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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. Mar 29, 2018
    mickeykelley

    mickeykelley Well-Known Member

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    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. Apr 3, 2018
    mickeykelley

    mickeykelley Well-Known Member

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

    oldtime oldtime

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

    Glenn Kinda grumpy old man Staff Member

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

    mickeykelley Well-Known Member

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    Glad to know I'm not the only one that forgets crap. Now what was I doing?
     
    mickeykelley, Apr 3, 2018
    #5
  6. Apr 4, 2018
    Glenn

    Glenn Kinda grumpy old man Staff Member

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    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. Apr 4, 2018
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

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

    Glenn Kinda grumpy old man Staff Member

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    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. Apr 4, 2018
    PeteL

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

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    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. Apr 4, 2018
    Glenn

    Glenn Kinda grumpy old man Staff Member

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

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

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

    mickeykelley Well-Known Member

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    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. Apr 4, 2018
    Glenn

    Glenn Kinda grumpy old man Staff Member

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

    Glenn Kinda grumpy old man Staff Member

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

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

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

    Glenn Kinda grumpy old man Staff Member

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    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. Apr 4, 2018
    PeteL

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

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    Might take me a day or two. My Jeeps are scattered all over.
     
    PeteL, Apr 4, 2018
    #17
    Glenn likes this.
  18. Apr 6, 2018
    ojgrsoi

    ojgrsoi Retired 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    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. Apr 6, 2018
    ojgrsoi

    ojgrsoi Retired 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    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. Apr 6, 2018
    Glenn

    Glenn Kinda grumpy old man Staff Member

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