water to air intercoolers

wrx_nut · Post by **wrx_nut** » Wed Nov 29, 2006 10:23 am

yeah thought so... thanks for that

so whats the go with the pump switch? manual? boost controlled? temp controlled?

whats the best go? on mine i have just wired it up manually to a rocker switch and a relay...

wrx_nut

redskin · Post by **redskin** » Wed Nov 29, 2006 10:32 am

At this point mine also is operated by a direct switch, (manual), but will be set up l hope to run by Boost control, (sorry, seriously stupid when it comes to electrics, not my field), l'll leave it up to my local auto elec.

wrx_nut · Post by **wrx_nut** » Wed Nov 29, 2006 10:50 am

yeah no worries sounds good..are you running a bov?

redskin · Post by **redskin** » Wed Nov 29, 2006 11:13 am

Yep, it's sitting here, will get around to fitting it, it's the standard RS type and mounts on the front of the Waic.

Suby Wan Kenobi · Post by **Suby Wan Kenobi** » Wed Nov 29, 2006 11:04 pm

My pump is on with the ignition on low speed but when the green dash light comes on the pump speeds up. I have it all relayed controlled off the vac switch in the engine bay of the RX

wagonist · Post by **wagonist** » Thu Nov 30, 2006 9:25 am

I hope you guys aren't running the switch so you can turn the pump on and off.
This is very dangerous. Does the water pump on your engine ever turn off while the engine is running?
If you're using the switch to alternate between low speed and high speed, I still wouldn't be doing this. Until you can set it up to run off boost sensors or whatever, then simply run it at full speed with the engine on.

BTW, field tests have shown that the most heat soak through an intercooler happens at idle, not at full throttle (unless you're a drifter or burn out king

)so I'm setting mine up to run at full speed at full throttle & idle, ie no throttle (though this is also when you are lifting off while braking) with an override to run at full speed when I want (track days, etc)

Suby Wan Kenobi · Post by **Suby Wan Kenobi** » Thu Nov 30, 2006 10:51 pm

Mine never goes off while engine is running basically the same setup as on the RS

wrx_nut · Post by **wrx_nut** » Mon Dec 04, 2006 10:15 am

how did you set up the two speeds? ive still gotta get some pipe bent up for the intake on mine....

redskin · Post by **redskin** » Tue Dec 05, 2006 10:24 pm

wrx_nut wrote:how did you set up the two speeds? ive still gotta get some pipe bent up for the intake on mine....

Don't worry too much about setting the pump for two speeds, nearly everybody l've talked to about this has told me to run the pump flat out all the time.
l spoke with my local auto elec the other day about the running of this pump, he also tells me alot run using just a relay and fuse to a switch on the dash and wired to the ignition, hmmm, same system as me! he also said that most of the aftermarket pump kits available are set up this way and come complete with these bits included.
Well, not being a genius when it comes to these things, l'll believe him, but then again as l said, when it comes to these things l'm an idiot looking for an easy way out. The point l'm trying to make here is, (to run flatout), when wired this way if the switch is set to on, the pump will turn off and on automatically every time the key is turned, how does this differ from any other system? it doesn't, they all do that, maybe differently but the end result is the same, pump comes on when you start and off when you shut off and thats all l want it to do.

subanator · Post by **subanator** » Sun Dec 10, 2006 10:36 pm

Here are a couple of good info sites I found a while back about Intercooling:

General Part 1: http://autospeed.drive.com.au/cms/A_0084/article.html

WAIC Part 2: http://autospeed.drive.com.au/cms/article.html?&A=0090

wrx_nut · Post by **wrx_nut** » Sun Dec 24, 2006 6:17 pm

finaly got the pipes bent up for the intercooler.. fitted them today and took it for a spin...noticeable power increase mainly in higher revs... definatly runs cooler than old intake.. 1/4 of the old temp

i have the rs intake pipe from the turbo to intercooler which has the RS blow off valve fitted....

coming onto boost the BOV works fine then once the trottle is closed the BOV makes a small whoosh but then i get a bit of flutter coming through the pod... why would this be happening? rs denso BOV not up to scratch?

very pleased with the outcome of the intercooler setup.. still painting IC pipes and have to weld on a cold air idle pipe.. will get pics up as soon as possible...

wrx_nut

steve_rising_sun · Post by **steve_rising_sun** » Sun Dec 24, 2006 10:13 pm

Flutter is normal you just dont hear it with the standard air filter
Steve

wrx_nut · Post by **wrx_nut** » Mon Dec 25, 2006 5:54 pm

arhh ok nice so its not doing any damage

the flutter is awsome anyway

also when travelling around 100kmh... just coming off the throttle it makes a ttshhh for a while.... i know its ok but with an adjustable valve this can be altered right?

wrx_nut · Post by **wrx_nut** » Tue Jan 02, 2007 8:55 pm

what type of blow off valve do you guys reckon is the go? i have the standard rs one venting to the atmosphere at the moment and it lets out lots of air when just coasting.. in need of an adjustable spring bov

subarursliberty · Post by **subarursliberty** » Wed Jan 03, 2007 11:02 am

I thought I would just add a bit here don't know if you have heard about it but i'll tell you anyways.

RS guys get the pump to run flatout all the time. Mines been like it for a couple of years now. The only thing I have had to do was replace a $5 bearing on the water side of the amature in the motor. I rebuilt it just before I did the mod (which is not hard) and I just put a new one in a month ago.

My RS has been running 16-17psi for 3 years and the BOV still works like it should.

wrx_nut · Post by **wrx_nut** » Wed Jan 03, 2007 1:30 pm

yeah im running my ea82t just at standard boost with the pump running all the time.... the rs bov when coasting seems to open and let out air (to the atmosphere) making the subi run rough..or rich

subarursliberty · Post by **subarursliberty** » Wed Jan 03, 2007 5:04 pm

Yeah subarus don't like the BOV opening into the atmosphere. They need plumb back. Besides it sounds ghey and is illegal.

wrx_nut · Post by **wrx_nut** » Wed Jan 10, 2007 10:28 am

agreed...how could i plum it back into a ea82t intake? any ideas?
im getting a fair bit of flutter through the pod because sometimes the valve doesnt open.....

the pump is now wired up to the igniton so when the ignition is turned on the pump runs.. much better than flicking a switch all the time...

subarursliberty · Post by **subarursliberty** » Wed Jan 10, 2007 11:55 am

Well on the RS it plumps back into the rubber elbow befor the turbo. As long as it's pre turbo and after the air flow meter it should be fine. Closer to the turbo the better as not to confuse the air flow meter.

schultzie · Post by **schultzie** » Wed Jan 10, 2007 9:39 pm

i have decided i would install my WAIC today... im at the point where i need to hook the pump up now from what i have heard i want the hot water going to the pump not the cool water.. is this correct... and is it true that the RS Cooler has a preffered way of flow, if not then ill be on my way.... and hopefully by midday tomorrow ill have the car all setup and if im feeling cleaver it will have dual speed... just depends on how i feel...