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Old 02-26-2009, 08:32 PM   #1
silentt
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Default 1183 replacement rad for turbo use?

Hey Guys,
I wasn't able to get a 1819 radiator from anybody in the city in the next couple weeks but there was one 1183 radiator available (93+ impreza, 90-94 NA legacy). On that radiator, there is a place to install a nipple like the turbo rads have, just above where the top radiator hose goes. Would that work or should I wait the 2 weeks (and pay the extra $80) to wait for an 1819? Would my RS fans bolt up to this radiator?

This is going in a 99 Impreza RS with a 2007 STI swap.

Thanks in advance.
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Old 02-26-2009, 09:41 PM   #2
Matt Monson
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Wait. That NA radiator doesn't have enough volume. I know some guys use NA radiators on their swaps but I've never thought it a good idea. You want the thicker core and better cooling of the turbo radiator.
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Old 02-26-2009, 10:00 PM   #3
silentt
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This core is the exact same thickness as the turbo radiator, the dimensions were identical with a slight difference in end tanks. These are aftermarket radiators, not OEM ones.

Edit: It's an aluminum rad with plastic end tanks.

Last edited by silentt; 02-27-2009 at 01:53 AM.
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Old 02-27-2009, 08:50 AM   #4
Matt Monson
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Then I would compare the core thickness to the factory radiator. I realized that you weren't talking about OEM parts but not knowing the part numbers or brand you referred to, I just assumed that like every other one I've ever seen the turbo offering from these guys would be thicker.
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Old 02-27-2009, 12:24 PM   #5
silentt
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I just called the shop I bought the rad from and the owner said that both radiators are 25mm thick (+/- 2mm OEM spec), aluminum single row radiators.
This is the radiator I have (1183):


This is the 1819:



What I was wondering was if I could take the plug out of the top right of the 1183 and put in a nipple to connect to the coolant reservoir on the intake manifold which would function much like that of a radiator from a WRX/STI.
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Old 02-27-2009, 07:42 PM   #6
Matt Monson
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I think that's a bleeder valve. I think once you open that up you won't have an air tight closed system.

Do what I-Speed does. Tear the gasket out of the radiator caps and route the overflow pipe to the turbo tank. Then run the line off the turbo tank to the overflow.
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Old 02-28-2009, 12:55 AM   #7
ckcadavona
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Have you mearsured the 1183 core or are you taking the shop owners word for it. According to the following links the thickness varies between the two models. I am also looking for radiator solution while retaining my a/c condensor.

http://www.go-part.com/9094-subaru-l...3-p-24333.html
http://www.go-part.com/9094-subaru-l...9-p-23203.html
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Old 02-28-2009, 12:06 PM   #8
silentt
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Quote:
Originally Posted by Matt Monson View Post
I think that's a bleeder valve. I think once you open that up you won't have an air tight closed system.
If I add the nipple there and connect it to the coolant reservoir on the intake manifold and then "Y" the other side with the nipple on the rad cap and lead both into the coolant overflow tank, would that not be the same thing as a turbo radiator?

Quote:
Do what I-Speed does. Tear the gasket out of the radiator caps and route the overflow pipe to the turbo tank. Then run the line off the turbo tank to the overflow.
I had that running on my stock RS radiator, didn't like the setup hence me buying a new rad. I ordered one for a Leggy Turbo, got one for a NA leggy.

Quote:
Originally Posted by ckcadavona View Post
Have you mearsured the 1183 core or are you taking the shop owners word for it. According to the following links the thickness varies between the two models. I am also looking for radiator solution while retaining my a/c condensor.

http://www.go-part.com/9094-subaru-l...3-p-24333.html
http://www.go-part.com/9094-subaru-l...9-p-23203.html
Legacy 2.2 Turbo radiator:
Quote:
Core Material : Aluminum
Tank Material : Plastic
Row No : 1
Core Height : 26 7/8"
Core Width : 15 1/2"
Core Depth : 1 1/4"
Inlet Header : 1 7/8" x 16 3/8"
Outlet Header : 1 7/8" x 16 3/8"
Inlet : 1 1/2"
Outlet : 1 1/2"
Eoc : None
Toc : 7 7/8" (Concentric)
Notes : -
Legacy 2.2 NA:
Quote:
Core Material : Aluminum
Tank Material : Plastic
Row No : 1
Core Height : 26 3/8"
Core Width : 14 1/8"
Core Depth : 5/8"
Inlet Header : 1 7/8" x 15"
Outlet Header : 1 7/8" x 15"
Inlet : 1 1/2"
Outlet : 1 1/2"
Eoc : None
Toc : 5 7/8" (Concentric)
Notes : -
Looks like you're right. I'll exchange this ASAP.

Last edited by silentt; 02-28-2009 at 12:17 PM.
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