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BR8ES spark plug gap

in General Tech Discussion 12 years ago
Good morning everyone and Happy Easter!

The gap specification for the BR8ES spark plug is .020".

I just bought 8 of them and they all have a .029" gap.

I have not yet checked my old spark plugs, but is that normal for new ones? Should I change it to the correct gap? Is there a correct method to do that?

Thanks, all.

Mike

  • Re: BR8ES spark plug gap

    by » 12 years ago

    Hi Mike,

    Plugs out of the box many times have gaps right around .029. Most of the time we do need to change the gap. The proper gap is very important so make sure you do this. You just need to bend the the electrode tip and use a clean feeler gauge to make sure they are all equal at .020 or whatever gap you need.

    gapping tools:

    http://www.thefind.com/cars/info-spark-plug-gap-tool

    http://www.amazon.com/s/?ie=UTF8&keywords=spark+plug+gapping+tool&tag=mh0b-20&index=aps&hvadid=2277641973&ref=pd_sl_jkmc86dnq_e


    Most automotive stores will have these too.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

      
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  • Re: BR8ES spark plug gap

    by » 12 years ago

    Is there a preferred way to bend the tip without breaking it? Needle nose pliers?
      
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  • Re: BR8ES spark plug gap

    by » 12 years ago

    The tools that are displayed in my previous post have ends on the tool to bend the electrode tip.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

      
    Report

  • Re: BR8ES spark plug gap

    by » 12 years ago

    Hey Roger. I understand that there are tools to measure the gap. My question was about how to change the gap.
      
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  • Re: BR8ES spark plug gap

    by » 12 years ago

    Mike,

    Your local auto supply store can sell you a set of feeler gauges for five bucks. Each leaf of the gauge is a different thickness and you just use the leaf or combination of leaves that give you the proper thickness. They can also sell you a round spark plug gauge for a buck but it does'nt offer the wide range of thicknesses a feeler gauge does.

    As for the actual bending, some feeler gauges have a bending tool built in. I just pick the proper gauge leaf or leaves, slide them in the gap, and tap the electrode down with the plastic handle of a screwdriver until the gauge is snug. Once the adjusting is done, the gauge should slide in and out of the gap freely but with no loose play.

    Bill.
      
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