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Disc conversion question on d25

Discussion in 'Early CJ5 and CJ6 Tech' started by clay, Sep 17, 2005.

  1. Sep 17, 2005
    clay

    clay Driving

    Hopkinton, MA
    Joined:
    Aug 14, 2005
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    338
    In the article on this conversion it says to press or pull the new disc onto the hub with old lugs. On mine the disc fits right on the hub with a very little bit of play. Is that tight enough or is somethine wrong?
     
    clay, Sep 17, 2005
    #1
  2. Sep 17, 2005
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,524
    as long as it seats properly against the hub, the wheel will hold it tight.
    I'm assuming the disc is on the outside of the hub.
     
    jpflat2a, Sep 17, 2005
    #2
  3. Sep 17, 2005
    clay

    clay Driving

    Hopkinton, MA
    Joined:
    Aug 14, 2005
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    338
    No the article says the rotor bolts behind the hub. I don't know how to do a link but the article is from the forum it's called converting an early jeep cj tt front disc brakes by Steve lane
     
    clay, Sep 17, 2005
    #3
  4. Sep 17, 2005
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
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    4,275
    You are correct Clay, the rotor bolts up behind the hub. What you need to look for is whether your hubs are machined flat on the back side, or if they have a slight taper to them. I have seen both from the factory, but if yours have the taper you will either have to have them turned on a lathe to make the surface flat, or replace the hubs with ones that are already that way. The replacement hubs from Omix-ADA (sold by all the Jeep parts places) are flat. It is easy to tell what you have to work with, after you separate the hub/drum assemblies you can drop the hub into the disc and you'll see what I mean. If the center of the hub rests on the "hat" of the disc but there is still an air gap around the edge of the hub/disc mating surface, then you have tapered hubs. Make sense?

    Email me at w3srl@yahoo.com if you need further help.

    Steve
     
    w3srl, Sep 17, 2005
    #4
  5. Sep 17, 2005
    clay

    clay Driving

    Hopkinton, MA
    Joined:
    Aug 14, 2005
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    It is flat where the studs come through )photos might help explain
     
    clay, Sep 17, 2005
    #5
  6. Sep 18, 2005
    clay

    clay Driving

    Hopkinton, MA
    Joined:
    Aug 14, 2005
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    338
    new problem with brake conversion

    Now my Brakes don't fit, not enough space between rotor and mounting bracket plate, do I need to cut my rotors they are 1 3/16 and the article talks about 1 1/8 rotors. The spindle goes on first then new muonting plate right? If I went the other way I would have the room but I don't think it would seal properly. HELP
     
    clay, Sep 18, 2005
    #6
  7. Sep 18, 2005
    jason

    jason Member

    worcester mass
    Joined:
    Oct 27, 2002
    Messages:
    58
    hey clay i did the swap on a OD green 57 willys about 3 years back the jeep is in southgrafton MA, i am closing my shop on depot street and moving it to my house but if theres any thing i can help with let me know. the jeep i sold to a guy that lives over by RXR court on 122A maybe you can go over there and take a look, heres my cell number 774-239-2341, jason.
     
    jason, Sep 18, 2005
    #7
  8. Sep 18, 2005
    clay

    clay Driving

    Hopkinton, MA
    Joined:
    Aug 14, 2005
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    Well I did it. sorry about all the questions but it was my first job on the jeep. I'll try to have the stones to problem solve more on the next job. THANKS for everyones help.
     
    clay, Sep 18, 2005
    #8
  9. Sep 18, 2005
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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    Ok, so what was the clearance issue? Inquiring minds want to know..... :D
     
    w3srl, Sep 18, 2005
    #9
  10. Sep 18, 2005
    clay

    clay Driving

    Hopkinton, MA
    Joined:
    Aug 14, 2005
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    It was like a 16th/32nd of an inch the inside pad was hitting the rotor and the caliper would not slide on, so I hit the backing plate with a bfh and everything looks great. Steve I grew up in PGH (Shaler) it's good to see there are still old jeep in them hills.
     
    clay, Sep 18, 2005
    #10
  11. Sep 18, 2005
    jd7

    jd7 Sponsor

    Nacogdoches,Texas
    Joined:
    Mar 30, 2004
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    bfh should come with every Jeep sold.
     
    jd7, Sep 18, 2005
    #11
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