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Old 02-20-2013, 11:45 PM   #1
max0303
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Default gc8 exhaust manifold

i have a gc ej20k motor,i found out my exhaust manifold is leaking,and im just trying to get a oem header replaced,im wondering if the 02 wrx header will fit into my ej20k motor?


thanks guys
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Old 02-21-2013, 04:08 AM   #2
i_c_the_light
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They are the same.
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Old 02-21-2013, 08:27 PM   #3
max0303
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thanks a lot,so bacically all the gc8 model and 02 wrx are the same right??
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Old 02-21-2013, 08:42 PM   #4
i_c_the_light
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Quote:
Originally Posted by max0303
thanks a lot,so bacically all the gc8 model and 02 wrx are the same right??
All single turbo, single scroll turbo manifolds are the same.
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Old 02-21-2013, 10:34 PM   #5
eg33GC
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Quote:
Originally Posted by i_c_the_light View Post
All single turbo, single scroll turbo manifolds are the same.
nope.
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Old 02-22-2013, 01:34 AM   #6
i_c_the_light
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Quote:
Originally Posted by eg33GC View Post
nope.
Which ones are different? Am I missing something?
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Old 02-22-2013, 06:36 AM   #7
Marnix
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Some later engines have a metallic cat in the uppipe, but all single turbo manifolds for turbos located behind PS cylinder head fit.
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Old 02-22-2013, 03:43 PM   #8
i_c_the_light
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Quote:
Originally Posted by Marnix
Some later engines have a metallic cat in the uppipe, but all single turbo manifolds for turbos located behind PS cylinder head fit.
I never include the up pipe as part of the manifold.
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Old 02-22-2013, 03:53 PM   #9
Aphex28
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The early EJ20g manifolds has a shorter runner on the turbo side. I was able to compare side by side with an 02-07 header, but I don't have pictures. But they all start and end in the same place.
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Old 02-22-2013, 06:52 PM   #10
elislider
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they are not "identical" but as stated they all start and end in the same place and have basically the same design. there were minor adjustments made along the way
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Old 02-22-2013, 07:31 PM   #11
eg33GC
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those that say there are minor differences really need to actually hold one in their hand.
Yeah, they bolt in the same, and go to an up pipe the same, but there are huge differences in runner design.
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Old 02-24-2013, 07:58 AM   #12
Jaxx
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Quote:
Originally Posted by Aphex28 View Post
The early EJ20g manifolds has a shorter runner on the turbo side. I was able to compare side by side with an 02-07 header, but I don't have pictures. But they all start and end in the same place.
and they also have a LONGER primary on the LH side i have a picture somewhere
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Old 02-24-2013, 06:48 PM   #13
RealDealTarheel
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I just happened to be tearing down a RA EJ20G and have an EJ205 manifold also, here they are. The top one is EJ205, bottom EJ20G.

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Old 02-25-2013, 03:01 AM   #14
DHRDAN
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Quote:
Originally Posted by RealDealTarheel View Post
I just happened to be tearing down a RA EJ20G and have an EJ205 manifold also, here they are. The top one is EJ205, bottom EJ20G.






You're missing the point..... how is this hard for you people.
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Old 02-25-2013, 05:22 AM   #15
RealDealTarheel
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Hey, **** off.
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Old 02-25-2013, 10:47 AM   #16
Marnix
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That RA manifold is for RA only, also early EJ20G got the short runner EJ205 design.
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Old 02-25-2013, 11:27 AM   #17
RealDealTarheel
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Quote:
Originally Posted by Marnix View Post
That RA manifold is for RA only, also early EJ20G got the short runner EJ205 design.
Good to know, it seems they put a bit more effort into the RA engines than some of the spec c units.
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Old 02-25-2013, 11:27 AM   #18
max0303
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it seems i miss the whole conversation here lol,thanks for the advice for everyone,i just got the 02 wrx header,gonna try if they fits my ej20k motor...thanks x 10000
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Old 03-01-2013, 12:50 PM   #19
69subaru360
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The RA manifold is actually a semi-EL. Each side is EL. I have one it's a nice piece. I combined it with grimmspeed cross and up pipes.
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Old 03-01-2013, 12:56 PM   #20
eg33GC
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These manifolds are not just off RAs, I found that out the expensive way.
The two sethy and I have were off plain STis, but mine had a 5th injector manifold but HLAs, closed deck 1994, B3CA trans. The other was a standard STi closed deck HLA B4AA trans
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Old 04-02-2013, 07:20 PM   #21
t1bud42
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I have a ej20g I have been looking to get a Header and up pipe for I have found some on ebay that look great and want to know some of your thoughts on them?
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Old 04-02-2013, 07:47 PM   #22
eg33GC
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Quote:
Originally Posted by t1bud42 View Post
I have a ej20g I have been looking to get a Header and up pipe for I have found some on ebay that look great and want to know some of your thoughts on them?
Garbage. Stay away. Bad materials, poor fits, terrible welds. The flanges come warped often.
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Old 04-03-2013, 09:59 PM   #23
t1bud42
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What's a Good reasonably cheep header I could get?
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Old 04-04-2013, 10:57 AM   #24
Subbiespeed
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i haven't found a cheap one yet. just remember you pay for what you get.
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Old 04-04-2013, 11:09 PM   #25
t1bud42
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Tomei Expreme Unequal Length Exhaust Manifold is kinda the winner for me but 700 is steep I'm going to have to save a little fit these haha
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