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  1. #1
    Join Date
    Nov 2017
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    Albera
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    Diff swap questions

    So here's the deal I'm looking to put a lsd in my 1999 spec-s. From my resurch I believe it currently has a open diff system. So my question is will I have to change the whole diff housing or can I still just drop in the gear box and go?

  2. #2
    Join Date
    May 2014
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    Stoke-on-Trent
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    Can't answer your question on that sorry but I've got a spec r lsd in my garage (no housing) if you'd be interested in that?

    Leo


    Sent from my iPhone using Tapatalk

  3. #3
    Join Date
    Nov 2017
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    Albera
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    Well if it's not going to fit I wouldn't be interested...

  4. #4
    Join Date
    Feb 2007
    Location
    Co.Wicklow Ireland
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    you can just drop the diff center into the spec s. just unbolt the the gear ring from the diff center and bolt it to the new diff center drop it back in and away you go. I would keep the spec s diff as it is a 4.1 ratio. I put a spec s diff in my spec r but i swapped the centers so that i got rid of the open diff as they are ****.
    Chief Wiggum: "This is Papa Bear. Put out an APB for a male suspect, driving a... car of some sort, heading in the direction of, uh, you know, that place that sells chili. Suspect is hatless. Repeat, hatless."

  5. #5
    Join Date
    Nov 2017
    Location
    Albera
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    Thank you sniffy that's exactly what I was looking for! You wouldn't believe how little info there is out there about this topic it's some what suprising

  6. #6
    Join Date
    Dec 2008
    Location
    Huddersfield
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    I made up my diff from the S15 housing (to keep the abs sensor), an R33 Auto 4.36:1 Crown and pinion gear with viscous diff, and R33 stub shafts (leading to R33 drive shafts)

    Just remember the shims are selected on assembly so try to remember what order they went. You may need to play around with different shim sizes.

    Not a difficult task, but just make sure it all spins freely and doesn't sound like its grinding. I found a set of digital callipers useful for checking measurements.

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