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Old 01-23-2010, 10:05 AM
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Motorized Bicycle Elite Member
Join Date: Dec 2009
Location: Maine
Posts: 489
Default Sparkplug Indexing??(Slant)

I was wondering if indexing the spark plug on these engines is a worthwhile endeavor. Both of my PK80 Slant motors with NGK's (or stock) have the outer electrode facing down, basically shielding the direct spark from the piston. I'm thinking facing the piston = Better. Anyone's thoughts??
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