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  1. #1

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    Dec 2006
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    spark plug gap??

    I hear that if you change the gap in your plugs on a GPR, you will be able to gain somewhere around like 20 rpm. If any one knows if this is true, please post, and letm me know what they need to be set to. Thanks.


  2. #2
    I think you're talking about indexing the spark plugs

  3. #3
    mrbtd's Avatar
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    Jul 2005
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    Lindenhurst, Illinois, United States
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    j gap and indexing will get you a few rpm's.

  4. #4
    African-American
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    Here is the topic where its all discussed in detail.

    Includes how-to's

    http://greenhulk.net/forums/showthread.php?t=9496

  5. #5

    Join Date
    Dec 2006
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    Alsip, Il
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    thanks alot everyone

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