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Old 01-26-2010, 03:55 PM
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Motorized Bicycle Elite Member
Join Date: Dec 2009
Location: Maine
Posts: 489
Default Re: Sparkplug Indexing??(Slant)

OK so I indexed the spark plug, outer electrode facing up, only took .040 shim. No other changes, before and after runs, Same warm-up distance from cold. I noticed it came on the pipe quicker on top end, before run it 4 stroked lightly, didn't clear out for about 10 seconds, cool down, reindex to "unshield" spark gap, same warm up, it 4 stroked right on top end a bit, like 1 second, then cleaned right out. I know that's not scientific but I tried to keep test as consistent as possible. Heck it works for me!

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