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Thread: 1967 GE spark plugs

  1. #1

    Default 1967 GE spark plugs

    Any advice of what spark plug to use in a 67 GE motor? Thanks Dave

  2. #2
    Join Date
    Jul 2006
    Location
    Central Florida
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    845

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    If it's an 18mm plughole, start with a Champion D-16 or equivalent. Won't hurt it at all.

  3. #3
    Join Date
    Aug 2004
    Location
    Beautiful Northern New Mexico
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    Standard H-D plug was a 3-4. The equivalent is a Champion J12Y. The standard iron heads on a '67 are 14mm, unless they have been changed to earlier aluminum heads which are 18mm size. #2 H-D were used on city traffic engines to prevent fouling on continued low speed use.
    Robbie Knight Amca #2736

  4. #4

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    The threads are 14mm. so I will go with the 3-4 H-D plugs thanks for the help.

  5. #5
    Join Date
    Aug 2004
    Location
    Beautiful Northern New Mexico
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    2,192

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    Pan620,
    Make sure you use the short reach plugs. H-D also sold a long reach 3-4 which will not work in your GE.
    Robbie Knight Amca #2736

  6. #6
    Join Date
    Jul 2002
    Location
    North Hills, CA and Pine Grove, CA
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    5,048

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    Champion UJ12Y work well in my Servi-car.
    Be sure to visit;
    http://www.vintageamericanmotorcycles.com/main.php
    Be sure to register at the site so you can see large images.
    Also be sure to visit http://www.caimag.com/forum/

  7. #7
    Join Date
    Sep 2017
    Posts
    2

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    Just acquired a '66 GE police trike.
    Its spark plugs are marked Champion J16C.
    Good to use?
    What spark plug would be recommended for occasional short distance riding?
    Thank you.

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