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rotor thickness

Discussion in 'Intermediate CJ-5/6/7/8' started by Rich M., Feb 22, 2016.

  1. Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Anyone know the minimum rotor thickness for 76-78 big brake rotor? Thanks!
     
    Rich M., Feb 22, 2016
    #1
  2. 47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    It should be stamped into the outside edge of the rotor.
     
    47v6, Feb 23, 2016
    #2
  3. Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Savvy. I'll clean off the rust....
     
    Rich M., Feb 23, 2016
    #3
  4. nickmil

    nickmil In mothballs.

    1.120" minimum refinish thickness, 1.119" discard thickness. Maximum lateral runout .005", maximum parallelism .005".
     
    nickmil, Feb 23, 2016
    #4
  5. Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Well they measured 1.149 my guy thought it was a gamble if they would turn with the amount of rust on them. Rock auto here I come! _(again...)
     
    Rich M., Feb 25, 2016
    #5
  6. SFaulken

    SFaulken Active Member

    1.149"? That seems odd. Because as far as I know, brand new, they're 1.125" thick....
     
    SFaulken, Feb 25, 2016
    #6
  7. Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    These are the 76-78 " big brake" rotors. Later ones are thinner.
     
    Rich M., Feb 25, 2016
    #7
  8. SFaulken

    SFaulken Active Member

    Aye. I know. I have them on my '70 after converting it. Looks like calling them 1 1/8" thick is just a "nomenclature" thing. I just checked mine and they're actually closer to 1.170 or so.
     
    SFaulken, Feb 25, 2016
    #8