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What Does This Stamping On The Head Mean?

Discussion in 'Early CJ5 and CJ6 Tech' started by mickeykelley, Mar 29, 2018.

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  1. mickeykelley

    mickeykelley Well-Known Member

    image.jpg Any idea what this stamping means. It's on the rear passenger side of the F134 head?
     
    mickeykelley, Mar 29, 2018
    #1
  2. mickeykelley

    mickeykelley Well-Known Member

    No ideas?
     
    mickeykelley, Apr 3, 2018
    #2
  3. oldtime

    oldtime oldtime

    i will take a guess that its merely the machinists stamp.
     
    oldtime, Apr 3, 2018
    #3
  4. Glenn

    Glenn Kinda grumpy old man Staff Member

    I keep forgetting to see if mine has that stamping.
     
    Glenn, Apr 3, 2018
    #4
  5. mickeykelley

    mickeykelley Well-Known Member

    Glad to know I'm not the only one that forgets crap. Now what was I doing?
     
    mickeykelley, Apr 3, 2018
    #5
  6. Glenn

    Glenn Kinda grumpy old man Staff Member

    Mine has the same stamp. Maybe a designation for the type of head? Regular, and a different designation for high altitude?

    Edit: just throwing that thought out as an example, not suggesting that is the answer.
     
    Last edited: Apr 4, 2018
    Glenn, Apr 4, 2018
    #6
  7. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Is it 086 or 980? not that it matters
     
    FinoCJ, Apr 4, 2018
    #7
  8. Glenn

    Glenn Kinda grumpy old man Staff Member

    The assumption is that the stamping was done from the outside of the head facing towards it. For example the serial number at the front of the block is clearly done from the front of the block facing towards it.

    For clarification the numbers in question are on the passenger side just to the left of the carburetor.
     
    Glenn, Apr 4, 2018
    #8
  9. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Could they be a Job ID number in the machine shop?

    (I once received back a head that was not the one I took in…)
     
    PeteL, Apr 4, 2018
    #9
  10. Glenn

    Glenn Kinda grumpy old man Staff Member

    Both his and mine have that number.
     
    Glenn, Apr 4, 2018
    #10
  11. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    I missed that. Must be factory then.
     
    PeteL, Apr 4, 2018
    #11
  12. mickeykelley

    mickeykelley Well-Known Member

    I think Glenn pulled a fast one and got my head by mistake, but fortunately I got even and got his. :D
     
    mickeykelley, Apr 4, 2018
    #12
    Glenn likes this.
  13. Glenn

    Glenn Kinda grumpy old man Staff Member

    :lol:
     
    Glenn, Apr 4, 2018
    #13
  14. Glenn

    Glenn Kinda grumpy old man Staff Member

    Have you got a civilian block or an MD block?
     
    Glenn, Apr 4, 2018
    #14
  15. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Right now three civilian, one MD military.
     
    PeteL, Apr 4, 2018
    #15
  16. Glenn

    Glenn Kinda grumpy old man Staff Member

    It would be interesting to see if yours have that stamping. Is MD part of the serial number? Is there anything on the head that identifies it as military?
     
    Glenn, Apr 4, 2018
    #16
  17. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Might take me a day or two. My Jeeps are scattered all over.
     
    PeteL, Apr 4, 2018
    #17
    Glenn likes this.
  18. ojgrsoi

    ojgrsoi Retired 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Mine has a stamp of 67. Since you can't reverse the seven I would vote for 086.

    [​IMG]

    This doesn't appear to be in the same place as the OP number and is a different shape surface. But I found it on the curb side rear of the head.
     
    Last edited: Apr 6, 2018
    ojgrsoi, Apr 6, 2018
    #18
  19. ojgrsoi

    ojgrsoi Retired 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Ok. I reread the posts. I have the wrong location.:oops: No stamping by the carb on mine.

    [​IMG]

    [​IMG]
     
    ojgrsoi, Apr 6, 2018
    #19
  20. Glenn

    Glenn Kinda grumpy old man Staff Member

    That's interesting. Thanks for the reply. :)
     
    Glenn, Apr 6, 2018
    #20
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