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when was the brake changeover(9 to 10)

Discussion in 'Early CJ5 and CJ6 Tech' started by all4jpn, Apr 30, 2010.

  1. Apr 30, 2010
    all4jpn

    all4jpn Member

    fredericksburg,va
    Joined:
    Dec 16, 2006
    Messages:
    363
    I punched in 63 cj5 (i have one) in napa and it came back with 9 and 10 inch drums....what year did they cease 9" drums....did the dj's stop then also?
     
    all4jpn, Apr 30, 2010
    #1
  2. Apr 30, 2010
    all4jpn

    all4jpn Member

    fredericksburg,va
    Joined:
    Dec 16, 2006
    Messages:
    363
    you guys are usually so fast with the answer......
     
    all4jpn, Apr 30, 2010
    #2
  3. May 2, 2010
    mortten

    mortten I can’t put my finger on it 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Peninsula, Ohio
    Joined:
    Apr 17, 2006
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    1,740
    My 1968 FSM says early models had 9" and late models had 10". No dates. I think dual master cylinders were mandated in 1967 so that may be a turning point. Manual says DJ's only had 9" brakes.
     
    mortten, May 2, 2010
    #3
  4. May 2, 2010
    all4jpn

    all4jpn Member

    fredericksburg,va
    Joined:
    Dec 16, 2006
    Messages:
    363
    the spare 66 front axle i got had 10"......
     
    all4jpn, May 2, 2010
    #4
  5. May 2, 2010
    billybbean

    billybbean Member

    Kemmerer, Wyoming
    Joined:
    Apr 29, 2010
    Messages:
    55
    I have a 63 also with 10" brakes front and rear. I recently had an issue buying brake pads and wheel cyls at napa. I had better luck at carquest. Just an fyi.
     
    billybbean, May 2, 2010
    #5
  6. May 2, 2010
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Sep 22, 2002
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    8,360
    Dual M/C came in '68. All the V6 CJ's had 10", so '66-'71. Not sure about the F head.
     
    Patrick, May 2, 2010
    #6
  7. May 2, 2010
    blazer

    blazer Member

    arkansas
    Joined:
    Feb 8, 2007
    Messages:
    56
    my 1966 cj6a has 10 in,i didnt know if it was because it had v6 or because it was a tuxpark,doesnt all of the mark iv have 10 in
     
    blazer, May 2, 2010
    #7
  8. May 2, 2010
    BajaEdition

    BajaEdition cj6 owner

    Riverside CA
    Joined:
    Feb 16, 2009
    Messages:
    194
    the guy at the Jeep shop around here say that all v6 jeeps came with 10 inch brakes, so a 66 with 10 inch would not be unusual. I think though the 4 poppers still had9 inch.
    I cannot answer this, I have several books on CJs but the brake upgrade seems to be a grey area
     
    BajaEdition, May 2, 2010
    #8
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