Just pulled out BKR5E spark plugs?? - Miata Turbo Forum - Boost cars, acquire cats.

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Old 01-23-2007, 12:33 PM   #1
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Default Just pulled out BKR5E spark plugs??

I decided to swap out my plugs today and to my suprise all the plugs were BKR5Es instead of the recommended BKR7Es. Is the 5 series hotter or colder?
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Old 01-23-2007, 12:46 PM   #2
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two steps hotter.

i lied before, then edited.
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Old 01-23-2007, 01:04 PM   #3
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One step. he's got a '99 so that's OEM. Get BKR6Es.
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Old 01-23-2007, 01:22 PM   #4
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Already installed 7's guess i'll have to run them and see what happens.

You want one step colder than stock usually though right?
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Old 01-23-2007, 01:54 PM   #5
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1 step for every 75-100 hp or so. 2 steps shouldn't hurt.
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Old 01-23-2007, 02:40 PM   #6
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You want to run the hottest plug you can without detonation.
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Old 01-26-2007, 02:50 AM   #7
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I found my 1st answer to my question...
BKR7E...
for the stock turbo setup?
Gap? .037?...
thoughts?
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Old 01-26-2007, 11:48 AM   #8
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.03-.035"
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Old 01-26-2007, 12:51 PM   #9
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The BKR7E is already pre-gapped at .035", I believe. The BKR7E-11 is pre-gapped at .043" (the "11" means 1.1mm, or about .043").
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Old 01-28-2007, 11:10 PM   #10
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Thx., .035 GAP... I'll dbl check them.
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Old 02-02-2008, 05:43 AM   #11
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Hrm. I grabbed BKR6E-11... How hard is to re-gap them? I bought a feeler tool... Do I just kinda squish the tip of the plug until the gap is right? Maybe I should take 'em back and trade 'em in for some non-11's. It's just a mile up the street.

-Mike
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Old 02-02-2008, 06:27 AM   #12
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Just squish it until it's right. I'm forced to run .024-.025 gaps on my plugs since anything higher will blow out with boost.

I need cops :(
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Old 02-02-2008, 03:36 PM   #13
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Are you sure your dwell settings are right?

What are the symptoms of spark blowing out?

-Mike
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Old 02-03-2008, 01:38 AM   #14
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Quote:
Originally Posted by grippgoat View Post
Hrm. I grabbed BKR6E-11... How hard is to re-gap them? I bought a feeler tool... Do I just kinda squish the tip of the plug until the gap is right? Maybe I should take 'em back and trade 'em in for some non-11's. It's just a mile up the street.

-Mike
i'm using the same plugs as u (bkr6e-11) and i just used a gapper to set them at 33... pretty easy,
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