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Geo Tracker/Suzuki Sidekick Disc Brake Solution For Early CJ5's

Discussion in 'Early CJ-5 and CJ-6 Tech' started by tarry99, Mar 23, 2018.

  1. Apr 2, 2019
    Norcal69

    Norcal69 Resident Taco Maker 2019 Sponsor

    Cottonwood, Ca
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    Just get thin top lock nuts.
     
  2. Apr 20, 2019
    jeepstar

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    Sheboygan
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    Just to update for the people doing this, you will absolutely need a hub puller, and a 39/64" drill bit to open the mounting holes in the rotors.
     
  3. Apr 20, 2019
    william_cj3b

    william_cj3b 3BOB driver Sponsor 2019 Sponsor

    Milton, FL
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    X2 on the hub puller for the rear!

    You're upgrading from 10" brakes? Are your wheel studs larger at the hub?
     
  4. Apr 21, 2019
    william_cj3b

    william_cj3b 3BOB driver Sponsor 2019 Sponsor

    Milton, FL
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    So I did a mockup on a parts jeep today. I wanted to see if the vented rotor setup from a 4-door Tracker would work with stock wheels. I left the pads out and pushed the caliper all the way towards the wheel. There's no interference with a 16" wheel or the steering knuckle. Note - the wheel I used is a welded 16" 'creased disc' type. I plan to look at how much interference there is with the 15x4.5 and 15x5.5 wheels.

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
    OldAdobe likes this.
  5. Apr 21, 2019
    william_cj3b

    william_cj3b 3BOB driver Sponsor 2019 Sponsor

    Milton, FL
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    A comparison of the 2-dr and 4-dr Suzuki brakes...

    The 2-dr rotor (top) is ~3mm larger diameter.
    [​IMG]

    The 4-dr pads have a slightly larger contact area.
    [​IMG]

    The 4-dr calipers have larger pistons.
    4-dr = 2.100"
    2-dr = 1.887"
    [​IMG]

    I plan to use the vented rotors up front and the solid rotors on the rear.
     
    47v6 and ITLKSEZ like this.
  6. Apr 21, 2019
    jeepstar

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    Sheboygan
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    Stock 9" drums.
    I think either the studs are a fuzz larger or the geo disk mounting holes dont quite line up with old jeep stuff. Its sooo close.
     
  7. Apr 21, 2019
    mickeykelley

    mickeykelley Active Member

    Republic of Texas
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    My Geo rotors slipped right on. Did not have to drill out.
     
  8. Apr 21, 2019
    jeepstar

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    Am I wrong thinking that there should be more holding the rotor to the hub than the wheel lugnuts?
     
  9. Apr 21, 2019
    william_cj3b

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    Milton, FL
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    Yes and no. The wheel lugs are what actually hold the disc in place but, the Suzuki discs are drilled and counterbored for retaining screws just like the 9" drums. You could drill and tap your hubs if you like.
     
  10. Apr 22, 2019
    Oldriginal86

    Oldriginal86 Member

    Pasadena, Md.
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    Your not going anywhere without wheels so no need for anything BUT the lugnuts.
     
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  11. Apr 23, 2019
    jeepstar

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    Sheboygan
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    ill post a pic of my rotor on the hub pre drilled out. its close, but not going on w/out drilling. it is the same on all 4 corners.
     
  12. Apr 23, 2019
    mickeykelley

    mickeykelley Active Member

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    It's been a year so maybe I've forgot something, but I don't remember having to. If I had to drill them out, I'm sure I would have mentioned it here My Geo Tracker Disc Conversion Experience
     
    Last edited: Apr 23, 2019
  13. Apr 23, 2019
    william_cj3b

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    Milton, FL
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    I'd like to see you setup. The vented discs slipped right onto the hubs in the mockup I did (early 5 w/ D25).
     
  14. Apr 23, 2019
    jeepstar

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    Sheboygan
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    So very close... Resized_20190423_155109.jpeg
     
  15. Apr 23, 2019
    jeepstar

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    Sheboygan
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    Does this hump thingy stay with the new brake system?
    Resized_20190423_160808.jpeg
     
  16. Apr 23, 2019
    tarry99

    tarry99 Member Sponsor

    Northern California
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    still using the old tapered axles? then Yes..
     
  17. Apr 23, 2019
    jeepstar

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    Sheboygan
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    Yup, figured it's the oil drain thingy...
     
  18. Apr 23, 2019
    tarry99

    tarry99 Member Sponsor

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    From page #1 Notes:
    -The holes in the rotors for the wheel studs need drilled out to .609 with a
    39/64 drill bit. A good hand drill typically works fine. I have heard of the register being
    up to .614" in some cases
     
    Focker likes this.
  19. Apr 23, 2019
    jeepstar

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    Yup. Some people get lucky and dont have to drill. I did though.
     
  20. Apr 23, 2019
    william_cj3b

    william_cj3b 3BOB driver Sponsor 2019 Sponsor

    Milton, FL
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    So your wheel studs are larger than 1/2"-20 thread? Or are they just larger at the knurled end and keeping the discs from sitting flat on the hubs?
     

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