I've already posted it over at club si, so here is a link and a cut and paste. Feel free to respond to either thread.

http://forums.clubsi.com/ubb/Forum12/HTML/006698.html

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Well I am about 1/2 way through developing a cheap way to do a water spray for a car.
I still need to install it, and possibly work out some cooling for the pump but here is the parts list

Washer pump $7
100ft coil of plastic hose for a swamp cooler $3
Lighters $1
Pins $1.25

You will also need a switch, and possibly some zip ties. A 1 gallon jug with a screw on lid is a nice idea also.

To begin the construction take all your stuff and scatter it out on a table. Then take the lid off the water jug and cut a hole slightly smaller than the hose you are using. I suggest the rubber line that comes with the pump. Cut the tip so that its a U fora 1/8 of an inch or so. This keeps it from sealing to the side of the jug. Now take the lighter and briefly heat the lid, and then push the hose through. Take a pin and heat it up and make a small hole or two to allow air into the jug, but minimal water out if it happens to tip over. Now the plastic hose I got was a little small for the outlet on the pump so I used the ligher to heat the pipe and then I forced the plastic T included with the pump into the end of the line. Be careful as its easy to mess up one or both of the items. Cut the plastic tube to length you need. you can then close the pipe off by melting the end into a blob, or by some other means such as super glue. Now take the pin and poke holes in the tube where ever you want it to spray water. Make sure there is enough holes poked in as the pump hates to create pressure which in turn causes the pump to overheat. Regardless the pump will last a 1/4 mile run for all but the slowest cars.

Questions, comments, ideas?

what about a nozzle?

it's not just gonna splash onto the thing..it's gotta......'spray' hence the name

The pin holes spray quite well. The pattern and direction is a little hard to control, as they are produced by how you make the holes in the pipe. A little angle on the pin or not quite enough heat makes a difference. However it puts alot of water on target for a fraction of the cost of a "real" system.

Not me. i just hit a mud puddle. lol just joshing. Intercooler water spray is very pop on the scoobynet.co.uk. board

Just for your info, test it before you go to a drag strip. If the line offical sees anything leaking from your car, you will be removed and have to re-tech. And yes, I know, this will be used at boost on the run. Just make sure you don't leave water all down the track.

I got my system at Kmart, but it's only good for 75 feet from where I attach the garden hose....

(sorry!)

Try this nozzle (look up Products by Application):

http://www.bete.com/products/nfbig.jpg

www.bete.com

They specialize in fog and spray nozzles of all kinds. Also, most hardware stores will carry some kind of spray nozzle tips. Be creative.

Fuzz

there's no way you can make a intercooler spray kit for $20.00. If you can manage to do it it won't work. I really don't think there's a decent enough sprayer to mist fine enough that will cost less than 20 shipped. Not only that but a bypass valve to tap into the washer fluid line will cost at least 7.00. Just my two cents but i think im right.

I thought you were looking for a mist, not a spray. The mist would condense on the IC and then drip the heat off, while the spray would be more like a water spray.

Unfortunately getting a spray nozzle (the above posted by Fuzz doesn't look like it's fine enough to me) to mist is tough because the pump has to run a high pressure in order to create the force to mist.

Found a better one -

http://www.bete.com/products/bete_3.jpg

http://www.bete.com/products/pages/p.htm

10psi is a lot more reasonable.

Why do you think it has to mist? The purpose of mine is to deliver water to the area. Anyway on my application I likely will mist as its a for the radiator on my SHO and will likely only be used if I get a temp spike in really hot conditions. IE I am using it to keep my seemingly marginal cooling system working well enough not to strand me in the middle of the high desert in the Southwest.

Also I advocate using its own res. Such a cheap (free!!) gallon jug of water. If you are going to use it for only a short time a smaller container will work.

Well, I believe misting trasfers heat better then a spray. I'm not saying it can't be done for under $20, but if it costs a few bucks more to make it more effective, why not? :)

isn't it the act of evaporation that cools it down

the evaping takes away the heat

same way i cool my computer, and the same way that nuclear reactors cool the rods

evaporative cooling

Mist vs. spray is a hard argument to pursue until someone can get their head under a closed hood at 65mph+ to find out what's happening then.
Nuclear reactors have to get water up to the 212 degree mark before they make steam, the point being that whether you're turning liquid water into gaseous water or just turning it into warmer liquid water, you're still taking heat from the air.

You can do it with a real kit for about $50 if you can find somebody in like NZ to send ti to you. Just find somebody there who deals in used parts or wrecked cars. That is where I got a Evo FMIC from a Version6 for $200 and I got a sprayer kit for about $50. Not bad at all.

doesn't the turbo drag guys use nos to spray on the intercooler to lower temp

Only the morons spray N20 on the IC. NEVER spray N20 around the engine bay as it can make a small fire get big in a hell of a hurry. If you want to do a gas spray on the IC try C02 as i puts out fire and has the same cooling affect as it goes from liquid to gas.

I think I'd be more concerned about the N2O cracking the hot IC when it freezes it so quick. CO2 sounds like a sweet way to go too, and all you have to do is steal fire extinguishers to get it. ;)

:lol: @ 8C.
just attach a hose that goes over the IC and have it coming out to the firewall. Attach a Fire Extinguisher to the tube and spray.


edit: :lol::lol: :lol: The thought of a car sitting at a drag strip and just sprays the extingusiher and the whole car is all smokey and white. or at a the autox, spray it on and the whole car becomes engulfed in white smoke. OR at the stop light :lol: someone revs at you and you just spray your stuff and they are sitting there going WHAT THE HELL WAS THAT???...hahahahahah

If you want a cheap nozzle for your sprayer, just get a bottle of Windex or Fantastic and use it's nozzle. A lot of spray cleaners have adjustable nozzles so you can have a stream or mist. It'll cost you all of $1.99. Just remove the pump mechanism and you'll be set.

I'd be reluctant to spray even CO2 on a hot intercooler. That's a pretty sudden temperature change.