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Old 06-29-2009, 12:23 PM   #1 (permalink)
rx7
 
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Default Spark plugs gap

Hi all, greetings from Singapore (Asia)

I've read that most boosted D16s have their plugs gapped at .028-.030. However, i would like to know how to measure the gap and what unit of measurement do you guys use so i can convert. I'm running on Denso Iridiums IK20. When my car runs into boost, it will sort of stutter, or jerk, kinda feels like there isn't enough power, and then it'll be fine after like a sec or 2 and then boost smoothly. Im guessing its my plugs because i just had it changed but i dont know how its gapped. So i would like to know more from you guys here on how to measure them. Any help is greatly appreciated!
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Old 06-29-2009, 12:42 PM   #2 (permalink)
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you cant gap an iridium you will mess up the electrode

most people here use inches, ie .028 inches
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Old 06-29-2009, 12:48 PM   #3 (permalink)
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Oh, so what would you suggest? Should i get a set of NGKs? Or does iridiums work fine and the problem i'm facing is something else?
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Old 06-29-2009, 12:49 PM   #4 (permalink)
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.0280" to .0300" is equal to .7112mm to .7620mm
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Old 06-29-2009, 01:47 PM   #5 (permalink)
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Oh, so what would you suggest? Should i get a set of NGKs? Or does iridiums work fine and the problem i'm facing is something else?
get some NGK BKR7E or NGK R5671A-7
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