975spEEd

I know there has been much discussion before about sparkplugs and
I already searched but a ton of threads came up and didn't find the
answers I was looking for in the ones I looked at. So is there any
problems with running the ngk copper vs. the platinums. I'm mainly
concerned if the coppers will put any extra wear on the engine or
ignition system from the better spark. I know you have to change them
more often, but they are 1/4 the price of platinums. Did Nissan put
the platinums in because they just last longer or did they design
the ignition system for use with the lesser spark of the platinum plugs? Also is there any noticiable differnce in performance or smoothness running the coppers, and are they pre-gapped like the platinums( -11 means .44? or .044? right)
Thanks for anyone's help who responds, sorry if this
topic is played out but I'm doing mine this week and need some straight answers.

pmg

No prob w/ using coppers. Platinums were OEM because they lasted longer I believe. Coppers are pre-gapped and probably won't yield any noticable performance difference.

975spEEd

Thanks for the imput, C'mon I know there's more of you that run
ngk coppers, info/advice please!

SuDZ

I run them no prob. Just chaneg em at 30K intervals.

SuDZ

sbslacker

iTrader: (1)

My friend, before you proceed please read the following thread. It should answer all of your questions concerning this topic.

http://forums.maxima.org/showthread....k+plug+gapping

Sprint

iTrader: (10)

i run coppers.. put coppers in my friends 95SE and my cousin's 97 SE is running coppers..

if you get the ones on my website it has the part number from nissan.. and they are already pre-gapped

hairris

Well what about iridium? I have heard good things about them are they and worse or better than these platinums or coppers?

Sprint

iTrader: (10)

they just last longer.. thats about it.. and they cost more

bill99gxe

iTrader: (1)

Save $45 and get copper plugs:

http://forums.maxima.org/showthread....5&pagenumber=2

I'm running them on my 99. No discernable differences.

SuDZ

Much more. A friend did them in his car (non Maxima) and was looking at another 30 dollars over the cost of plats.

SuDZ

jbreit

i just taunted the forum with this topic too. I even went to NGK to ask what they recommend...The tech said he would use IX series(iridium)...but he said i would only get 40K out of them...and they are still $7+ each. I bought some coppers for $2.29 each, but also ordered a set of G-power (poor man's platinums) for $3.29/each for both the maxima and my tahoe. There is a VX platinum in the middle too...~$5.50 each...I'll let the forum know how the G-power's run. but coppers are the best in terms of $/mile.

the "improved" spark of coppers is a hot topic...i won't muddy the waters with my opinion....a hotter spark can only improve the efficiency of the combustion process and certainly won't harm anything. Platimums are used to increase service life. Platinum has a higher molecular weight that copper so it erodes more slowly, and hence the gap stays more consistent through its life. Only a small bit of platimum is used at the tip and on the electrode, so the ignition system design is likely not any different than it would be for coppers.

www.clubplug.net is where I bought from most recently