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Cutting open plugs for jetting (pics)
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[QUOTE="Rich Rohrich, post: 1272159, member: 16241"] They are all jetted pretty close except for C, which inspite of being white is ~2 sizes too rich on the main for MX, but jetted perfectly fine for trail riding, or woods work. The plug is running a bit too hot for the application. Just so the [b]"More oil is Bad 50:1 Club"[/b] is clear on things, Plug D is from an RM150 running 18:1 and ridden by a complete motosquid (ME) on a really tight track that sees very little WOT running. So much for the belief that more oil will foul plugs [img]http://dirtrider.net/ubb2/smile.gif[/img] The plug isn't running hot enough on plug D to properly clear the deposits from the nose of the insulator which is the ONLY reason it is chocolate colored, it should be much lighter colored (whitish /tan) if the plug were running at the proper temp, but Plug D should give you a pretty good idea what the fuel ring should look like at the bottom of the insulator. That's where you want to look to read the Main jet. [/QUOTE]
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Dirt Bike Brands - Other
Cutting open plugs for jetting (pics)
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