Quick: spark plug gap for NGK 02 Z28

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09-13-2007, 02:14 PM

dansean1

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Quick: spark plug gap for NGK 02 Z28

Hey guys,
quick question. I am taking out my 86k miles original uridium spark plug and replacing w/ NGK TR55...Whats the gap supposed to be?

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09-13-2007, 02:25 PM

stevegrizzle

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they come gapped correctly from ngk i beleive

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09-13-2007, 02:39 PM

dansean1

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I bought these from a local auto parts store, not pre-gapped.

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09-13-2007, 02:42 PM

dansean1

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seems like they're supposed to be at .050? what do people really gap them at? I ask this as I heard a closer gap is easier on the coil packs??

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09-13-2007, 02:43 PM

BLKWS6

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.045-.050

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09-13-2007, 04:17 PM

dansean1

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Cool, thanx. Ill go w/ .048.
Im dyno'ing car Sat...need everything running good. shooting for ~350 to the wheel.

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