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Old 04-07-2015, 07:26 AM   #1
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New Plugs?

Going to be giving my new r32 a good inspection after I pick it up from the port and thinking of just replacing the plugs also. Was looking at installing NGK BCPR6ES-11
Is this a good plug for a fairly stock RB26?
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Old 04-07-2015, 07:58 PM   #2
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Those are copper plugs right? I can't claim to be expert enough to know whether they're fine for the RB but I can at least tell you the stock plugs are platinum NGK PFR6A-11s. I've heard recommendations for NGK Iridium BCPR7EIX as a great replacement. My car came with NGK Iridiums in the 6 heat range but they're hard to find in the US so I went with the BCPR7s. I did a write-up on basic R32 maintenance needs here and the spark plugs are listed:

23GT: Fixing What Ain't Broke: R32 Skyline Preventive Maintenance
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Old 05-07-2015, 03:13 AM   #3
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From what I have found, they are a copper version of the stock plugs. I see no advantage to using platinum plugs. Copper is a better conductor and I've been using them in 600+ HP cars for years.
Thanks for the link. Some good reading and info.
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Old 05-07-2015, 06:34 PM   #4
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The only difference between copper, platinum and iridium is service life, the more precious the metal the longer they last........and the more they cost.
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Old 05-07-2015, 06:51 PM   #5
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Iridium vs copper, potentially twice the lifespan, but four or five times the price. No brainer.
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Old 07-07-2015, 03:46 AM   #6
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Quote:
Originally Posted by StuartTheFish View Post
Iridium vs copper, potentially twice the lifespan, but four or five times the price. No brainer.
Here in the US I was able to get the NGK Iridiums for 6 bucks each - about the same price as the copper ones he mentioned.
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Old 07-07-2015, 09:30 AM   #7
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Over here it's about 10 for 6 copper plugs, or something like 45 or more for 6 iridium ones. Complete waste of money.
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Old 07-07-2015, 11:35 AM   #8
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I've got copper core BCPR7ES11 on the way. Plugs and fuel filter this weekend.
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Old 07-07-2015, 04:44 PM   #9
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Quote:
Originally Posted by TaraFirma View Post
From what I have found, they are a copper version of the stock plugs. I see no advantage to using platinum plugs. Copper is a better conductor and I've been using them in 600+ HP cars for years.
Thanks for the link. Some good reading and info.
Quote:
Originally Posted by TaraFirma View Post
I've got copper core BCPR7ES11 on the way. Plugs and fuel filter this weekend.
All plugs have copper core, and heat range 7 is a bit cold for a stock motor.
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Old 08-07-2015, 04:38 AM   #10
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Plus 1 with NGK Iridium BCPR7EIX . It would surely last longer and better fuel efficiency.
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Old 08-07-2015, 11:18 AM   #11
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Plus 1 with NGK Iridium BCPR7EIX . It would surely last longer and better fuel efficiency.
No. I've known people replace iridium plugs sooner than I've replaced copper plugs. In theory they're supposed to last longer, but don't always, and even then, twice the life doesn't mean they're worth four times the price.

As for the fuel efficiency, again, no. An iridium coating isn't somehow going to make an engine any more fuel efficient. If anything, iridium isn't as good a conductor as copper, so potentially the spark created may actually be a little weaker. Again, they're a waste of money.
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Old 09-07-2015, 03:58 AM   #12
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Quote:
Originally Posted by StuartTheFish View Post
No. I've known people replace iridium plugs sooner than I've replaced copper plugs. In theory they're supposed to last longer, but don't always, and even then, twice the life doesn't mean they're worth four times the price.

As for the fuel efficiency, again, no. An iridium coating isn't somehow going to make an engine any more fuel efficient. If anything, iridium isn't as good a conductor as copper, so potentially the spark created may actually be a little weaker. Again, they're a waste of money.
Hmmm OK, I'm just sharing my thought and experience in using Iridium plugs.
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Old 18-07-2015, 07:43 AM   #13
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Life saver thank you GSX-R35 website full of good information




Quote:
Originally Posted by GSX-R35 View Post
Those are copper plugs right? I can't claim to be expert enough to know whether they're fine for the RB but I can at least tell you the stock plugs are platinum NGK PFR6A-11s. I've heard recommendations for NGK Iridium BCPR7EIX as a great replacement. My car came with NGK Iridiums in the 6 heat range but they're hard to find in the US so I went with the BCPR7s. I did a write-up on basic R32 maintenance needs here and the spark plugs are listed:

23GT: Fixing What Ain't Broke: R32 Skyline Preventive Maintenance
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Old 25-07-2015, 08:33 AM   #14
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I went with NGK (2667) BKR7EIX Iridium IX from what I found in a few other forums.
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Old 25-07-2015, 09:01 AM   #15
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I done 55k miles on the platinum plugs in one of my cars.
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