2005 wrx sti transmission questions
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This is a discussion on 2005 wrx sti transmission questions within the Transmission & AWD forums, part of the Tech & Modifying & General Repairs category; i recently bought a 05 wrx with an sti swap with a blown transmission. i was wondering how much a ...

  1. #1
    vor
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    2005 wrx sti transmission questions

    i recently bought a 05 wrx with an sti swap with a blown transmission. i was wondering how much a transmission for an sti will cost. also wondering what years are compatible with 2005. if anyone can answer any of my questions it would be appreciated

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    Registered User wreckingball man's Avatar
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    On average, just the transmission itself would be like 3-4k. Obviously that's just an avg price, there's deals to be had on the various forums like iwsti, here, nasioc, etc. Clutch kit will be around 300 for a stock replacement.

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    vor
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    I started to take apart the transmission and i think that i can rebuild it if i find the parts, but the transmission is a stock wrx transmission. can i run an sti engine off the wrx transmission or do i need to buy a new sti transmission to handle the torque?

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    Registered User UEDan's Avatar
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    Thats up to you.
    As you saw, the STi motor killed the WRX Transmission. A stock WRX motor can also kills a WRX transmission if you dump the clutch a few times too many.

    Depends on what you want to do with the car, are you planning on doing a lot of hard launches? Is it a daily driver?

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    vor
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    It would be my daily driver just want the extra power there in case i want to have some fun. I will drive it like i stole it every now and then. Just wanted to save some money with the wrx transmission since i put a lot into the motor.

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    yes you can mate every transmission up to a subaru engine. doesnt matter if its a 2.0 or 2.5. the foresters, legacy, wrx, sti all use the same bellhousing.

    they all have diffrent types of slave cylinders and clutch forks but they will all bolt up to the existing spot and mate to any motor.. thats why so many people do swaps.

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    vor
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    thanks for all the info guys, it is greatly appreciated. only have 1 last question, is there anything else i have to swap out other than the wiring harness for the sti engine? or should that be fine

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    Registered User wreckingball man's Avatar
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    Quote Originally Posted by jkimb01c View Post
    yes you can mate every transmission up to a subaru engine. doesnt matter if its a 2.0 or 2.5. the foresters, legacy, wrx, sti all use the same bellhousing.

    they all have diffrent types of slave cylinders and clutch forks but they will all bolt up to the existing spot and mate to any motor.. thats why so many people do swaps.
    Just FYI, most of them all have different Final Drive ratios and gear ratios too. That would be important to know. Also the clutch type varies among models. So yes, you may need to replace clutch systems.

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