Plasma Plug Setup

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Uploaded by on May 19, 2008

This is how to remove the top on a Champion 8339 plug and remove the resistor inside and replace with a piece of wire to use in plasma/water experiments.

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Uploader Comments (mdbreedi)

  • I tried a Bosch Platium and had the same luck as you did, broke shaft. The champion plugs have worked out the best for me.

  • I hacked and chiped away the plugs in order to find how long the core piece is. That is the piece one is aiming to remove through heating and unscrewing, in order to remove the resistor.

    After watching your video again, i noticed

    your core piece was multiple times shorter than in the 2 plugs tried so far. So it looks like the longer the core piece is, the weaker it is, and more chance of breaking.

    When i can, i hope to get some used plugs from a mechanic.

    I will share my findings here.

  • Try to find a Champion Plug like this or a plug out of a lawnmower, motorbike, something like that. Every one I tried with these numbers will screw off. Bosh, NGK plugs have a long post and will break. Broke sever of those plugs before I found these sport plugs from Champion.

  • how much voltage do you think you need.

  • WIth my setup it starts to plasma around 180VDC.

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  • @mdbreedi

    I am still having trouble getting the resistor out. I was able to get the spring out. do you have any direction for me. I am using a champion spark plug.

  • h ttp:/ /ww w.steal th316.co m/2-sp arkplug tech. ht m

  • how can i know if my spark plug have a resistor or not?

  • I believe the resistor is there for the temperature rating of the spark. ALL the sparkplugs are the same, expect for two thigns: the thread legth or type and the temperature. The number on it say BR9ES

    B is the type of sparkplug

    R means it has a resistor

    9 is the temperature, thats the lowest so 0 is no resistance 9 is high

    E is extended thread

    S is Silly ( i dont know)

  • what is the temp rating of that type of plug?

  • Hey, thanks for taking the time to create the video and share with us.

    I did try this with two plugs;

    1=Denso Japan. Made for an Australian car. I heated it about the same time like in video, but the shaft snapped.

    2= NGK, a Japanese brand. Heated it for a much longer time, but that also broke the shaft in the plug. After chipping ceramic, i found thread and resistor around where the outside plug thread is, so am thinking it needs even more time for heat to reach it.

    Any ideas anyone???

  • As far as the high voltage or initial sparking goes, it is well known that a larger gap requires a higher voltage, which leads me to think that the plasma voltage required (after the spark ignites of course)may differ according to plug gap, & possibly to a lesser degree governed by some other factors; eg compression ; type of liquid (Petrol/ gasoline, water, or whatever); Just something to keep in mind with experimentation for your own setup.

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