R180 ring and pinion
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This is a discussion on R180 ring and pinion within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; alright i need some help here, i have a R180 rear diff from a 2000 wrx sti. the gearing is ...

  1. #1
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    Mar 2013

    R180 ring and pinion

    alright i need some help here, i have a R180 rear diff from a 2000 wrx sti. the gearing is 4.44 which is way to low for me. i want to know is it possible to take the ring and pinion out of a 2004 R180 wrx sti which is 3.90 gearing and bolt it in my 2000 R180???

    this is not goin in a subaru! or any other car that will have all wheel drive, only the rear end!

    thank you or your help

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  3. #2
    Super Moderator (Actually a SuperSpy) SD_GR's Avatar
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    Jul 2002
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    Bump for an interesting question. I don't know for sure but from memory the housings are the same externally, implying "yes." Again, I'm uncertain -- because I'd opt to use the entire diff rather than change out the ring/pinion if possible.

    Bump anyone?
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  4. #3
    zax is offline
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    I believe this should be possible. Hell the ring and pinion from an R180 can even be installed in an R160 (same housing). I see no reason why a ring and pinion out of an R180 can't be compatible with another R180. I would contact AndrewTech or another transmission builder for confirmation.

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