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Sparkplug socket size

Discussion in 'XJ Technical Chat' started by mikeg, Apr 17, 2009.

  1. mikeg

    mikeg Member

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    What size socket do I need for the sparkplugs on an '82 750 Maxim? My socket set came with a 5/8" plug socket but that's too small. It's a bit bigger than a 3/4" wrench I have. I didn't see anything about size in the user's manual.

    Anyone?

    thanks,
    mikeg
     
    mikeg, Apr 17, 2009
    #1
  2. SLKid

    SLKid Active Member

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    Metric Buddy Metric. I think its a 14mm socket with an extender that;ll work.
     
    SLKid, Apr 17, 2009
    #2
  3. mikeg

    mikeg Member

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    Ok, I knew that all of the bolts and allen nuts were metric, didn't realize that the spark plugs were.

    thanks,
    mikeg
     
    mikeg, Apr 17, 2009
    #3
  4. stereomind

    stereomind Active Member

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    SAE variety would be 13/16" for the stock NGK's
     
    stereomind, Apr 17, 2009
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  5. Robert

    Robert Active Member

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    Confirm 13/16" spark plug wrench for 82 750 Seca. Buy a nice one, not the $1 POS.
     
    Robert, Apr 17, 2009
    #5
  6. mikeg

    mikeg Member

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    I went to Sears at lunch and picked up a Craftsman 13/16 spark plug socket. I checked it against a plug and it fit.

    mkieg
     
    mikeg, Apr 17, 2009
    #6
  7. Robert

    Robert Active Member

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    A daub of anti-seize on the threads, torque to 11-14 ft/lbs and you are set. Ensure they are BP7ES NGKs gapped at 0.028-0.032".
     
    Robert, Apr 17, 2009
    #7
  8. ryevans21

    ryevans21 Member

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    definitly 13/16", its not metric (measured them with a caliper and got 20.6mm); I had bought a 14mm plug socket but the 14mm refers to thread diameter (not socket size)
     
    ryevans21, Nov 5, 2012
    #8
  9. ryevans21

    ryevans21 Member

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    but, Im guessing (since its been 3 years since the last action on this thread) that my input was unnecessary - oops!
     
    ryevans21, Nov 5, 2012
    #9

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