(Simple) IC Sprayer control help needed
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Joined: Jul 2003
Posts: 20
From: Glendale, CA
Car Info: '03 WRX WGN, Stg 1, No Roof Rack!
(Simple) IC Sprayer control help needed
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 **** 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?
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 **** 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?
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I think you might need a bit more pressure than a windshield washer pump can provide. You're trying to generate a fine mist with an IC sprayer and I don't think those pumps have enough 'umph' to get you that mist. And another thing to think about is, how much water do you need? Those little tanks hold maybe a gallon...? I know it seems like alot when they are used for cleaning the windshield, but that usage is usually infrequent and minimal time wise, maybe 2 seconds. I think you're going to need more than that to accomplish what you want, unless you want to carry around a couple of gallons of water in the back so you can refill that tank when needed.
I think a dedicated system just for your desired purpose would be best. It doesn't need to be aftermarket, just designed with your needs in mind.
Finn
I think a dedicated system just for your desired purpose would be best. It doesn't need to be aftermarket, just designed with your needs in mind.
Finn
Thread Starter
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Joined: Jul 2003
Posts: 20
From: Glendale, CA
Car Info: '03 WRX WGN, Stg 1, No Roof Rack!
As I think I said .. yes I know what an optimal system would entail ... just looking for specific help for what I want to do at the moment. Thanks ...
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Back before the WRX came out in the states, I was enamored by the british websites for this car. I recall one post where the person used a windshield water bottle out of a junker |(I think a VW) and mounted it where he relocated his battery from. ran the tubing and a switch inside and presto----IC cooling.
The STI uses a tank mounted in the trunk, misting is not as important as coverage though.
The STI uses a tank mounted in the trunk, misting is not as important as coverage though.
Thread Starter
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Joined: Jul 2003
Posts: 20
From: Glendale, CA
Car Info: '03 WRX WGN, Stg 1, No Roof Rack!
Finn ... Apparently Subaru doesn't agree with you ... the STI uses a Sprayer ... not a Mist'er. 
I did my Super Simple System ... disconnected the rear wiper on my Wgn, attached at 1/4" tube to the rear pump ... to my STI sprayer nozzle ... and now have IC cooling at the tip of my washer stalk control.
I tested the rear pump ... by simply attaching it to the front window sprayers ... and found that it's quite a bit more powerful then the front washer pump ... the spray went over the top of the car.
Since I basically wanted the sprayer to combat heat soak while at a stop light or waiting in line at the drag races ... and for that relatively long drawn out third gear run at the drag races ... I feel my IC sprayer does what I need it to do.
I would have thought that Subaru would have designed a new nozzle for their new STI Single Nozzle system ... that provides more of a 180 degree coverage ... but they haven't. The nozzle covers more like perhaps 140 degrees ... so the two front corners of the IC might not get coverage ...
I wonder if a mist would be that effective when there is no moving air ... while stopped ... especially since you have heat rising through the IC. Subaru and I think that a coarser spray of water might be the ticket ....
I did my Super Simple System ... disconnected the rear wiper on my Wgn, attached at 1/4" tube to the rear pump ... to my STI sprayer nozzle ... and now have IC cooling at the tip of my washer stalk control.
I tested the rear pump ... by simply attaching it to the front window sprayers ... and found that it's quite a bit more powerful then the front washer pump ... the spray went over the top of the car.
Since I basically wanted the sprayer to combat heat soak while at a stop light or waiting in line at the drag races ... and for that relatively long drawn out third gear run at the drag races ... I feel my IC sprayer does what I need it to do.
I would have thought that Subaru would have designed a new nozzle for their new STI Single Nozzle system ... that provides more of a 180 degree coverage ... but they haven't. The nozzle covers more like perhaps 140 degrees ... so the two front corners of the IC might not get coverage ...
I wonder if a mist would be that effective when there is no moving air ... while stopped ... especially since you have heat rising through the IC. Subaru and I think that a coarser spray of water might be the ticket ....
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Water is water. Whether it is a mist or a jet it does not matter. The same water will remove the same amount of heat for a given volume. I think the misting would work a little better because you would be more likely to get it to settle on the intercooler. If you had a high pressure(not really high) jet then most of the water would run through the IC before it removed the maximum amount of heat. If all the water is sticking though it is removing just as much heat with a mist or a spray.
Stephen
Stephen
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the water helps remove the heat better than air because it has a higher specific heat capacity. which means than it transfers more heat than air under the exact same situtation. so as long as the water is on the ic cooloing fins it will remove heat.a mist will work better to keep the ic cooler, becuase the water is less likely to roll off of the ic. basic equation .. heat transfered= flow rate x specific heat capacity x difference in temperature....... increase any of the factor and that means more hp
Thread Starter
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Posts: 20
From: Glendale, CA
Car Info: '03 WRX WGN, Stg 1, No Roof Rack!
water rolling off the IC takes heat with it ... physically and when it evaporates.
a lot of the mist in the air goes past the IC fins .... but evaporating mist cools the air ... but as you said ... water cools more the air ...
There is a reason why Subaru doesn't use mist'ers ...
a lot of the mist in the air goes past the IC fins .... but evaporating mist cools the air ... but as you said ... water cools more the air ...
There is a reason why Subaru doesn't use mist'ers ...
Thread Starter
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Joined: Jul 2003
Posts: 20
From: Glendale, CA
Car Info: '03 WRX WGN, Stg 1, No Roof Rack!
I don't think you need a temperature gauge ... when one is stopped for a couple of minutes ... the IC starts getting HOT ... at least in our typical Southern CA weather. I think it also makes a difference when one just wants to do a fast squirt ... and I like being able to pre cool the IC ... not waiting to be in a fast run ... when the boost would trigger the sprayer.
Some people think that you can't cool the IC below ambient temperature ... but that doesn not take into account the cooling effect of evaporation. I believe the difference would be like a dry thermometer and a thermometer with the bulb wrapped in something water wet ... the evaporating water would cool that thermometer below the dry thermometer ...
Some people think that you can't cool the IC below ambient temperature ... but that doesn not take into account the cooling effect of evaporation. I believe the difference would be like a dry thermometer and a thermometer with the bulb wrapped in something water wet ... the evaporating water would cool that thermometer below the dry thermometer ...
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Re: (Simple) IC Sprayer control help needed
Originally posted by makofoto
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.
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.
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