NGKs Recommendations

[Leadfoot]

OK....God knows this has been brought up enough, so I'll keep it short & sweet.

I just got off the phone w/ NGK, and they recommend that if your looking to step a heat range colder, then go w/ the PZFR7G-G (stock plugs are PZFR6F-11). This plug has the exact same specifications as the stock plugs, one step colder & also have the copper core to help dissipate heat build-up (that's what the last "G" signifies). I was also told that going two steps colder may make the car virtually undriveable during normal conditions due to fouling out. (I initially asked about the BKR8EIX...an iridium plug).

Also....Our stock plugs are double platinum, NOT iridium. The iridium plug I mentioned above has the almost the same spec's, but projects 0.2 mm less into the cylinder (*as well as the BKR7EIX*). Well...that's some food for thought at least. I just thought I'd let you all know.

 

[DiscreetSpeed]

great info man...thanks

 

[Wild_MSP]

Does the fact that the Iridium plugs are 0.2mm shorter is really bad? I have the BKR7EIC sitting on my desk right now and I just hope I didn't get those for nothing!

 

[SOSPEED]

Well when I called them they told me to go with the ZFR7F since its what came with the car but just not platinum and is one step colder. You really dont need to put platinum plugs back in. The only reason they use these new platinum and iridium plugs in cars today is BC the companies advertise that there car can go 100,000 before your next tune-up so in order for them to do that they need a plug that could last that long.. And one more thing, what did they tell you the "G" stood for?? That it was a copper core??<O</O

Does the fact that the Iridium plugs are 0.2mm shorter is really bad? I have the BKR7EIC sitting on my desk right now and I just hope I didn't get those for nothing!

 

[Leadfoot]

yeah...the last "g" was for the copper core, according to the tech at NGK that I spoke with. I was under the impression that all of them had copper cores....but now I wonder. As for the platinum plugs, they will also allow your car to throw a stronger spark, which is the other reason that platinum & iridium are desired materials.

As for the BKR7EIC, the tech said that these would be suitable as well, and that he didn't know for sure if the 0.2 mm would make a difference or not. IMHO, I don't think it will be a problem because we're talking about an EXTREMELY small distance (it's the difference in the electrode thickness between the stock & BKR7EIC plugs). You should be fine.

Like I had mentioned before, I know it's been brought up tons of times, so I just thought I would throw this info into the pool for people to decide for themselves. I figure that the guys at NGK know a bit more about plugs than me....and I like to learn as much as possible.

 

[mspeed101]

Thanks for the good info

 

[Leadfoot]

no problem....I wouldn't consider it to be the Holy Grail of info, but those are the plugs that I ordered. I'll post up w/ results once I get it all in!

 

[CommieSpeed]

This annoys me....as when I called NGK they told me to purcase the plugs I have in my sig. I have been using them for months now and everything seems A-ok....but now I am all wondering if I didn't make the best choice.....let me know how those work out for you!!!

 

[Leadfoot]

Honestly I really think that the plugs that you have & the ones I'm getting are pretty much the same. The guy on the phone said that the difference would be the life of the plugs (I guess that Double platinum is supposed to last longer? (uhm)) As for the reach into the cyliner, the difference is most likely negligable. I'll definitely post up on how they work for me, but if you haven't had any problems, I'm sure your plugs are just as good (if not better). I'll bet that the difference is the preferences between the two people that we talked to.

This annoys me....as when I called NGK they told me to purcase the plugs I have in my sig. I have been using them for months now and everything seems A-ok....but now I am all wondering if I didn't make the best choice.....let me know how those work out for you!!!