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NGK tr6 spark plugs?

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Old 10-23-2013, 11:46 AM
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Default NGK tr6 spark plugs?

i pulled the plugs and the gaps were horrible... " learning experience" that being said the plugs i got were the NGK R BR7EF plugs. i pulled them and 2 of them are cracked to im going to run into town and get some new ones. the only issue is they only have the tr6 plugs in town and id have to order the others. from what i read on here i can run either correct? also if i get them what should i gap them too? boost will be between 8-12 psi from what i gather .30-.35 ?? thanks guys.

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Old 10-23-2013, 12:04 PM
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For that boost you could run a 6 and shoot for a gap in the .030-.032 range IMO
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Old 10-23-2013, 12:12 PM
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ok cool ill run into town ,try and get them and gap them at .30 ?
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Old 10-23-2013, 12:13 PM
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I'm in that boost range and run TR6's at 0.028". I tried BR7EF's and it caused it to break up in boost, blowing out spark? Also ran rougher around town. Went back to TR6's and haven't had a single issue.
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Old 10-23-2013, 12:17 PM
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awesome thanks for the info man. yea i been having alot of idle issues but one of the plugs was way badly under gapped. totally spaced checking them before install " FAIL!" but ill run into town and get some tr6's
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Old 10-23-2013, 01:19 PM
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Keep us updated if the new spark plugs fix your idling problems !
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Old 10-23-2013, 01:29 PM
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will do. ill gap them at .30 and see how it does.
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Old 10-23-2013, 02:19 PM
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got the plugs in gapped at .30 and it started right up and seem to idle alot better. im waiting for a buddie to get here and we will do a few logs... see how she does.
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Old 10-23-2013, 03:02 PM
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What compression is your engine at with the milled heads?
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Old 10-23-2013, 03:33 PM
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10.2 to 1
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