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Thread: Mk4 IRS w/Gen3 Coyote/TKX Pinion Angle

  1. #1
    Senior Member Junbug's Avatar
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    Mk4 IRS w/Gen3 Coyote/TKX Pinion Angle

    Looking for a verification that my Pinion angle is good/acceptable. As the title says, I’ve got a Mk4, with a Gen3 Coyote mated with a TKX, three 1/4” spacers between the transmission and the FFR trans mount and an IRS. Below are my angle measurements, which I believe are well within the range they should be. I have a digital angle finder that I zeroed on the DS 4” frame tube and made the other measurements with.
    Transmission is: -1-3
    Drive shaft is: 0.0 (level)
    IRS is: +0.6

    My beer math says that’s within 2 degrees, so acceptable.

    Any differing opinions? I know there is a lot of guidance out there in this site, which I’ve read and re-read.
    Thanks,
    -Bryan
    -Bryan
    Mk4 Roadster w/ IRS, Forte Gen 3 Coyote/TKX, Wilwood Brakes
    Build thread https://thefactoryfiveforum.com/show...oyote-TKX-EFI)
    Ordered: 6/27/22, Delivered: 1/20/23, First Start 10/16/2023, Go-Cart 3/30/2024

  2. #2
    Senior Member edwardb's Avatar
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    My 20th Anniversary Roadster with the same setup (TKO vs TKX, same difference) measured nearly the with a 3/4-inch spacer under transmission mount. 6,000+ miles later when I sold it, still working perfectly. You're good.
    Build 1: Mk3 Roadster #5125. Sold 11/08/2014. Build 2: Mk4 Roadster #7750. Sold 04/10/2017. Build Thread
    Build 3: Mk4 Roadster 20th Anniversary #8674. Sold 09/07/2020. Build Thread and Video. Build 4: Gen 3 Type 65 Coupe #59. Gen 3 Coyote. Legal 03/04/2020. Build Thread and Video
    Build 5: 35 Hot Rod Truck #138. LS3 and 4L65E auto. Rcvd 01/05/2021. Legal 04/20/2023. Build Thread. Sold 11/9/2023.

  3. #3
    Senior Member Junbug's Avatar
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    Quote Originally Posted by edwardb View Post
    My 20th Anniversary Roadster with the same setup (TKO vs TKX, same difference) measured nearly the with a 3/4-inch spacer under transmission mount. 6,000+ miles later when I sold it, still working perfectly. You're good.
    Thanks Paul!
    -Bryan
    Mk4 Roadster w/ IRS, Forte Gen 3 Coyote/TKX, Wilwood Brakes
    Build thread https://thefactoryfiveforum.com/show...oyote-TKX-EFI)
    Ordered: 6/27/22, Delivered: 1/20/23, First Start 10/16/2023, Go-Cart 3/30/2024

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