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Old 02-27-2001, 03:08 PM   #1
stimpy
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Post WRX vs. Legacy Turbo Headers

This is probably a question more for the tuners out there... (CTC, Cobb, iSR?) Anybody know if the turbo location is different or the same between the WRX headers and the legacy turbo headers. I currently have the legacy turbo headers ready to go onto my car, but I do not have a downpipe. I was wondering if a WRX downpipe (stock or aftermarket) will work with the IHI RHB52 turbo, position, and my existing catback. I will probably end up having a custom downpipe made locally, but I am curious about this. Trey has already said that the Legacy downpipe will not work, but I haven't heard anything of the WRX downpipe.

-Jon
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Old 02-27-2001, 03:46 PM   #2
Imprezer
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I am no tuner, but I know that the manifolds are the same as well as the positioning on the turbo. You can mix-match WRX and Legacy Turbo parts.
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Old 02-27-2001, 04:09 PM   #3
stimpy
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Cool, that is really exciting. I guess I will have to see if I can locate a stock WRX downpipe to test fit. Time to hit the UK and AU message board for donations . The possibilities just opened up for bolt-on upgrades for the legacy turbo adaptation.

Does this also mean that if I took an IHI VF22 turbo I could use a number of the MY94-MY96 WRX intakes?

My initial thoughts on this were that since the legacy turbo comes with a 90 degree adapter for the intake, the turbo was mounted lower than the WRX turbo, which uses an intake pipe going straight into the turbo.

-Jon
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Old 02-27-2001, 04:15 PM   #4
Shik
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Jon, MY93-96 WRX's also used the 90 degree elbow into the turbo. The intake set-up on those WRX's is identical to that of the Legacy Turbo. You don't need a different turbo to run an aftermarket intake on a Legacy turbo set-up. Just make sure it is for the 93-96 WRX.

The intake began to run under the intake manifold runners in 97.
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Old 02-27-2001, 04:36 PM   #5
stimpy
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Thanks for the info Shik.

Basically, this turbo setup I am doing is a MY93-MY96 WRX kit with a smaller IHI RHB52 turbo? Meaning anything from those model years should just bolt right on?

This will be really cool if this holds up to be true.

-Jon
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Old 02-28-2001, 04:52 AM   #6
ASR
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Dont you have to use a legacy turbo crosframe to be able to run those up and down pipes?
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Old 02-28-2001, 08:39 AM   #7
stimpy
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Yes, I have the legacy turbo crossmember waiting to be installed on a warmer weekend. It has been cold here lately, so its just sitting in my closet.

-Jon
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Old 02-28-2001, 01:25 PM   #8
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Stimpy here are some tips on how to install the x-member fast. I have done it 4 time at lease and can swap x-members in about 20-25 min. Jack up the car. Put it on jack stands. Unbolt the engine mounts from the x-member. Remove the pitching rod. Jack up the engine and bit. Maybe an 1" or so. Remove the pin from where the steering rack attaches to each hub. Remove that weird 19mm nut. Wack the top of the steering rack arm bold and it will drop out of the hub. Unbold the control arms from both the x-member and the unberbody, so that the only place they remain attached to is the hub. Crawl under the car from the front drivers side. Find where the steering rack attaches to the steering column/shatf/pole. Remove the 2 12mm bolts and before sliding the joint off, mark how it was sittng there so that u won't have to reallign your steering afterwards. Slide the joint off. Remove te power steering lines where they connect to the rack on the lower passenger side. You 17mm and 14mm wrenches. Cover all of the lines so that nothing gets inside. Duct tape them or something. Remove the 2 19mm bolts on each side where the x-member is attached to the body. Remove the old x-member and install the new one reversing the insructions. Let me know if you need help. I can be more specific. Damn, I even remember the bolt/nut sizes.
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Old 02-28-2001, 01:31 PM   #9
stimpy
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That is scary that you just pulled that from your head. Thank you so much for that description, I have been needing some specific instructions. That helps a BUNCH.

This will be going up onto my website (documentation of the whole ordeal) for everybody to see.

-Jon
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Old 02-28-2001, 03:25 PM   #10
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Hmm...I guess this means i can use a WRX downpipe on my Turbo, as long as it's from the right years.

So they changed the routing in 97+? Is that why the intercoolers don't fit well?
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Old 02-28-2001, 03:40 PM   #11
Jessie James
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Stimpy! I'm following in your footsteps! Heh!

When I go for it, I'm gonna photo and document everything as well. We'll have to keep each other informed!

BTW you all, Stimpy has a great site with lots of info about the turbo kit. Check it out. Stimpy, what's the URL?

James

[This message has been edited by RS25.com (edited February 28, 2001).]
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Old 02-28-2001, 05:14 PM   #12
stimpy
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DLC, I am not 100% sure that the downpipe will work yet; I am trying to get a WRX downpipe to test fit right now.

My website is www.susogi.net/stimpy .

-Jon
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