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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.


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Old 06-19-2011, 01:20 PM
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Pepperami Pepperami is offline
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Default Spark plug?

I have just changed my spark plug. EC200 2005. It had a B7 ES in it where as it says it should be a BR8 EG. The bike has been running great, starts easily even after an off. What is the difference and basically what should I do, Stick with what was in it or change to standard?


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Old 06-19-2011, 02:52 PM
lankydoug lankydoug is offline
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Quote:
Originally Posted by Pepperami View Post
I have just changed my spark plug. EC200 2005. It had a B7 ES in it where as it says it should be a BR8 EG. The bike has been running great, starts easily even after an off. What is the difference and basically what should I do, Stick with what was in it or change to standard?
The 7, 8, or 9 ect. denotes the heat range. If it is jetted correctly the 8 should work perfectly. Some try hotter or colder plugs to compensate for incorrect jetting but that practice is really not a good idea.
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Old 06-20-2011, 07:36 PM
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WTEC WTEC is offline
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The "7" is one heat range hotter than the original and the "ES" is a standard electrode material where as the "EG" is platinum I believe (going from memory here). The "R" means it is a resistor plug which helps eliminate radio and other electronic interference. Like Lankydoug said, some guys will use a hotter plug to try and avoid jetting a bike properly or cover up other mechanical issues, but it should run best with the factory recommended heat range unless heavily modified. Here is a link to a good explanation of heat ranges:

http://www.championsparkplugs.com/ch...?kw=Heat+range

Wes.
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Old 06-28-2011, 01:49 PM
TNT Cycle TNT Cycle is offline
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"EG" is standard material small electrode, aka the Race Plug. "EIX" is iridium. Some times you can find the odd ball almost never used "EGV" plugs that are V-groove platinuims.
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