Put your thinking caps on- need to "fix" mounts for USDM STi IC - Page 5
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This is a discussion on Put your thinking caps on- need to "fix" mounts for USDM STi IC within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; GDR, thanks for your reply. What exactly do I need to get then? JDM STi splitter and shroud (seal)? USDM ...

  1. #61
    Registered User WRXreX's Avatar
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    GDR, thanks for your reply.

    What exactly do I need to get then? JDM STi splitter and shroud (seal)? USDM STi air splitter and shroud won't work on 02 WRX?

    One last question. So you are saying that brackets will fit as long as y-hose is fixed? Isn't IC to throttle body hose too short?

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  3. #62
    Registered User subie04's Avatar
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    somewhat related topic i guess (sorry to hijack). stock wrx ic with an sti hood scoop, splitter and seal - do i use all the sti stuff or will the seal have to be modified to work with my wrx ic or can i use the wrx seal?
    2004 PSM WRX
    Currently Cobb Stage 2

    Blobeye Syndicate #23

  4. #63
    Moderating on the run! Big Sky WRX's Avatar
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    If you reread the thread you'll see there are a couple of obstacles to overcome and how you overcome them will dictate what combo you need.

    If you bolt the STi intercooler in w/o changing the brackets- your IC is sitting back a little further back than "normal". As you have a 02 you need the jdm splitter to fit your STi scoop- HOWEVER you should get the USDM (v8) seal- as this seal angles slightly rearward.

    If you bolt up by chnaging the brackets you've mounted in the "normal" position and you'd want the jdm v7 seal as it comes straight down- doesn't need to angle rearwards.

    This holds true w/ the new WRX's as well- the splitter is dictated by the scoop, the seal is dictated by where the IC resides.

    subie 04- yes you should use your oe seal or modify the existing one- this will seal your ic properly- you may have to get creative along one edge as the STi splitter has a larger opening (as it was designed for a larger ic.
    "Simplify and add lightness." - Colin Chapman

  5. #64
    Registered User WRXreX's Avatar
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    Quote Originally Posted by Big Sky WRX
    If you reread the thread you'll see there are a couple of obstacles to overcome and how you overcome them will dictate what combo you need.

    If you bolt the STi intercooler in w/o changing the brackets- your IC is sitting back a little further back than "normal". As you have a 02 you need the jdm splitter to fit your STi scoop- HOWEVER you should get the USDM (v8) seal- as this seal angles slightly rearward.

    If you bolt up by chnaging the brackets you've mounted in the "normal" position and you'd want the jdm v7 seal as it comes straight down- doesn't need to angle rearwards.

    This holds true w/ the new WRX's as well- the splitter is dictated by the scoop, the seal is dictated by where the IC resides.

    subie 04- yes you should use your oe seal or modify the existing one- this will seal your ic properly- you may have to get creative along one edge as the STi splitter has a larger opening (as it was designed for a larger ic.
    Mine sits a little closer to the TB than "normal"... not further further back than "normal". In this case, which splitter/shroud kit do I need? When you are talking about USDM seal, are you refering to Splitter/seal kit?

    Last edited by WRXreX; 03-01-2006 at 08:26 PM.

  6. #65
    Moderating on the run! Big Sky WRX's Avatar
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    Nope- that's "normal"- the mounting tabs on the STi intecooler were moved forward on the side of the intercooler- compare them w/ your oe ones- thus if they are bolted into the brackets- it sits back.

    You need the STi v7 splitter.

    Are you not going to be mounting the ic to the brackets?
    "Simplify and add lightness." - Colin Chapman

  7. #66
    Registered User WRXreX's Avatar
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    Quote Originally Posted by Big Sky WRX
    Nope- that's "normal"- the mounting tabs on the STi intecooler were moved forward on the side of the intercooler- compare them w/ your oe ones- thus if they are bolted into the brackets- it sits back.

    You need the STi v7 splitter.

    Are you not going to be mounting the ic to the brackets?
    Yes, I will try. I am looking for STi TMIC Y-pipe and longer TB->IC & 6" 90 degree 2 ID" pipe now.

  8. #67
    Moderating on the run! Big Sky WRX's Avatar
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    The aluminum Y is tough to find on it's own, but occasionally I see them. APS used to make one (aluminum Y) they sold individually- haven't seen them around of late so maybe they quit making them???
    "Simplify and add lightness." - Colin Chapman

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    I'm trying to find all the information I need to install and STi tmic and a vf39 on my 06 wrx. So far this thread has been the most beneficial.
    Correct me if I'm wrong, but alot of the issues are resolved if I do my vf39 and my tmic at the same time? Looks like I'll still have to fabricate something on the sides, but I don't think that will be too much trouble. Also, is the stock wrx blow-off valve a direct bolt on for the STi tmic? I bought my IC used on nabisco and the guy included the aluminum Y pipe, so I'm good to go there.
    Thanks for the input.

    worm

  10. #69
    Moderating on the run! Big Sky WRX's Avatar
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    can't say if the vf39 eases things or not- would be interesting to see if it does.

    the WRX BPV is a direct bolt on
    "Simplify and add lightness." - Colin Chapman

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    I look forward to trying it out. I haven't even gotten used to stage 2 yet and I already want more.
    Cobb's stage 3 numbers for the 06 look pretty fun.

  12. #71
    Registered User WRXreX's Avatar
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    Big Sky WRX,

    I have found a way fully extend Samco y-hose by getting a 2" OD aluminum piping. Got this info from scoobymods.com. I am sure you are fully aware of this method.

    I will try extending it out about 1-2" and see if it's possible to correctly align the brackets. It may not fully align correctly due to IC to TB hose being too short. Also, AC line may interfere with IC.

    I will try this method. Problem is locating this 3.5" 2" OD aluminum piping...
    Last edited by WRXreX; 03-03-2006 at 11:59 PM.

  13. #72
    Registered User WRXreX's Avatar
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    Quote Originally Posted by Big Sky WRX
    Nope- that's "normal"- the mounting tabs on the STi intecooler were moved forward on the side of the intercooler- compare them w/ your oe ones- thus if they are bolted into the brackets- it sits back.

    You need the STi v7 splitter.

    Are you not going to be mounting the ic to the brackets?
    Sorry about all these questions. Picture I have posted above... is that mean the IC is sitting correctly as it's suppose to? Are you saying that IC is sitting correctly, but bracket is off by an inch or so?

    That being the case, then I shouldn't even bother trying to align IC to that bracket, correct? It's a bracket that I should try to modify.... am I correct? If that's the case, I will just leave it as is since it doesn't really bother me at all.
    Last edited by WRXreX; 03-04-2006 at 12:10 AM.

  14. #73
    Registered User WRXreX's Avatar
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    Has anyone tried to cut off the mounting tab from STi IC and weld it back to correctly align with WRX bracket?

  15. #74
    Moderating on the run! Big Sky WRX's Avatar
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    Quote Originally Posted by WRXreX
    Has anyone tried to cut off the mounting tab from STi IC and weld it back to correctly align with WRX bracket?
    I looked at this and it didn't look doable- the ic is thin and your right into the "guts" of it pretty quick.

    Yes you are currently in the "normal" position- you essentially have two choices w/ the STi intercooler- both will work.

    One you fab the two mounting brackets so it fits correctly in the "normal" position OR you fashion longer hoses so it fits up to the brackets w/o fabbing.

    Which way you go dictates which seal you need- if you fab the brackets than you need the v7 seal- which comes straight down. If you go the hose route then you'd want the v8 seal w/ angles rearward to make the seal (this makes sense as the ic will be sitting slightly rearward).
    "Simplify and add lightness." - Colin Chapman

  16. #75
    Registered User WRXreX's Avatar
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    deleted... got the information needed.
    Last edited by WRXreX; 03-05-2006 at 08:27 AM.

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