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Old 01-09-2007, 06:54 PM   #1
KAX
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Member#: 63292
Join Date: Jun 2004
Chapter/Region: South East
Location: Warner Robins, GA
Vehicle:
2000 Subaru 2.5RS
2002 WRX powered

Default WRX swap, RS radiator, which hose to use?

EDIT: NVM, after looking at the picture of the kinks, i realized i could trim the hose, and it worked.

New Question:
What do I do about the coolant reservoir attached to the WRX engine? The way I have it set up now is The top of the RS radiator (the stock RS's overflow) goes to the WRX reservoir, and the WRX reservoir then feeds to the WRX radiators overflow line which I bolted to the RS radiator and into the overflow tank. Basically, what kind of cap can I put on the RS radiator to where it will act the same as the WRX radiator did with the coolant reservoir. OR, do I need to get rid of the coolant reservoir and run lines to the turbo and whatnot from the RS radiator.
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Last edited by KAX; 01-09-2007 at 07:47 PM.
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Old 01-09-2007, 08:49 PM   #2
t3hWIT
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Member#: 58779
Join Date: Apr 2004
Chapter/Region: MAIC
Location: The Skook
Vehicle:
2015 Honda Fitbox
15 Legacy kid hauler

Default

I believe that you have to mod the RS cap. The kid I did the swap for took care of that, so I can't give you any details on it. As far as your line setup, it sounds right. Here's couple of reference pictures if it helps you:




Edit- As far as the radiator cap goes, heres a quote from SCC's Hybrid How-To:
Quote:
The WRX's pressure cap is in the small coolant tank on the engine. To properly integrate this tank into the system, you'll need to break out the pressure relief valve from the radiator cap so coolant can flow between the filler neck and the coolant tank.

Last edited by t3hWIT; 01-09-2007 at 08:56 PM.
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Old 01-09-2007, 08:53 PM   #3
maddbmxjumper
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Member#: 43044
Join Date: Sep 2003
Chapter/Region: Tri-State
Location: wappingers falls/ kingston
Vehicle:
01 sedona red ej20
stage 3 vf23 rs

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your first set-up for the coolant lines is correct, and yes you either have to 1. mod the rs cap or 2. use a wrx radiator cap.
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Old 01-09-2007, 09:09 PM   #4
KAX
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Member#: 63292
Join Date: Jun 2004
Chapter/Region: South East
Location: Warner Robins, GA
Vehicle:
2000 Subaru 2.5RS
2002 WRX powered

Default

the WRX doesnt have a radiator cap, just the coolant tank cap. How do I remove the valve from the RS cap? this was exactly what I was thinking, so Im guessing I can just cut off the valve part of the cap, but would be nicer if there was a cleaner way to do that.
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Old 01-09-2007, 10:36 PM   #5
subbyspeed
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e30 black/rust

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i just modded my rs cap.. Really, all i did was remove the rubber sealer ring from the valve part of the cap.. Its worked for me for almost 2 years now.
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Old 01-09-2007, 10:41 PM   #6
KAX
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Member#: 63292
Join Date: Jun 2004
Chapter/Region: South East
Location: Warner Robins, GA
Vehicle:
2000 Subaru 2.5RS
2002 WRX powered

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cool. thanks for the help!
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