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Old 02-11-2001, 08:48 PM   #1
AaronB
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Post WRX intercooler question

Are the WRX intercoolers plumbed for a BOV? If so what is the diameter of tubing used?

Also does anyone have the dimensions of the WRX IC? Has it changed over the model years where a certain year of IC would be more desireable?

Thanks,

Aaron http://www.azscooby.com

[This message has been edited by AaronB (edited February 12, 2001).]
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Old 02-11-2001, 11:41 PM   #2
WRXwannbe
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I just got a 99 WRX intercooler (non-sti) on order from autstralia for $150. The wrx intercoolers don't have an integrated bypass valve. It would have to be before the intercooler, within the plumbing. If you knew someone with skill, you can make a hole in the bottom end tank of the intercooler and put a bypass valve, but thats a waste of money.

Just go and put one downline to the turbo output before the IC. Idealy the best response for bypass would be at the base end tank collector.

as for size of the intercoolers, anything version 3 and before will fit, but anything after (from what I've heard) will need some alterations. We'll see, once I get my MY99 IC.
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Old 02-12-2001, 12:25 AM   #3
XT6Wagon
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Hmm where did you get that IC and do you have any dimentions on it? I may sell my MR2 IC and go with a WRX IC, as it will fit better in the spare tire tray.
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Old 02-12-2001, 01:02 AM   #4
WRXwannbe
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no dimentions, and it was an aussie individual via mrtrally classifieds, believe me I'll do a 100% review on the dimensions once I get it.
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Old 02-12-2001, 02:06 AM   #5
AaronB
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Hmmm the picture iSR has of their WRX IC's they sell seems to show plumbing for an BOV, or at least I am assuming the 90 degree elbow on the bottom is for the BOV.

<IMG SRC="http://www.autocaresubaru.com/201intercooler.jpg" border=0>

Thanks for the reply WRXWannbe. When are you expecting to receive your IC?

Aaron
http://www.azscooby.com

[This message has been edited by AaronB (edited February 12, 2001).]
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Old 02-12-2001, 03:34 AM   #6
Jay_UK
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Hey guys...

There are 3 main types of Impreza intercooler

The early "diaganol" type.. fitted upto the 96 MY of car.. then it changed to the "straight" fitting type (improved design).

Both these types have externally mounting BOV/DV.

The Phase II engine uses the same "straight" fitting design.. but with an improved core and a BOV/DV that bolts directly onto the I/C

The pic you show is of an upside down "straight" design I/C. The small elbow is for the BOV/DV

You might have problems fitting that I/C (one in the picture), most aftermarket ones are so big they only just fit on actual Impreza Turbos, and even then they rub either on the hood or knock against the bulkhead.

J.
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Old 02-12-2001, 03:54 AM   #7
AaronB
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Thanks Jay. That is the type of info I am looking for.

The one the I have pictured above is from iSR's site and is listed as a WRX IC. Looking on the MRT site it appears to look the same as MRT's IC to my untrained eye. Here is MRT's:
<IMG SRC="http://www.mrtrally.com.au/shop/images/products/SUWE126A.jpg" border=0>

Jay,

Do you have pictures of any of the 3 different designs so I know what I am looking for? What years are the Phase II blocks for the WRX's? Is it the same as the RS 99+?

Thanks,

Aaron
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Old 02-12-2001, 01:59 PM   #8
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bump
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Old 02-12-2001, 02:08 PM   #9
stimpy
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Here is the intercooler I am sourcing from a pre MY97 WRX. I am not sure of the exact MY year yet, but it is the older diagonal style. Tim Prudence is running one of these as well. You can find all kinds of MY97+ intercoolers, but the older IC's are rather hard to locate.


<IMG SRC="http://www.susogi.net/stimpy/impreza_small_intercooler1.jpg" border=0>
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Old 02-12-2001, 02:25 PM   #10
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Thanks for that pic.

More questions

What does anyone know about the water to air IC's found on the 90-94 or so UK Legacy Turbos. The shop I have talked to has some that are black and some that are silver. I was wondering what the differences are and whether people in general liked the water/air versions. Has anyone fitted a water/air version?

Thanks,

Aaron
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Old 02-12-2001, 11:21 PM   #11
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Anyone have Water/Air IC experience?
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Old 02-12-2001, 11:25 PM   #12
Ben
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For water to air intercooler, you have to fits a pump to pump the coolent to cool the intercooler, it has much more work on it, and also, the water to air intercooler are direct pumps the water from radiator and the hood scoop is useless.
I just puts an air to air intercooler from 93 WRX to my Legacy turbo and I don't have to do any pumping for water and don't have to worry about the leakage and flash the coolent. I think the air to air intercooler is the cleanest way to cools the air!!
Here comes my pics on my intercooler!
My intercooler is diagonal type:
<IMG SRC="http://www.toronto-subaru-club.com/photoalbum/photos/Benlam/Legacy5.1.jpg" border=0>
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Old 02-13-2001, 02:24 AM   #13
Jay_UK
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Hey..

I havent got time to post anything now..but will later..

I will measure up the stuff for you..

I also have a water/air cooler laying about too

J.
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Old 02-13-2001, 10:41 AM   #14
XT6Wagon
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Mmm Water/Air IC.

I want one BAD. Means my huge SCJ hood scoop would be useless, but can't have everything in life.
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