
Anti-freeze doesn't transfer heat better. So I am going to use some water wetter. The stock Liberty AWIC uses a radiator cap that would release excess pressure into an overflow tank. As far as the air-air vs. air-water site, rember they are selling stuff. To V8 guys. 1/4 mile only people. They also said there would be more pressure drop in a bigger IC and that is crap. The pressure drop is from the restricton. I would have liked to make a front mount air-air but didn't want to cut the lower bumper out. What made me decide on air-water was something a guy my brother knows said. "You know when fall comes, those hot days and cold nights. You can tell how much harder your car pulls in the cold. Mine feels like that all the time." He was talking about a air-water IC.
02 WRX Sedan, 5mt
93 Sport Sedan, 5mt
93 Sport Sedan, 5mt
What I run in the air to water setup I have is a item that I picked up at a semi truck service place in this case Freight liner. It is made by Caterpiller and is water, antifreeze, water wetter, and some protective additives for the system all in one package and premixed. One nice thing about these places besides stocking premium oils, parts, and cutting silicone hose to length is that they are open 24-7. We have two here Freight Liner and Mack.
AL(CO)
al@iwtu.net
AL(CO)
al@iwtu.net
I'm confused......
I was under the impression that the air/water ic setup was basically a couple of water jets above the ic on the outside of it. When you spray the water or whatever on there the cool mist soaks the ic radiator-like fins and then avaporates off most of the heat. Now assuming this is how it works, and assuming that whatever does not evaporate will just compile under the ic (ie. the motor tranny etc), why would you use something like antifreeze which stinks and would make a huge mess in the engine compartment? I also read somewhere about using alcohol. That seems like a much better alternative. but hey, I dont know.
Mike
I was under the impression that the air/water ic setup was basically a couple of water jets above the ic on the outside of it. When you spray the water or whatever on there the cool mist soaks the ic radiator-like fins and then avaporates off most of the heat. Now assuming this is how it works, and assuming that whatever does not evaporate will just compile under the ic (ie. the motor tranny etc), why would you use something like antifreeze which stinks and would make a huge mess in the engine compartment? I also read somewhere about using alcohol. That seems like a much better alternative. but hey, I dont know.
Mike
-Mike
2011 Infiniti G37x Sedan - Current
2007 Ducati 800ss - Current
1994 Subaru Legacy Sport Wagon (White)
1994 Subaru Legacy Sport Wagon (Silver)
2003 Infiniri G35
1998 Infiniti I30t
1995 Honda Civic DX
1987 Subaru GL Wagon
1987 Subaru Loyale
2011 Infiniti G37x Sedan - Current
2007 Ducati 800ss - Current
1994 Subaru Legacy Sport Wagon (White)
1994 Subaru Legacy Sport Wagon (Silver)
2003 Infiniri G35
1998 Infiniti I30t
1995 Honda Civic DX
1987 Subaru GL Wagon
1987 Subaru Loyale
No the air to water intercooler systems use a heat exchanger somewhat like a radiator to pick up the heat of the intake charge and a pump to circulate the then heated water to another heat exchanger usually mounted in front of the stock engine coolant radiator. Some of these systems can be very efficient. We have an Laminova intercooler about the size of a Liberty unit that will support 550hp. There are also systems that are designed to pack ice into containers in the lines and get the intake charge below ambient temperatures. This is all done to force a very dense cool charge into the engine. More air+more fuel= More Power
AL(CO)
al@iwtu.net
AL(CO)
al@iwtu.net
magicmike: The best part about an air to water system is that the water can absorb ALOT of energy. As mile hi said, the stock air to water intercooler on the legacy could be used on a HUGE horsepower vehicle, as long as the buffer was large enough.
Usually you are under heavy boost for a short amount of time, as long as the water doesnt reach too high a temp during that time your ok. The water can then cool off while you drive at cruising speeds and be ready for the next boost.
edit: Simply the system has:
A radiator that is sealed so the intake air from the turbo passes through.
Hoses running from that radiator to a pump
A small "transmission" cooler radiator on the front of the vehicle to remove heat.
Usually you are under heavy boost for a short amount of time, as long as the water doesnt reach too high a temp during that time your ok. The water can then cool off while you drive at cruising speeds and be ready for the next boost.
edit: Simply the system has:
A radiator that is sealed so the intake air from the turbo passes through.
Hoses running from that radiator to a pump
A small "transmission" cooler radiator on the front of the vehicle to remove heat.
Last edited by ciper on Wed Mar 05, 2003 10:20 pm, edited 1 time in total.
ohhhh, ok I can visualize that. I was getting confused. Thanks for the clarification.
Mike
Mike
-Mike
2011 Infiniti G37x Sedan - Current
2007 Ducati 800ss - Current
1994 Subaru Legacy Sport Wagon (White)
1994 Subaru Legacy Sport Wagon (Silver)
2003 Infiniri G35
1998 Infiniti I30t
1995 Honda Civic DX
1987 Subaru GL Wagon
1987 Subaru Loyale
2011 Infiniti G37x Sedan - Current
2007 Ducati 800ss - Current
1994 Subaru Legacy Sport Wagon (White)
1994 Subaru Legacy Sport Wagon (Silver)
2003 Infiniri G35
1998 Infiniti I30t
1995 Honda Civic DX
1987 Subaru GL Wagon
1987 Subaru Loyale
-
- First Gear
- Posts: 229
- Joined: Thu Jan 09, 2003 7:19 pm
- Location: USA, WA, Whidbey Island, Bellingham
Oh, and on the air-air sprayer, I think an atomized mist that would cool the air going over the IC would be much better than just wetting the outside. The alcohol would be used in Water Injection system. That goes right into the intake air to cool it, and gets burned in the engine.
02 WRX Sedan, 5mt
93 Sport Sedan, 5mt
93 Sport Sedan, 5mt
If anyone's interested, I've got the FSM intercooler pages scanned & available for viewing.....they're 1.5MB bmp's at present so I'll convert them if anyone wants me to post.......it'll show you EVERYTHING you need to know about the Legacy/Liberty factory AWIC.....
1991 Legacy RS. VOSchip. 154.6kW ATW @ 1bar boost
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
-
- Second Gear
- Posts: 428
- Joined: Sun Apr 20, 2003 3:45 am
- Location: Brisbane, Australia
- Contact:
Liberty air/water coolers are good for 300hp. Distilled water disperses heat far better than glycol or antifreeze, however in your climate i would suggest the antifreeze. that 300hp is based on a standard setup, with a bigger front radiator it will be more efficient again and with a bigger water pump it will also be better. our Liberty's have a 3/4 sized(compared to the radiator) heat exchanger for our water/air setup.
MY02 B4 Liberty, 2 1/2" off the primary with splitter, 3" off the secondary, 3" the rest of the way, completely stainless, k&n filter, ECUtek 3, 500HP walbro, 173kw@all4