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Spark Plug Gap???

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Old 09-16-2012, 11:03 AM
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Default Spark Plug Gap???
What should I gap my plugs at?
11.7:1 compression.
Around 25 degrees timing
110 leaded race gas (don't trust pump gas)
N/A
TR6 plugs
Track only car.
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Old 09-17-2012, 01:44 AM
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.030" or so seems like a good starting point. Tighter ain't bad, I've run .022" in the N/A LT1 and it runs fine.
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Old 09-20-2012, 05:35 PM
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Anyone else, can someone explain the difference in a narrower gap than a wider gap.
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Old 09-21-2012, 06:59 AM
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What ignition system and coil are you using? This makes a difference on the recommended gap settings.
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Old 09-21-2012, 05:54 PM
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Originally Posted by Longbob
What ignition system and coil are you using? This makes a difference on the recommended gap settings.
Stock LS1.
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Old 09-21-2012, 08:24 PM
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Ok, that is a longer duration ignition system so I would gap them at .035.
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Old 09-21-2012, 08:26 PM
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Sorry, I forgot to answer the difference. A shorter duration, but more intensive ignition system like a MSD 7AL2, would be better served with a wider gap like .045.
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Old 09-22-2012, 12:25 PM
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Thanks!
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