TailHappy

I'm constantly dealing with low airflow heat soak issues, both around town and during autocrosses. It seems like the windshield washer system should be able to be easily modified so to spray onto an intercooler or radiator or condensor instead of on the windshield. There'd be little issues to deal with like how to keep the wipers from going automatically and scraping against the dry windshield, but I'm sure that could be worked around? I heard that the stock pump doesn't provide enough pressure to pull it off, but it seems like if it'll spray it on the windshield, that should be plenty of power.

Anybody tried anything like this? Searched and didn't find anything about it.

BlackR1

I think Crashunit did that with his car. Might need to clean out and tweak the nozzles though... I've noticed that they kind of just dribble at best

ttpowerd

Check the single turbo section. Someone did something similar (I was just reading this today).

TailHappy

Cool, thanks. I get stuck on the FD and PFC forums and forget about the others!

P'cola FD

I did this a while back. I ran a hose from the back washer, into the intercooler duct from the top. The sprayer nozzle I used was for a DIY sprinkler system from Home Depot(My GF's dad had it lying around). It sprays quite well, but I have yet to wire a switch to the pump. One thing you must do is to splice a one way check valve into the sprayer line, or it will dribble out when you don't want it.

TailHappy

Just to clarify, I was talking about spraying the water ONTO the intercooler (pulling the heat out because of the evaporation of the water), not INTO it. Someone recently used the same idea with nitrous, but it actually cooled TOO much and the IAT sensor couldn't react fast enough. I don't think (at least hope!) water would do that.

Looks like the thread mentioned in the single turbo forum was concerning water injection (which also sounds pretty cool).

TailHappy

So you never got to the point of trying it P'cola FD? Anyone happen to know how much this would even cool the IC? Seems like when I was on the dyno last time it was good for about 10 degrees, but that was on a stock IC and it was already heatsoaked at that point.

Maybe Crashunit will chime in....

P'cola FD

I have it on a stock intercooler, and haven't really had the time or inclination to use it yet. I can turn it on by turning the wiper control to spray the rear, but that's not very easy when you're steering and shifting. I imagine it would help, but I have bigger things to worry about, now.

fdracer

Very interesting, does anyone know how to jerry-rig the wipers so that they don't work when you do this, but still work normally when in normal operating mode? Also do you guys think its worth the extra effort to get the tubing all the way around to spray the front of the fmic or would it be effective enough to just spray it from behind.

P'cola FD

It was easier spraying it from the front, because you have somewhere to mount it (the intercooler duct). The way I planned on running the sprayer was to run a couple of wires to the pump with a switch on the console. Not very hard, just a little time consuming.

P'cola FD

Sorry, I just reread your post, and realized you were talking about front mounts. It would help regardless of where you put it. Just make sure you get an appropriate nozzle that will spray with enough pressure.

t-rex7

check this out:
www.autospeed.com/A_0574/P_1/article.html

TailHappy

No prob P'cola FD. I have a FMIC, but the same principles should apply to SMICs.

That's an AWESOME article t-rex! Did you put that on your car?

fdracer

that system does look good, but i was thinking of something a little cheaper-- like free. i really just wanna pull out the nozzles from the stock location and reroute the whole thing to spray the fmic. but how do you disable the wipers when you activate the sprayer, yet still allowing them to function so that they can be used when it's raining?

TailHappy

Yeah, free's what I had in mind too. Essentially, during my breaks at the auto-x I would douse my old stock IC with water to help it cool. Seemed like it'd be cool to be able to do that from inside the car. Unfortunately I bet it'd be a bitch to keep the blades from moving. I'd bet you'd either need a separate switch to run the pump, or a switch to break the circuit to the wiper blades.

luneytune

Canadian cars come with headlight pissers and the switch is in the console. Does your car have the resevoir under the hatch or under the headlight? US cars should have the same wiring just not used, maybe you can take advantage of that? IMHO.

t-rex7

unfortunately i don't, but i keep that site handy for when i'll be at the point when i'll need it.

If you don't want to spend the money on the brains of the system you can still take advantage of what hardware they used; namely the nozzle.

If you want to use the stock system (motor and tank) splice a hose that will go to the IC and put a valve on it. That way you can manually turn it off when you're at the track so no water gets to the windshield. as far as the wipers, is there a seperate wiper fuse? if not you may have to run another fused power line to the motor then pull the stock fuse to cut power to the wipers while the new line will provide power to the pump.

does this make sense? (it's 3:30 am)

UltraEgo

I had that system setup on my car.

https://www.rx7club.com/forum/showth...threadid=98652

There is the tank I used. It goes in the rear no problem and then i ran the hose under that prtective tray for the fuel hoses.. Works very very well! @ an autox the temp difference was massive. You could actually hold the intercooler after a damn hard run!!!

It was worth every cent!

Wade

iTrader: (1)

I ordered three misting nozzles from Mcmaster-carr. The largest, smallest, and one in the middle. I tested all three and picked the one that made the best mist. IMO the stock washer nozzles would not work very well compared to a good misting nozzle. They were < $3 each. If anyone is interested I think my receipt is sitting on the garage floor, I could post the part numbers.

I just ran a hose from the windshield washer sprayer. I only put it on for the occasional autocross or drag race. This was a 30 minute project, I didn' t disable the wipers. I just unplug the harness for the wipers near the ABS unit. Takes 30 seconds. I doubt I'll make it any fancier since I seldom use it.



Wade

fdracer

Sorry, but <$3 is still not free. I really don't think it'll make a difference I use the stock nozzles or ones that give a finer mist. It'll only be used when it's really hot outside or when I'm running hard. Either way the water's gonna evaporate. Either from the heat or from all the air passing through the fmic during a hard run. In fact the stock nozzles might even be better because it can coat the ic with more water. All the water will evaporate slowly, so it won't cool as much as a mister but the cooling effect will last longer. If I used a mister, first of all half the water would be lost to the atmosphere instantly. Secondly the mist will evaporate faster and you'd have a cooler ic but for a shorter period of time. With a mister you'd have to spray more often.

Crashunit

Yes, I did this mod awhile back not only to lower my IC temps, but hopefully my engine bay temps as well on hot days if I needed it. It was a cool and fun mod to do, and took all at the most 30 minutes to do, but mike is right they do tend to dribble after you use them. They work best if you spray them while driving at high speeds so water can get thru the IC and to the radiator. One other draw back was having your windshield wipers go off as you spray .

93 R1

I have some brand new washer pumps w/rubber grommets from a Benz that I might be willing to part with. I have 2 regular pressure ones and 1 high pressure one. If anyone wants to try them out...let me know.

All you gotta do is hook a switch to 12 volts and to the pump and make another container to use. The hell with the wiper stalk idea.