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Old 09-20-2011, 01:36 PM   #1
eg33GC
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Default plumbing for the 20G water box

Yes, yes, I have tried searching with logical terms, but I have not found a comprehensive visual thread on how the stock plastic water box is plumbed.

I figured out the turbo to box, the top inlet towards the turbo.
I figured out the line coming from the water pump, the inlet in the center most section.

I am stuck on the last used inlet, the one that faces towards the radiator and is directly below the nipple for the cap overflow.

Any visuals would be very kind. I got my stuff in pieces, so it isn't that I am a derp
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Old 09-20-2011, 01:45 PM   #2
Psychoreo
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Search AWIC and that may yield more results. Wish I could be more help.
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Old 09-20-2011, 01:45 PM   #3
TommyAtomic
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Are you talking about the small radiator return? You have the two forward facing nipples on the waterbox. The one near the cap goes to the coolant overflow. The one below that is a return line from the radiator.
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Old 09-20-2011, 01:54 PM   #4
eg33GC
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so if I am using a usdm radiator with a cap, what shall I do with that line, given it has nothing to do now?
I can just plug it with no ill effect, correct?
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Old 09-20-2011, 02:23 PM   #5
Psychoreo
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Ahhh... that water box. Disregard my previous post.
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Old 09-20-2011, 03:01 PM   #6
eg33GC
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appreciate your willingness to help
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Old 09-20-2011, 07:08 PM   #7
TommyAtomic
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Quote:
Originally Posted by eg33GC View Post
so if I am using a usdm radiator with a cap, what shall I do with that line, given it has nothing to do now?
I can just plug it with no ill effect, correct?
Is this is a usdm radiator from an 02 or newer wrx that your trying to make function with a JDM engine and plumbing?

You may want to check the plumbing on a usdm waterbox. It may lack the line that your trying to find a home for. It may work better with the radiator that you are using.
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Old 09-20-2011, 10:39 PM   #8
eg33GC
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it is a 95l radiator
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