I've got the new single nozzle STI IC Splitter ... and would like to provide water to the nozzle using the front window washer sprayer line.

Yes, I know that IDEALLY the sprayer should be auto controlled by boost pressure, throttle position, etc ....

I have the I/C Water Spray momentary switch .... which when I push it, I would like it to activate the front sprayer pump while also activiating a valve that would divert the water through to the IC Sprayer Nozzle instead of the Window Washer nozzles. Activiting the window washer sprayer stalk control would give normal operation to the window washer nozzles.

If this is too complicated ... how about using the rear window washer pump (I have a wagon) ... since I don't need the rear window washer here in Southern CA very often. I wouldn't mind using the end knob of the windshield washer stalk ... but would need to de-acitvate the rear wiper blade itself.

If the rear pump is not strong enough ... perhaps another front washer pump would fit in place of the rear pump? Does anyone know if they are interchangable ... fitment wise?

http://images3.fotki.com/v31/photos/4/43793/216807/4FrontHella-vi.jpg

disconnect your rear hose for the pump & connect it on your sprayer & use the rear switch to turn it on/off... If you're wanting to bypass it or something like that, you're better off adding another pump so you can wire it right.

If you want an automatic mode... try the autospeed controller.

Does anyone know by chance whether the rear window washer sprayer motor/pump for a '03 WRX Wagon is different, LESS powerful then the front sprayer motor/pump ... they are different color ... ? I hooked up the rear sprayer pump to my new style single STI spray nozzle (and discontected the rear wiper motor) ... and get a pretty decent spray ... but I suspect that the front pump is more powerful?

IDEALLY the sprayer should be auto controlled by boost pressure, throttle position

I disagree, that setup is going to spray mist too late to too soon and do you not much good. Ideally IMO a temperature sensor on the intercooler along w/ a on/off switch would be best.

Finally someone who agrees with me ... I just got tired of people telling me that it _had_ to be boost or throttle controlled. :-)

It obviously depends on how you are driving ... if you are doing track laps ... then boost or throttle would be O.K. ... since you are almost always on the gas.

I just want mine for occasional cooling ... mainly heat soak while stopped ... especially before a drag race ... and that relatively looong drawn out third gear run while doing the 1/4 mile.

So yesterday I hooked up my Super Simple System. Ran 1/4 inch tubing from the new style STI IC Splitter, single nozzle, to my rear sprayer pump (WRX Wagon), and unplugged my rear windshield wiper (hardly ever use it in Souther CA) ... so now I can spray when I want using the rear sprayer control on the windshield wiper stalk ... very convenient.

I first tested the front and rear pumps ... and found the rear pump is more powerful ... when attached to the two front window sprayers ... it sprays over the roof ... so powerful enough for my purposes.

I'm also going with Subarus philosophy of using an IC Sprayer ... NOT an IC Mist'er. I think a good strong water spray is best for cooling while at a stop ... when there is no moving air to get the mist through the IC ... which has a lot of heat rising through it.

I'll try to get a photo showing the strength of the water spray that I'm getting using the rear pump motor ...

Finally someone who agrees with me ... I just got tired of people telling me that it _had_ to be boost or throttle controlled. :-)

Yes, you shouldn't listen to everything you read on here. There are plenty of people on here that have great ideas though.

The only real downside I can think of with hooking it up to a temperature switch of some sort is that, unless you create some electronics for it, it will be on for extended periods of time. You might not want the pump to just hose down the engine with water while sitting at a light. I think that is why a boost activated system is easier to implement. I used a boost sensor and it comes on at around 11lbs of boost and I also have a push button so I can activate it while at a stop, or if I think it needs more water at low boost.

btw, EVOs water spray only comes on at really high temp so its not really on at all, at least from what I have seen. Not sure about the STi.

good luck

-anders

w/ a on/off switch

The switch would solve the problem on the simple side. A slightly more complex setup with a simple 555 electronic timer to deactivate the pump after 2-3 seconds after the temperature sensors activates the the mist pump would even better(along w/ a manual toggle switch to disable the whole system when not need/wanted).

I'll repeat that it makes no sense to activate based on boost pressure with the possible exception of road course motorsports competition. You did mention sitting at a light so I'm assuming a daily street driven car. I still don't think that boost pressure switch would be ideal for a road course setup as it would always be pouring water over the intercooler. The trigger of boost pressure is silly in most applications as you are already under boost and your intercooler is heat soaked when you get into boost and it takes time for the water to evaporate and carry the heat away which by that time you're probally not going to be under boost anymore.

Keeping the mister on for more than a few seconds at a time is also not an ideal setup as you're basicly pouring water over the intercooler with anything more than a few seconds. You want a fine mist to allow the water tp evaporate and carry heat away and not just pour water over the thing.

I made up this circuit about a month ago, and just installed it this weekend. Works like a champ.

http://www.offenbacher.us/media/schematic.jpg

Here's what it does:

(1) Push the switch, and the circuit fires the pump for up to ~2.5 seconds, depending on how you set R1.

(2) If you have a UTEC, or similar device that can read RPM, throttle position, intake air temp, coolant temp, and MAP, you can use these variables to define when the I/C will get sprayed while driving.

I think the ideal situation is to have both of the above systems in place, which is what this circuit allows. I also tied in a water level sensor, so you don't run the pumps dry (it's a lot easier to see when you're out of washer fluid ;) ).

Just my .02

http://images3.fotki.com/v33/photos/4/43793/216807/ICSprayerWide-vi.jpg

This is similiar to the current STI ... single central sprayer ... not mist'er ... except the STI has a larger dedicated spray reservoir in the trunk.

http://images3.fotki.com/v33/photos/4/43793/216807/STISprayer-vi.jpg

Photo doesn't show that coverage is pretty complete ... with plentiful water flow.

Super Simple ... rear pump hooked up to single STI nozzle ... rear wiper disconnected ... activate using the rear sprayer dial on windshield washer stalk. Right hand is free between shifts to spray ... a friend is giving me a switch and install for continous spray ...

I believe the dual pump washer reservoir from the Wagon can directly take the place of the single pump reservoir in the sedan ... it would just have to be wired.

Originally posted by makofoto
I just want mine for occasional cooling ... mainly heat soak while stopped ... especially before a drag race ... and that relatively looong drawn out third gear run while doing the 1/4 mile.



in that case, you need a more elaborate system like my nitrous based intercooler spray. water spray is good while the car is moving, but when stopped, not enough forced are into the intercooler... and you're probably spraying hot water on it too if your bottle is inside the engine room.

to make it even cooler, i added a intake airtemp meter plus using the spare solenoid off my utec to make a LED blink when my coolant temp rises above 90C to let me know my car's almost heatsoaked. then i just purge the nitrous about 3 sec and snow the intercooler. :p

Where did you get the splitter with the nozzle?

That's pretty clean, I might have to try that.

Just check out the various vendors ... the new style (single nozzle like the new STI cars) JDM STI splitter I got from Kastle Korner ... Kevin was out of nozzles ... the nozzle I got from Rally Spec.

There are various versions of the splitter ... Rally Spec should also have version 7 which has two nozzles ...

Those splitters by the war are for the larger STI intercooler. You want the proper splitter that seals with the IC. For the stock splitter you could easily drill a hole for the nozzle probably ...

I realized after I posted you had the STI intercooler, very nice.

I'll probably just get the nozzle and put it in myself. Thanks.:)

For my sprayer... I took a hammer to a spraybottle's sprayer apparatus, and basically just ended up with the adjustable nozzle tip. I melted the plastic ( & my hand, too... ouch!) with a soldering iron so I had a nice rounded piece that would fit snuggly into the inside of the tubing I bought at Auto Palace for $1.35. The other end of the tubing went directly onto the rear washer pump, and presto... An Adjustable (misting/spraying/dousing) Manual I/C sprayer for $1.35 + a couple of burnt fingertips!

I told you it was ghetto!
:lol:

Anyways, I have one problem... Living in New England, I want to be able to use my rear wiper (not the sprayer, I can't use that, since the line got pinched somewhere on the way back to the wiper when I installed my stereo) but I don't want it to go off when I spray the intercooler.
So... what I need is to split the wiring so that the wiper works, but isn't activated when the sprayer goes on.
Any suggestions?

One Thought... The wiper stalk on the wagon's has three setting for rear wipers (duplicate of the same function + wiper on)

#1. Twist the switch Up (towards the front of the car) a click and the wiper goes on intermittently.

#2. Twist it Up again (holding it up and it sprays) while wiper goes back and forth 3+ times (depending on how long you hold it).

#3. If you just twist the switch down (towards you) from the original (rear wiper off) position it performs the same function as #2 (spraying + wiping), but when you let go the intermittent function (#1) isn't activated.

So, now that I confused myself and I'm sure you, too... :confused: Bare with me!

Would it be possible to make it so that the intermittent wiping position (#1) and the spraying/wiping position (#2) would still activate the wiper, but when position #3 was activated the wiper would be disconnected and only the sprayer would operate!
:huh: :huh:

I lost you guys, huh! That's alright I lost myself a long time ago!

-Sportwagon

I read it after I posted it and it was a little confusing, and long!

Oh well!

Here's another thread of the same topic!
http://forums.nasioc.com/forums/showthread.php?s=&postid=4362002#post4362002

-Sportwagon:banana: