which copper plugs ?

[shadow]

From my other thread, I got the feeling that copper is a better choice over the iridium plugs for a n/a 2001 cobra.
Now which brand ?
what gap ?
Is it really worth replacing the stock plugs with these ?

 

[Vinnie T]

I'm using the NGK Iridium's, but would go with NGK on the copper's also. Denso makes a good one too. Can't go to wrong with either one.
The stock plugs are platinum. Their only advantage over copper is that they will last a lot longer if that's important to you. The copper's will give a better spark, and the iridiums and even better and more consistent spark than the coppers. Iridium is 10x harder than even platinum, so the center electrode can be made very thin and produces a easy and consistent spark.
The gap is .052-.056 if I remember right. Check the label under the hood to make sure.

 

[AV8R]

Plain ole NGK's here

 

[Vinnie T]

Found this on Stangnet. It has to do with their project Bullitt, and includes dyno runs and performance evaluation of both NGK and Denso Iridium plugs in addition to other mods. Kinda interesting...........

http://www.stangnet.com/tech/lee50guru/dense_tech.html

 

[no_slow_svt]

bought some densos for my 99.
I had some light missfiring at idle and the denso's took care of it and my acceleration feels alot smoother.
12 bucks a plug was worth it in my book.
gapped at .054

just thought i would share. im happy with them.
J

 

[E. Green Cobra]

Sean Hyland recommends copper NGK's.