Best/Recommended Spark Plug?

Discussion in 'Lighting and Electrical' started by stuckonreplay, Sep 30, 2012.

  1. ivan H

    ivan H Member

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    Hi, just to clarify, the NGK BP#HS has the same threaded length as the B#HS but is an "extended tip" plug, meaning the electrodes/insulator protrude a bit more, so it places the spark closer to the piston crown, & gives a slight comp increase as a bonus. Does the E3.10 only comes in 1 heat range? Cheers
     
  2. ckangaroo70

    ckangaroo70 Active Member

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    Yes...you will find on this website that there are alot of guys who also use the E3.12 instead of the E3.10. The E3.10 is just a slightly hotter plug then the E3.12, but sometimes a colder plug will work better depending upon time of year and outside temps. I have never tried the E3.12 myself...so I really can't say much about it, but you will find several people on here that use it with good results.
    http://motorbicycling.com/archive/index.php/t-23592.html
    http://motorbicycling.com/archive/index.php/t-14294.html
     
  3. TylerCO

    TylerCO New Member

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    I assume this thread is long dead, but I picked up the E3.10 spark plug from my local Napa auto parts, at least they told me it was the E3.10... Their computer said it was but it doesn't have those numbers anywhere on the box or the plug itself. Anyway, it's super short and barely makes contact with the boot that goes over it. Think I'm gonna go pick up a NGK BP6hs tomorrow. BTW, I am in high altitude in Colorado and am running an NT carb with 66cc flying horse engine.
     
  4. ckangaroo70

    ckangaroo70 Active Member

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    So..did you try the 3.10 plug and what were your results? The BP6h is a good plug as well but not sure it would be better then the 3.10..
    however I have used both. My favorite plug I use now are the ngk bp6hix iridium plugs. They work good and are hard to faul. Actually any of these three plugs mentioned are going to be improvement over stock china plug.
     

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