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Issues with BR7EF's

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Old 07-28-2014, 05:17 PM
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I switched from tr-55 to tr6 went I went turbo.

currently running 12 psi with tr6 and e85
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Old 07-28-2014, 05:41 PM
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Originally Posted by Chevy_King1500
I switched from tr-55 to tr6 went I went turbo.

currently running 12 psi with tr6 and e85
Whats the downside to running the br7 plug versus tr6? Im using the tr7 and any good reason I should go to the tr7 with e85?
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Old 07-28-2014, 06:03 PM
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What spark plug to use at 10 lbs of boost - LS1TECH

looks like 7s are just safer but 6s will do the job and last longer
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Old 07-28-2014, 07:18 PM
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I thought one of the advantages of e85 was being able to run more timing and a hotter plug?
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Old 07-29-2014, 05:55 AM
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I have a gauge for that
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Thats true...

If its cutting up under load you need to shorten the gap. I put around with 8s at 0.020" all day and it drives fine now that I fixed my alternator.
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Old 07-29-2014, 06:33 PM
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I been running 7's at .028 gap for 4 yrs now. never had any problems. 15+ lbs boost and lot of meth
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Old 07-29-2014, 08:22 PM
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B8EFS are working good for me at 18 psi. Gapped at .025 out of the box and that's where I leave them.
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Old 07-30-2014, 11:13 PM
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Originally Posted by Mangled03gmc
IMO your not running enough boost to even have them plugs... Go back to stock. You guys not running any boost and swapping all these plugs make me laugh. Seriously
my thoughts exactly lol. i didnt switch to br7ef till i was running 20+ psi go back to tr6's.
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Old 07-30-2014, 11:23 PM
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I ended up going back to TR6's gapped at 0.028" and it stopped breaking up in boost.
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Old 07-31-2014, 04:44 AM
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I had TR6 upto 15psi and it boosted to 20psi on the dyno with no problem.

Now I have TR7 gapped at .028" for 15psi. Planning for pump upgrade then 20psi on same plugs. I changed to TR7 plugs only when I upgraded from T76 to S480 planning for more boost.
Last edited by Denali08; 07-31-2014 at 07:08 AM.
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