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Old 07-08-2013, 12:42 PM   #1
wintersun
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Default GC8 R12 A/C swap to an 07 STi?

I did some searching but can't find a good answer. I just got my 07 and gave my previous GC8 to my brother as his first car, but I'm gunna miss the hell out of that R12 freon, especially this time of year, and the fact I'll be working in Miami for a good portion of the summer. Is it at all possible to swap the GC8's A/C valves into a (currently stock) 07 sti? I never had to work on A/C before so I'm not that experienced with R12/R134 differences. If there's a way, are there any DIY threads I can read up on?

My brother is okay with the swap, btw.
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Old 07-08-2013, 12:48 PM   #2
Hondaslayer
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It's not just "valves" it's also the various seals, o-rings etc...

I'm gonna go with "bad ideas for $500, Alex"
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Old 07-08-2013, 12:56 PM   #3
wintersun
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Originally Posted by Hondaslayer View Post
It's not just "valves" it's also the various seals, o-rings etc...

I'm gonna go with "bad ideas for $500, Alex"


So I'm guessing it's one of those "possible doesn't mean practical" kinda things?
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Old 07-08-2013, 03:47 PM   #4
geronimo81
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Pretty sure GC's run R134A.....That's what I've always used to charge mine haha.
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Old 07-12-2013, 07:25 PM   #5
wintersun
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Quote:
Originally Posted by geronimo81 View Post
Pretty sure GC's run R134A.....That's what I've always used to charge mine haha.
well it's a '93 so it's probably before they switched to R134A. I haven't tried charging mine with 134, so I wouldn't know
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Old 07-13-2013, 06:25 PM   #6
xXOli450Xx
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no you cant, you can only upgrade r12 to r134a
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Old 07-14-2013, 08:35 AM   #7
JoshP
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Quote:
Originally Posted by xXOli450Xx View Post
no you cant, you can only upgrade r12 to r134a
that's not an upgrade
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Old 07-14-2013, 09:29 AM   #8
carnz-pj-410
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Quote:
Originally Posted by JoshP View Post
that's not an upgrade
^this


Quote:
Originally Posted by wintersun View Post
I did some searching but can't find a good answer. I just got my 07 and gave my previous GC8 to my brother as his first car, but I'm gunna miss the hell out of that R12 freon, especially this time of year, and the fact I'll be working in Miami for a good portion of the summer. Is it at all possible to swap the GC8's A/C valves into a (currently stock) 07 sti? I never had to work on A/C before so I'm not that experienced with R12/R134 differences. If there's a way, are there any DIY threads I can read up on?

My brother is okay with the swap, btw.
the GC lines route differently than the GD chassis, and i'm sure the evaporator for the GC would not fit in the GD location, and you would need to swap the compressor and condenser as well.

it would need a lot of custom work, I know R12 is way better than R134A, but I wouldn't attempt this one and I've thought about it in the past too.

if you had a GC then hell yeah no problem swap it all over.

all of the 1993 Impreza's A/C components have unique part numbers since it is the only year of R12 for Impreza, and the stuff is not interchangeable, so you would need to swap the complete system, not piece meal it
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Old 07-14-2013, 09:30 AM   #9
Jessekrs123
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Subaru didn't switch to R-134a until 1994.

You would need a new receiver/drier to accommodate for the R12, and switch up lubricating oils for the R12. You would probably need to switch up some fittings/piping as well.

I am aware that R12 supposedly creates colder temperatures than r134a, but in all honestly, r134a should be cool enough to keep you comfortable, and you don't have to do all the work to switch it over.
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