6 speed swap
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This is a discussion on 6 speed swap within the Transmission & AWD forums, part of the Tech & Modifying & General Repairs category; alright the time has come my fellow wry friends, time to get the 6 speed swap done!! just want to ...

  1. #1
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    6 speed swap

    alright the time has come my fellow wry friends, time to get the 6 speed swap done!!

    just want to know everything ill need to do the complete swap besides the obvious things

    -trans
    -axles
    -sti brembo
    -rotors/hub assembly
    -rear diff
    -????

    any help is appreciated
    2007 Impreza WRX
    1991 UCF 10 VIP

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  3. #2
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    DCCD controller. Aftermarket or OEM.

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    zax
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    Technically, you don't NEED the DCCD controller, though without the controller the DCCD will revert to "open" and the trans will only use the Torsen center. Also, be careful with which 6MT you purchase. Most JDM STi 6MTs do not offer the DCCD as this was an option for STis in Japan and/or Type RAs over the years.

    Depending on the year of the car and year of the trans, you will also need a new driveshaft.
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  5. #4
    Registered User SKI.WRX's Avatar
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    Master swap list for 04-07 Sti 6 speed into WRX - NASIOC

    That is the thread for you. Basically it depends on what transmission you get what your parts list will be exactly.

    Some excerpts:

    "04 USDM Sti 6 speed:
    -transmission
    -driveshaft from an automatic or from Sti with a yolk for a wrx
    -3.90 R&P gear to replace the 3.54 in the WRX
    OR
    -R180 rear differential and Sti hubs, rotors, brakes and axles*
    -6 speed shifter and assembly****
    -front axles and hubs can be reused provided the transmission still has the axle stubs in it.
    -DCCD controller optional but recommended**
    -6-speed clutch fork and slave cylinder?
    -5speed or 6 speed flywheel and clutch"

    "05 USDM Sti 6 speed:
    -transmission
    -driveshaft
    -3.90 R&P gear to replace the 3.54 in the WRX
    OR
    -R180 rear differential and Sti hubs, rotors, brakes and axles*
    -6 speed shifter and assembly****
    -hubs or Stubs? Not clear on this one for the front but it seems there is extra that needs to be done with an 05***
    -DCCD controller optional but recommended**
    -6-speed clutch fork and slave cylinder?
    -5 speed or 6 speed clutch and flywheel"

    "06 USDM Sti 6 speed:
    -transmission
    -driveshaft
    -Stock R160 can be used without changing the gear ratio due to change in 06 that makes the ceneter diff a 1.1:1 vs the old 1.0:1
    -stock rear axles can be used on rear due to no need to change the rear diff
    -front...04 Sti Axle stubs can be ordered along with seals and clips that retains the WRX front Axles, hubs, etc? Special seals are needed. Axle Stub Part Number: 38415AA110
    Circlip Part Number: 805329010 from Wrinkleboi's thread about this***
    -6 speed shifter and assembly****
    -DCCD controller optional**
    -6-speed clutch fork and slave cylinder?
    -5 speed and 6 speed clutch and flywheel"

    "07 USDM Sti 6 speed: into wrx
    -transmission
    -driveshaft
    -6 speed shifter and assembly****
    -6-speed clutch fork and slave cylinder for 2007 sti
    R160 rear diff (02-05 wrx)
    6 speed clutch and flywheel
    Circlips from 2004 sti, oil seals and axle stubs"

  6. #5
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    Quote Originally Posted by SKI.WRX View Post
    Master swap list for 04-07 Sti 6 speed into WRX - NASIOC

    That is the thread for you. Basically it depends on what transmission you get what your parts list will be exactly.

    Some excerpts:

    "04 USDM Sti 6 speed:
    -transmission
    -driveshaft from an automatic or from Sti with a yolk for a wrx
    -3.90 R&P gear to replace the 3.54 in the WRX
    OR
    -R180 rear differential and Sti hubs, rotors, brakes and axles*
    -6 speed shifter and assembly****
    -front axles and hubs can be reused provided the transmission still has the axle stubs in it.
    -DCCD controller optional but recommended**
    -6-speed clutch fork and slave cylinder?
    -5speed or 6 speed flywheel and clutch"

    "05 USDM Sti 6 speed:
    -transmission
    -driveshaft
    -3.90 R&P gear to replace the 3.54 in the WRX
    OR
    -R180 rear differential and Sti hubs, rotors, brakes and axles*
    -6 speed shifter and assembly****
    -hubs or Stubs? Not clear on this one for the front but it seems there is extra that needs to be done with an 05***
    -DCCD controller optional but recommended**
    -6-speed clutch fork and slave cylinder?
    -5 speed or 6 speed clutch and flywheel"

    "06 USDM Sti 6 speed:
    -transmission
    -driveshaft
    -Stock R160 can be used without changing the gear ratio due to change in 06 that makes the ceneter diff a 1.1:1 vs the old 1.0:1
    -stock rear axles can be used on rear due to no need to change the rear diff
    -front...04 Sti Axle stubs can be ordered along with seals and clips that retains the WRX front Axles, hubs, etc? Special seals are needed. Axle Stub Part Number: 38415AA110
    Circlip Part Number: 805329010 from Wrinkleboi's thread about this***
    -6 speed shifter and assembly****
    -DCCD controller optional**
    -6-speed clutch fork and slave cylinder?
    -5 speed and 6 speed clutch and flywheel"

    "07 USDM Sti 6 speed: into wrx
    -transmission
    -driveshaft
    -6 speed shifter and assembly****
    -6-speed clutch fork and slave cylinder for 2007 sti
    R160 rear diff (02-05 wrx)
    6 speed clutch and flywheel
    Circlips from 2004 sti, oil seals and axle stubs"




    Thanks, I've gathered some parts so far and does the year matter? or is it like most parts where 04-07 all basically work
    and will the R180 work the 07? as that is the rear diff option i am going for
    2007 Impreza WRX
    1991 UCF 10 VIP

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