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Choice of spark plugs?

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Old 01-19-2008, 10:03 AM
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Default Choice of spark plugs?
Wondering what the census is on the brand and temperature of spark plugs you guys are using with big boost?
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Old 01-19-2008, 02:28 PM
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The vast majority of people here are runnign TR-6s.

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Old 01-19-2008, 02:57 PM
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That's what I was looking for. Thanks
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Old 01-19-2008, 04:09 PM
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TR-6 with "big boost" ??

Are you sure ? I thought most were on 7's or 8's at that level ?
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Old 01-19-2008, 05:49 PM
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NGK 7173...heat range 8
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Old 01-19-2008, 06:00 PM
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Brisk silver core
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Old 01-20-2008, 06:12 AM
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Originally Posted by stevieturbo
TR-6 with "big boost" ??

Are you sure ? I thought most were on 7's or 8's at that level ?
LOL, I totally missed that part of it. I guess it depends on what big boost means. I know a fair number of people pushing 800 rwhp with TR6s.

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Old 03-17-2008, 04:20 PM
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What about NGK iridium? which ones are good for boost?
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Old 03-17-2008, 04:34 PM
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You guys need to be more specific on what "boost" and "big boost" is. It is relative for sure.
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Old 03-17-2008, 06:50 PM
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Originally Posted by maxgee
What about NGK iridium? which ones are good for boost?
Last time out, I used NGK BKR8IEX ( or EIX cant rem...same thing anyway ) and these were in fact reccomended by NGK themselves.
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Old 03-17-2008, 07:22 PM
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I am running the NGK 5724-8 with 15psi of boost.
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Old 03-17-2008, 07:52 PM
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tr-6 here with no problems at the 1k mark.....
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Old 03-17-2008, 08:30 PM
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TR8's here running only 7 #'s atm the part throttle response was WAY better than with the TR6's
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Old 03-17-2008, 09:15 PM
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tr-6's hear. car will be at 7-8 psi. Not sure how they will be, but were recommended to me by many.

Chris
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Old 03-17-2008, 09:58 PM
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Im using tr6s gapped at .025. No problems yet.
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Old 03-18-2008, 07:36 PM
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"TR7"s gapped at .025" for 3 years now on 15psi, I've tried the TR6s and I couldn't get it to run decent with them. Change my plugs once a season (7k miles)
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Old 03-18-2008, 08:12 PM
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tr6's at 700-750whp seem to work really well for me.
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