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Thread: Spark Plug question

  1. 10-11-2010, 07:47 PM #1
    gcdpetaluma
    gcdpetaluma is offline
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    Spark Plug question

    I have a 1966 stock 911. Can you recommend plugs for city driving conditions? Are temperature ranges a consideration? Thank you!
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  2. 10-11-2010, 08:52 PM #2
    emnemn
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    I can't remember the heat range I use. But I can tell you that I've tried a lot of different plugs and the one that works best is Bosch Copper..
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  3. 10-11-2010, 11:21 PM #3
    Steve@Rennsport
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    WR-5DC's work fine if you have retrofitted a CD ignition system. With the stock Kettering system, I'd use something warmer such as WR-6DC to keep them clean.
    Steve Weiner
    Rennsport Systems
    Portland Oregon
    503.244.0990
    E-mail: porsche@rennsportsystems.com
    http://www.rennsportsystems.com
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