RB26 Spark Plugs Again.....

[Ramius83]

Ok, I am down to the last few things here on the engine.

I have noticed that the stock RB26 spark plugs are the NGK PFR6A-11. They are the double platinum series plugs, and at $11.50 a plug, it hurts to buy 6.

From my previous experience with turbo Nissans, my 96' 400HP Nissan Maxima, we ALWAYS used the copper series NGK plugs. There were a few reasons why, such as stronger spark, cost, no pre-detonation, etc.

Now, that I can figure, the NGK Copper plugs I would need are the BKR6E-11, is this correct? And if I wanted to go a step colder I could go for BKR7E-11? Does this sound about right to everyone?

And would I see any negative effects with going to the copper plugs, other than mileage?

Thanks all.

[BoostFab]

Ok, I am down to the last few things here on the engine.

I have noticed that the stock RB26 spark plugs are the NGK PFR6A-11. They are the double platinum series plugs, and at $11.50 a plug, it hurts to buy 6.

From my previous experience with turbo Nissans, my 96' 400HP Nissan Maxima, we ALWAYS used the copper series NGK plugs. There were a few reasons why, such as stronger spark, cost, no pre-detonation, etc.

Now, that I can figure, the NGK Copper plugs I would need are the BKR6E-11, is this correct? And if I wanted to go a step colder I could go for BKR7E-11? Does this sound about right to everyone?

And would I see any negative effects with going to the copper plugs, other than mileage?

Thanks all.

it's no need to spend $11 each on the platinums....just buy the $2ea NGK 3330 (BCPR7ES) it's pregapped. that's what i'm using on my RB with no problem. all the supra guys i know uses them and have no problem with high boost.

[JonPowell]

Alot of guys SWEAR by copper resistor plugs on the RB motors, I recommend them and love them on every motor I have run.

[Ramius83]

So Jon, are these the right plugs that I mentioned? Even down to the right part number? These are the same plugs that the 300zx TT guys use, as I bought these for my turbo Maxima. Thanks again.

[sparkplugs.com]

What year & engine size is your Maxima?

[JonPowell]

I buy the NGK V-Power copper plugs for the 94 300ZX TT whenever I order for Rb25...I believe the RB26 is the same.

[sparkplugs.com]

stock plugs on the 300ZX is PFR5B-11B. One step colder would be a 6, but they don't make this exact plug in a 6 heat range. We run into problems with these special design plugs(plugs with A,B,C letters after the heat range) as NGK doesn't specify what exactly is special or different about them. I would recommend calling NGK's tech at 877-473-6767, Jon is at menu option#2, and then #2 again.

[Ramius83]

Hey Sparkplugs.com

I had a 1996 Nissan Maxima, with the 3.0 liter VQ motor in it, using a T4/T04E Supershaft Ball-Bearing turbo. We always used the BKR6E-11 NGK Copper plugs for turbo and supercharger applications on boosted Maximas. These plugs have proved themselves time in and time out at http://www.maxima.org.

If JonPowell purchased the V-Power NGK Copper plugs for the 1994 300zx TT, then the part number that he purchased is BKR6E-11, which is identical to the plugs we used on the Maxima for charged-air applications. And step colder will be BKR7E-11. Any of this info sound incorrect to you? Thanks for the help guys....

[Ramius83]

Ok, I called NGK's tech line.

Stock plugs on the RB26DETT motor are the NGK PFR6A-11 Double Platinums. This means that the same plugs in the NGK Copper series are the BKR6E-11 plugs, and the BKR7E-11 plugs being one step colder. AWESOME!!!!!!!!!1

At around $2.25 a plug, you can't go wrong......

[BoostFab]

Ok, I called NGK's tech line.

Stock plugs on the RB26DETT motor are the NGK PFR6A-11 Double Platinums. This means that the same plugs in the NGK Copper series are the BKR6E-11 plugs, and the BKR7E-11 plugs being one step colder. AWESOME!!!!!!!!!1

At around $2.25 a plug, you can't go wrong......

Ok, I called NGK's tech line.

Stock plugs on the RB26DETT motor are the NGK PFR6A-11 Double Platinums. This means that the same plugs in the NGK Copper series are the BKR6E-11 plugs, and the BKR7E-11 plugs being one step colder. AWESOME!!!!!!!!!1

At around $2.25 a plug, you can't go wrong......

go with the 7 series, as they are colder and better for boost. The 11 in the NKG part number signifies 1.1mm gap. so you would need to regap them for the rb.

[Ramius83]

However, the plug gap for the stock PFR6A-11 NGK plugs is already 1.1mm correct?

I have already planned on re-gapping them to around .038" or .039" anyways, as I have no real power adders as of yet on the engine, and probably won't for a while.....

[sparkplugs.com]

yup, 1.1mm / .044"

[JonPowell]

Try .8MM for more than stock boost RB motors!

[rb20sc]

what about using some autolite plugs

[Ramius83]

BLAH!!!!!

I don't use autolites on any of my cars, and never will.

Autolites are mainly used on domestic cars anyways. I only use NGKs.

[JonPowell]

EVERY RB motor I have gotten has been filled with ONLY autolite plugs.

[jrou111]

I ordered my RB20 from Venus, and it came with NGK Platinum PFR5A-11.

I picked up some BKR6ES-11 as well, since I can get them for >2 bucks each.

[accel junky]

EVERY RB motor I have gotten has been filled with ONLY autolite plugs.

Mine did to.