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New Edge Cobras
Newbie Spark Plug Range/Gap?
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<blockquote data-quote="01fordcobra" data-source="post: 9525908" data-attributes="member: 73218"><p>All depends on the mods, but lets say your are pulling 8# of boost from a Kenne Bell on stock internals. Factory Gap is .054, start closing that gap otherwise you will start misfiring. You want the gap to be opened up as much as possible to produce the hottest and longest spark, but with the boost of a supercharger it is going to want to blow the flame out, which is why you need a smaller gap.</p><p></p><p>Heat range is important as well, a hotter plug will have more of a chance of accidentally firing (detonation) before the piston gets past TDC. Very bad. I would recommend going 1 if not 2 steps colder than the factory plug. Best of luck to you.</p></blockquote><p></p>
[QUOTE="01fordcobra, post: 9525908, member: 73218"] All depends on the mods, but lets say your are pulling 8# of boost from a Kenne Bell on stock internals. Factory Gap is .054, start closing that gap otherwise you will start misfiring. You want the gap to be opened up as much as possible to produce the hottest and longest spark, but with the boost of a supercharger it is going to want to blow the flame out, which is why you need a smaller gap. Heat range is important as well, a hotter plug will have more of a chance of accidentally firing (detonation) before the piston gets past TDC. Very bad. I would recommend going 1 if not 2 steps colder than the factory plug. Best of luck to you. [/QUOTE]
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Newbie Spark Plug Range/Gap?
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