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Thread: Anyone Else Cut Lower Steering Shaft for MKIV with Coyote?

  1. #1
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    Question Anyone Else Cut Lower Steering Shaft for MKIV with Coyote?

    Just wondering if anyone with an MKIV and Coyote has had to cut the lower steering shaft, in order to make sure it sits flush with the inside bore of the u-joint. In my mock fit-up, the closest I can get it leaves about 1/4" proud, but it doesn't look like it will bind with the opposing knuckle as it goes 360° around.

    20211113_124318.jpg

    Thanks,

    32J

  2. #2

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    I've never heard of anyone cutting the steering shaft. Many folks (myself included) have had to mount the footbox pillow bearing on the inside of the footbox rather than the outside as shown on the instructions to have enough room for the shaft to fit properly.

    Edit: Not a great picture, but you can see how I mounted the pillow bearing on the footbox.

    Last edited by JohnK; 11-13-2021 at 08:57 PM.
    MkIV Roadster build: Gen 2 Coyote, IRS, TKO600. Ordered 10/24/18. Delivered 1/29/19. Engine installed 8/8/21. First start 9/12/21. First go-kart 9/17/21. Off to paint 4/11/22. Back from paint 12/30/22. Build thread here.

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  4. #3
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    Great idea, thanks. That may do the trick. I'll give it a try.

    32J

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    2nd for the inside mount. That was how everyone was doing it when I built mine.
    MK4 #8900 - complete kit - Coyote, TKO600, IRS - Delivered 6/28/16 First Start 10/6/16 Go cart - 10/16/16 Build completed - 4/26/17 - 302 days to build my 302 CI Coyote Cobra - Registered and street legal 5/17/17
    Build Thread http://thefactoryfiveforum.com/showt...e-build-thread
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  6. #5
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    Unfortunately the bearing top fange will interfere with the pedal box front mount. I exchanged messages with Dan G. and what I'll do is just split the difference between the two u-joints.

    Thanks,

    32J

  7. #6
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    I had the same issue and mouunted the pillow block bearing inside and outside the firewall ending up on the outside and cut about 1/4" off my lower shaft just as yours shows. Worked out good.

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  9. #7
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    Quote Originally Posted by ggunter View Post
    I had the same issue and mouunted the pillow block bearing inside and outside the firewall ending up on the outside and cut about 1/4" off my lower shaft just as yours shows. Worked out good.
    You can do that but you'll introduce excess slop in the pillow block, which you don't really want. And I really only needed that little bit more represented by getting the 'outside' 1/2 'inside' with the rest of the block.

    It does interfere when placed inside the footbox but that's easily addressed by grinding off the top of the flange which isn't structurally vital.


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    MK4 #7838: IRS 3.55 TrueTrac T5z Dart 347
    The drawing is from ~7th grade, mid-1970s
    Meandering, leisurely build thread is here

  10. #8

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    Agreed - the interference is pretty easily addressed, either from the bearing flange or from the pedal box brace like this. Either way works fine.

    MkIV Roadster build: Gen 2 Coyote, IRS, TKO600. Ordered 10/24/18. Delivered 1/29/19. Engine installed 8/8/21. First start 9/12/21. First go-kart 9/17/21. Off to paint 4/11/22. Back from paint 12/30/22. Build thread here.

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