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Thread: Spark plug refence and how to read them

  1. #1
    Veteran biggo's Avatar
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    Default Spark plug refence and how to read them


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    20v plugs are BKR6EYA11

    16v Bigport is BCPR5/6E .8 i think
    Smallport is the same cept with 1.1mm gap.

    Its been awhile so i may have them mixed up?

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    Yeah you have them mixed up.

    16v Bigport is:
    BCPR5E-11
    BCPR6E-11

    Smallport is:
    BCPR5E-8
    BCPR6E-8

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    cheers for that bro

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    No probs, I still dunno why they changed them.

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    So if im running a bigport with heaps more comp (shaved head/block and thinner HG) would it be better to run the smallport plugs?

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    The race cars at work run 1.1 plugs and they are extensively worked.

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    wow, have always wondered what those letters and numbers mean

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    I always knew how to read them for motorbikes, but never knew what the extra bits were for cars, cheers
    wheelfriends.wordpress.com

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    are these numbers the same across diff brands?

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    Veteran biggo's Avatar
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    no, NGK are the most popular. But you can cross referance other brands with the ngk book.
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