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Spark Plugs

Discussion in 'XJ Technical Chat' started by gmoncrief, Apr 15, 2010.

  1. gmoncrief

    gmoncrief Member

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    Can anyone respond to the following question regarding NGK plugs.
    I can't remember the numbering system. If you run lower number then standard is the plug hotter or colder?
    Stock plug for the Seca 750 is a BP7ES so if I ran a BP8ES is this hotter or colder???
     
  2. Alchai

    Alchai Member

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