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Old 06-25-2008, 05:41 PM   #4 (permalink)
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Mica Blue - '05 Scion xA RS 2.0
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If flame spread is the limiting factor on burning all the fuel (or as much as possible) in an engine, then having a spark that is 3mm "wider" is barely going to help at all, if any.

An engine that is that poorly designed, should have dual spark plugs; where the two sparks are much farther apart!
Sincerely, Neil
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