gc>wrx swap list...need help

Discussion in 'Modifications And Maintenance' started by Justin, Jun 16, 2007.

  1. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273
    ok so i have a company that is either getting an 04 or an 05 from me at an auction. since i'm a noob at these gc swaps i need help coming up with list of stuff i need from the wrx. i wont be buying the whole car, just the pieces i need. the 04 has side damage so pretty much everything is in good shape. i have access to anything in/on the car.


    please post up anything you think i am going to need for the ej20 swap into the 96 L.

    so far i have:
    complete engine(tmic, alternator, engine harness, timing stuff, etc)
    tranny
    driveshaft
    axles
    rear diff
    ecu
    all car wiring: doors, fuel pump, etc(not sure if need)
    front subframe(not needed)
    engine crossmember
    turbo front sway bar
    pedal set
    clutch master cyl
    clutch slave
    shift linkage
    power steering lines from a WRX with the Resevoir and pump
    steering rack(not needed)
    Boost solenoid
    all Vacuum hoses (should come with engine)
    cruise control module
    throttle and cruise control cables
    fuel pump
    fuel pump controller
    radiator


    wiring stuff
    bulk head harness
    bulk head > engine compartment
    engine loom harness
    inside/outside fusebox

    ......
     
  2. dipp
    Offline

    dipp Well-Known Member

    Likes Received:
    25
    Trophy Points:
    213
    every piece of wiring from the doors and such if you have power windows and doors and a jar of asprin if your gonna swap the dash in trust me i know.
     
  3. Deride
    Offline

    Deride Well-Known Member

    Likes Received:
    120
    Trophy Points:
    248
    Engine crossmember, turbo front sway bar, pedal set, clutch master cyl, clutch slave, shift linkage

    Oh and countless bottles of Jagermeister.
     
  4. esperunit
    Offline

    esperunit Well-Known Member

    Likes Received:
    11
    Trophy Points:
    223
    GD crossmember will not work. needs to be a GC turbo crossmember of legacy turbo crossmember.
     
  5. Colin
    Offline

    Colin Well-Known Member

    Likes Received:
    0
    Trophy Points:
    201
    you can just cut the N/A crossmember.
     
  6. Chux
    Offline

    Chux Well-Known Member

    Likes Received:
    1,489
    Trophy Points:
    398
    or use a custom up-pipe to go behind the crossmember and axle.


    but if you plan on using the WRX ECU, I believe you'll need the WRX bulkhead harness too, not just the engine harness. strip it down to just the EM stuff...
     
  7. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273
    so i basically need every piece of wiring on the car?? is it plug and play with the L's power windows and locks, etc??

    yeah i'll definitely need all the stuff to convert to the manual.

    this sounds easy enough. i thought the wrx crossmember bolted in though ?

    updated the list inthe first post, thanks so far guys
     
  8. Deride
    Offline

    Deride Well-Known Member

    Likes Received:
    120
    Trophy Points:
    248
    GD crossmember WILL work. Mike Wray used one. He said he just made some spacers. But it'd probably be easier to just find a GC one for 50 bucks.
     
  9. Nuke
    Offline

    Nuke Well-Known Member

    Likes Received:
    814
    Trophy Points:
    348
    a gt40r too
     
  10. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273
    ej20 stock block + gt40 = ftl
     
  11. Yang
    Offline

    Yang Well-Known Member

    Likes Received:
    3
    Trophy Points:
    223
    you need the wrx fuel pump and power steering I think
     
  12. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273

    how exactly does the power steering stuff convert over?
     
  13. piddster
    Offline

    piddster Lone Wolf

    Likes Received:
    15
    Trophy Points:
    123
    Its a matter of having the correct bracket on the motor fir the pump. For my old car, the turbo pump was larger and I had to use the turbo bracket. On the newer stuff, i don't know:dunno:
     
  14. Colin
    Offline

    Colin Well-Known Member

    Likes Received:
    0
    Trophy Points:
    201
    I think you should just transfer everything from one engine bay to the next, and everything that goes to the engine bay to the next/fuel pump etc. for wiring, again, transfer every aspect of the bulk interior, bulk engine and the lighting/ drivers side fender and fusebox, then just merge the door ends etc.
     
  15. dipp
    Offline

    dipp Well-Known Member

    Likes Received:
    25
    Trophy Points:
    213
    i just pluged the wrx door wiring in and cut and soddered some ends off the gc wiring to the wrx harness and it was easier to use the wrx window controls i just cut them down to make them fit in the door
     
  16. wagonL
    Offline

    wagonL Well-Known Member

    Likes Received:
    1
    Trophy Points:
    203
    um....actually...why dont you just do a eg33 swap? it'll be a lot easier..and produce just about the same amount of power....maybe i should give you a test ride....
     
  17. Dynapar
    Offline

    Dynapar Well-Known Member

    Likes Received:
    31
    Trophy Points:
    358
    +1 The GD x-member will work just fine however the spot where you attach the control arms (i thinks its this part) is alittle too big so you need a few "spacers" to fill in the gap.

    "Installation of the new crossmember is the opposite of removal, with one critical exception. The newer generation GDB chassis has a wider bushing on the front lower control arm, and the control arm slot on the crossmember is correspondingly wider. You must use a carefully selected stack of washers to fill the gap. Just a hint, though. Call them a shim stack, not a washer stack. It makes you sound smarter."

    http://www.sportcompactcarweb.com/tech/0403scc_subaru_gbd_wrx_engine/index.html
     
  18. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273
    more stuff i think..


    power steering lines from a WRX with the Resevoir...these come from the steering rack
    Boost solenoid
    all Vacuum hoses
    cruise control module
    throttle and cruise control cables
     
  19. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273
    i'm guessing fuel pump and fuel pump controller thing
     
  20. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273
    updated OP with wiring i think i need
     
  21. speedyham
    Offline

    speedyham Well-Known Member

    Likes Received:
    1
    Trophy Points:
    103
    You don't need the WRX radiator, and if used it sometimes causes fitment problems with the AC lines. What are you doing for a TBE?

    Other than that I think you are pretty much set.
     
  22. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273

    hmm, so the L radiator doesnt cause cooling issues?..the fins are beat to hell on it right now.

    for tbe i'll probably just buy back my erx wrapped and coated downpipe then i havent figured out the catback. also i'll be prototyping a grimmspeed downpipe soon so if that is around in time i'll just use that.
     
  23. speedyham
    Offline

    speedyham Well-Known Member

    Likes Received:
    1
    Trophy Points:
    103
    I don't think that route is as easy as you think- a lot of the plugs and conection points for the '96 and a WRX are different for the HVAC, ABS, airbag system, lights, and a few other things if I remember correctly. If you have a later model L or RS the wiring and plugs get closer to being all the same. I know on a '93L just about every plug was different and the HVAC setup was much different.
     
  24. AWDimprezaL
    Offline

    AWDimprezaL has more posts than you

    Likes Received:
    1,818
    Trophy Points:
    573
    i wouldnt use the L rad, it just wont do enough. i have jasons old sti rad on mine...cool runnings
     
  25. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273
    so will a wrx radiator fit without problems or not?? it doesnt seem like the wrx is much thicker than the L one
     
  26. speedyham
    Offline

    speedyham Well-Known Member

    Likes Received:
    1
    Trophy Points:
    103
    I have been using the L radiator for 3 years now. In stop and go traffic in 100degree plus days in VA, the engine had no overheating problems. In autocrosses, the engine has had no overheating problems. I don't see any benifit to running a WRX radiator beyond extra margin. I have seen problems with fitting it in along with the stock AC condenser.
     
  27. Dream
    Offline

    Dream Well-Known Member

    Likes Received:
    61
    Trophy Points:
    283
    2 bottles of nitrous, and I think you need them by tonight.
     
  28. asiandude
    Offline

    asiandude Well-Known Member

    Likes Received:
    4
    Trophy Points:
    203
    talk to fuji he is running a wrx radiator.
     
  29. asiandude
    Offline

    asiandude Well-Known Member

    Likes Received:
    4
    Trophy Points:
    203
    o yea im also running an sti radiator. so they should work just fine. just a little mod here and there