Platinum Plugs? Yea or Nay?

Foster98GT · Mar 7, 2006

I was thinking of going with Autolite Platinum Plugs, anyone has experience with them? I hear a lot of people talking about NGK plugs how are they? If you use them what part number are they?

badass98svt · Mar 7, 2006

the stock plugs are platinum.
however, believe it or not, copper plugs work better than the plats. the coppers just dont last nearly as long as the plats.
if you plan on changin them every 20-30k, then go with the coppers.
plus they are about $1 each

Matt94GT · Mar 7, 2006

Nay. Unless 4.6 are diffrent then us 5.0 guys, none of us seem to like platniums and we all use Autolites.

STNG_96 · Mar 8, 2006

Plugs are deffinately something Ive heard you should stick with from the factory. Use motocraft plugs, just like the ones that came in your car.

Dans97GT · Mar 10, 2006

from my own experience, Autolite platinums were no different than Motorcraft platinums in my car - but I run coppers now because the engiine is much smoother with them. IMHO, dont waste the money on plats, just get $1/each coppers and be done with it :thumb:

sanitarium16 · Mar 24, 2006

Dans97GT said:
from my own experience, Autolite platinums were no different than Motorcraft platinums in my car - but I run coppers now because the engiine is much smoother with them. IMHO, dont waste the money on plats, just get $1/each coppers and be done with it :thumb:

DONT USE AUTOLITES....They ARE different than motorcraft.....the Motorcraft are better quality and sit deeper in the head.....the threads are longer....just got rid of the autolite double platniums i had in my car...it was starting to misfire.....the plugs were arching and i only had them in for 6 months!!!

Adam · Apr 3, 2006

Copper is a much better conductor of electricty than platinum, even though it does wear out sooner. NA cars with copper plugs need to be changed every 15-20K. On blower cars, change them every 5-10K.

2V NA -AWSF-22C gapped to .050"
2V PA -AWSF-12C gapped .032"-.040"
4V NA/PA-AWSF-22C NA gap .050"
PA gap .025"-.035"

Adam

badass98svt · Apr 3, 2006

adam 4v's(at least the 96-98s) perform best at .054 with copper plugs.

Adam · Apr 3, 2006

badass98svt said:
adam 4v's(at least the 96-98s) perform best at .054 with copper plugs.

Just out of curiosity I am wondering why you would say this? Dyno testing? SOTP?Thanks

Adam

badass98svt · Apr 4, 2006

i'm a memeber over on svtp, and that is the gap that EVERY 96-98 cobra uses over there. i know it's not much proof, but obviously it works!

Adam · Apr 4, 2006

badass98svt said:
i'm a memeber over on svtp, and that is the gap that EVERY 96-98 cobra uses over there. i know it's not much proof, but obviously it works!

No offense man but just because everybody does it doesn't make it right.

Adam