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Old 08-11-2008, 10:46 AM   #1
Lower_Level
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plugs, plugs everywhere!

Okay, I know I read in another post that most of you's are getting NGK copper plugs for your m50's from crappy tire for like $18 a set. But today when I asked the guy at the parts counter for BKR6E copper plugs, I got the look... The whutt?? look.

Very calmly I showed him the BKR6Eix plugs & said I don't want these; I want copper plugs, BKR6E whatever suffix gets me copper. Off to the computer he goes & tells me that NGK doesn't make those plugs.

Less then calmly I inform him that they DO make a copper plug. So after awhile he finds me BKR6E-11 plugs. I'm thinking that they are copper "V-power" plugs. Are these what everyone is running? Or are they no good? Do I have to break down & use iridium plugs?
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Old 08-11-2008, 10:59 AM   #2
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Yes, those are the ones (BKR6E-11). We use the in our race engines with great results. The IX are probably better for a street car, simply because they will last a long time.
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Old 08-11-2008, 12:34 PM   #3
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i'm about to put a set of IX's in my daily driver
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Old 08-11-2008, 02:49 PM   #4
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I've never been a fan of the iridium's. My last car ate them up in less than 20k but copper's always lasted...
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Old 08-11-2008, 03:41 PM   #5
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cool. thanks guys! V-powers it is!

Hey just checked the Bentley & it doesn't specify the gap??? WTF???
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Old 08-11-2008, 05:15 PM   #6
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vpower should be pregapped..
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Old 08-11-2008, 07:06 PM   #7
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yeah, I checked them out quick. they were all around .040"
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Old 08-11-2008, 09:47 PM   #8
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They're the ones I just put in my car

Looked on bf.c and everyone is saying simple copper plugs are the ones to get.

BTW these won't show up if you give the guy at cdn tire your car specs. It actually comes out under some Hondas...

NOne of my friends will believe me copper will give the best performance...at least for our motors, although they won't last as long as platinum or iridium.
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Old 03-21-2009, 10:27 PM   #9
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Can anyone go over the differences between the variations mentioned of the BKR6E's ?? In reading I notice mention of BKR6E, BKR6EIX, BKR6EQUP, BKR6EKUB, BKR6E11, and today when I called the local Partsource they had two variations of the plug, one being the last of the mentioned above and the other was BKR6EGP which the guy ended up saying is correct for BMW (over the BKR6E11). Needless to say I am confident ScotcH know's a great deal more regarding our cars than the Partsource employee, so based on his initial post in this thread I thought it might be good to cover this as there are a number of suffixes.
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Old 03-22-2009, 12:09 AM   #10
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The BKR6E part of the number tells the dimensions of the plug (14x1.25mm, 16mm hex, resistor type, 6 heat range, 19mm reach). This is the same for all plugs for our cars.

The next part is what tells you what kind of plug it is:

nothing = copper, standard gap
-11 = copper 1.1mm gap
IX = iridium
QUP = 4 prong platinum
KUB = 2 prong platinum
GP = 1 prong platinum

Here is the full chart for your reference: http://www.ngksparkplugs.com/docs/te...bols_plugs.pdf
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Old 03-22-2009, 06:17 PM   #11
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We have both the iridium and copper plugs in stock.

The proper plugs for the M5x motors.

Both work great, copper just seems to make a bit more power!!
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Old 03-24-2009, 04:03 PM   #12
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The additional "power" produced by copper plugs over the irridiums/platinums is minimal right? or are we talking like huge difference in power?
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Old 03-24-2009, 07:26 PM   #13
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Quote:
Originally Posted by 4BDN_328IS View Post
The additional "power" produced by copper plugs over the irridiums/platinums is minimal right? or are we talking like huge difference in power?
It's minimal. Copper is a better conductor. In most driving you probably won't tell a difference, but if you're trying to get the laso HO out (like in a race!) copper is a good cheap choice.
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Old 03-24-2009, 11:01 PM   #14
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Thanks Scotch! i shall keep this advice handy come spring maintenance =)... you learn new things everyday!
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Old 03-28-2009, 12:48 PM   #15
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What is the ideal gap for my 98 328is? I know the ngk plus all come pre gapped at .032.

Thanks
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