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Old 11-09-2009, 08:31 AM   #21
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I've been able to run .035"-.037" on the stock 01+ coils + Magnacore wires + NGK race plugs.
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Old 11-09-2009, 11:20 AM   #22
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Yeah i measured the stockers and they were about 37-38
i made the new ones 33
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Old 12-01-2009, 01:48 AM   #23
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Recommended spark plugs/gap for 95 on 7psi, stock coils?

Was assuming to go with BKR7E's but unsure of a correct gap...

Guess there really is no definitive FAQ on proper spark plug choice and gap?
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Old 12-01-2009, 09:44 AM   #24
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i'm running ~0.032 on BKR7E but thats with a blaster II coil and a distributor... its a little easier for me to upgrade than you guys
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Old 12-01-2009, 08:23 PM   #25
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lucky lol very impressive car man!

anyone else running BKR7E?
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Old 12-01-2009, 08:24 PM   #26
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Yes. Many people.
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Old 12-01-2009, 08:32 PM   #27
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Quote:
Originally Posted by NAshowdown95 View Post
anyone else running BKR7E?
thats the standard plug recommended for turbo miatas
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Old 12-01-2009, 09:08 PM   #28
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18psi,triple88a...thanks for the info guys.


Whats the recommended/common gap on those plugs on stock 1.8 coils?
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Old 12-01-2009, 09:42 PM   #29
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.035-.030 is what mine are set to.
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Old 12-02-2009, 12:01 AM   #30
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Whats stock plug gap anyway? Just for an N/A engine? (Not COPs)
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Old 12-02-2009, 12:07 AM   #31
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I think its somewhere in the high 40's low 50's? Just guessing
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Old 12-02-2009, 12:09 AM   #32
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Quote:
Originally Posted by 18psi View Post
I think its somewhere in the high 40's low 50's? Just guessing
Lol he did say NOT cops

from what i've found 35-40 is good.
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Old 12-02-2009, 12:49 AM   #33
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Mazda specs the stock gap at 1mm because, that's right, they've got the metric system! If you do the math it's pretty close to .040" which is a nice easy number to remember.

Being still N/A I haven't felt compelled to run BKR7Es but I do run BKR6Es (one heat range colder than the stock BKR5E) because it hits the track a few times a year. On a totally stock street only car I don't see any need to run colder than stock plugs.
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Old 12-02-2009, 01:29 AM   #34
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Quote:
Originally Posted by ScottFW View Post
Mazda specs the stock gap at 1mm because, that's right, they've got the metric system! If you do the math it's pretty close to .040" which is a nice easy number to remember.

Being still N/A I haven't felt compelled to run BKR7Es but I do run BKR6Es (one heat range colder than the stock BKR5E) because it hits the track a few times a year. On a totally stock street only car I don't see any need to run colder than stock plugs.
0.03937 to be exact.
The OCD in me had to say something.
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Old 12-02-2009, 02:12 AM   #35
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I ran .025 with the wrong spark resistor in my MS with stock '99 coils.
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Old 12-11-2009, 10:56 AM   #36
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I just turbo'ed my car, with an HKS kit w/o intercooler boosted at 5,8 psi:

I bought NGK BKR7EIX-11 where 11 stands for the 0,043" gap...

It is the standard gap of the NA version, could it be too much?

I tried to boost @ 6,5 psi and i heard it knock, could it be because of the plugs' gap?

what if the gap is too much??
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Old 12-11-2009, 11:01 AM   #37
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then you'll have spark blow out issues, and no spark = no boom = no detonation.
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Old 12-13-2009, 01:52 AM   #38
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lol
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Old 12-13-2009, 09:51 AM   #39
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Quote:
Originally Posted by Braineack View Post
then you'll have spark blow out issues, and no spark = no boom = no detonation.
i didn't really understood what you meant...

anyway I put the gap at 0,035"...

It went good...

I tried the car on the motorway and reached 6500 rpm in 6th gear at 225 kmh...

It seems it is good!!
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