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Thread: Torsen differential questions (with pics)

  1. #1
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    Urgent Help Needed Torsen differential questions (with pics)

    I just bought a used Torsen differential that is supposedly out of an '02 Camaro. I disassembled it, and I found some wear on the thrust block/paddle and the side gears.

    I decided to buff the worn surfaces down with an 80-grit sandpaper flap-wheel, then I lapped them with some fine valve lapping compound.

    All of the worm gears look fine, as well as the teeth on the side gears, and I'm going to replace the bolts that hold the unit together with new bolts and washers from the Caterpillar dealer.

    Questions:

    1.Do the gears/paddle look okay to use?

    2. How can I tell if the unit is a T1 or a T2? The numbers stamped on the housing are: 9022 01X00901

    About the pictures: First is the unit as I received it, second is the paddle as I received it with the wear, third is the wear on the side gears, and the fourth and fifth pictures are the paddle and side gears after being buffed.
    I'm sorry about the picture quality, I took them with my phone; it's the only camera I've got.

    Thank you.
    Attached Images Attached Images

  2. #2
    moats & toes
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    T1 wasn't made for the GM 10-bolts.
    The stock one is a T2 which differs from the T1 based on gear bias ratio.
    A T2R has clutch packs in addition to the gear bias section.

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