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Thread: Cheap 6.7" Torsen -- Better than OBX

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  1. #1
    Join Date
    Nov 2004
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    Cheap 6.7" Torsen -- Better than OBX

    I've done some research into this, and I've discovered that the ST185, ST205, and SXA10 all use a 6.7" rear differential, and all have optional Torsens.

    Now, the ST205 didn't come here, so that's a bit harder to find, the ST185 is still pretty rare, but might be able to find one from it. The SXA10 is of course the 1st generation RAV4.

    So we'll see how it goes, but right now I'm thinking that I may try and get one for my black car. My plan had been for a long time to wait for the 4A-GZE when I put in a Supra rear end and get a Truetrac diff, but I might as well try to find one of these Torsens in the mean time IMO.

    Just thought I'd share that.

    2011 GSE20 Lexus IS350 6MT F-Sport with LSD
    2005 NCP13 Toyota Yaris RS 5MT Hatchback
    1993 TCR10 Team Mondor Toyota Previa GT-S RM 5MT Studded Ice Race Van
    1986 AE86 Toyota Corolla GT-S 5MT Supercharged

  2. #2
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    Jeff Lange is the man
    1987 Corolla GTS Hatch | 1985 Corolla GTS Coupe | 1987 Corolla GTS Coupe | 1992 Tercel CE | 1992 Paseo | 2003 Corolla CE | 1974 Corolla 4 Door | 1978 Corolla Coupe | 1979 Corolla Hatch SR5 | <3||||||1990 Miata |||||| <3
    I like Toyota's wanna fight about it?

  3. #3
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    Location
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    Mr, Lange,
    I for one am very interested in your findings on this! pretty cool indeed, same modifications required as the supra rear end I would assume?
    I will be watching this thread for progress, great idea BTW
    Cheers,

  4. #4
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    Nah, I'm just talking about the diff case. Using it in the AE86 GT-S rear end.

    It would only work with kouki axles, and I'm not sure if they'd have to be shortened.

    2011 GSE20 Lexus IS350 6MT F-Sport with LSD
    2005 NCP13 Toyota Yaris RS 5MT Hatchback
    1993 TCR10 Team Mondor Toyota Previa GT-S RM 5MT Studded Ice Race Van
    1986 AE86 Toyota Corolla GT-S 5MT Supercharged

  5. #5
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    Nov 2005
    Location
    Edmonton AB
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    344
    ah-ha, so I will still have to find myself an 86-up rear end...(I have only the zenki rearend) drat, even still this is a very cool find.

  6. #6
    Join Date
    Dec 2005
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    I actually got a quote of $840 for a True Trac for the MKI Supra rear end from the Gear Centre. If they are actually that much there is no way in hell I would buy one.
    Matt H.

  7. #7
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    Nov 2004
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    Edmonton, Alberta
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    $840? Cdn I hope at least.

    They're usually about $350 USD.

    Either way, I don't see why $840 is so outrageous considering what all the other LSDs sell for.

    2011 GSE20 Lexus IS350 6MT F-Sport with LSD
    2005 NCP13 Toyota Yaris RS 5MT Hatchback
    1993 TCR10 Team Mondor Toyota Previa GT-S RM 5MT Studded Ice Race Van
    1986 AE86 Toyota Corolla GT-S 5MT Supercharged

  8. #8
    Join Date
    Nov 2004
    Location
    Edmonton, Alberta
    Posts
    5,287
    So here's an update on this, I've had a TRD 2-way in my car for the better part of a decade, and have put almost no mileage on it, but I've also had the latest version of this Toyota T2 Torsen kicking around in the garage for a few years now as well. I still want to put it in the car, but I have confirmed that it uses 27-spline 28mm axles (same size as the Toyota 7.5" diffs) versus the 23-spline 24 or 25'ish mm spline shafts of the AE86 and other non-Torsen Toyota 6.7's.

    Weir makes 28mm spline shafts, and the MA46/47 axle shafts are the correct spline, correct bolt pattern, and correct bearing/seal, but since the 7.5" is a larger diff, they may end up being a bit short (or not, depending on design). The A40 axle is about 15mm wider than the AE86.

    Not sure if Weir's 28mm splines will match the Toyota 28mm splines (haven't heard back from them via email or phone). Weir also sells A40 4140 axles, which will have the right spline, but again may or may not have the right length.

    Does anyone know the length of the A40 Supra axles?

    Jeff

    2011 GSE20 Lexus IS350 6MT F-Sport with LSD
    2005 NCP13 Toyota Yaris RS 5MT Hatchback
    1993 TCR10 Team Mondor Toyota Previa GT-S RM 5MT Studded Ice Race Van
    1986 AE86 Toyota Corolla GT-S 5MT Supercharged

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