Platinum or Copper Plugs?

[3dKa24]

Good read on spark plugs http://www.se-r.net/engine/pla....htmlI recently switched to copper, does anybody else run copper plugs? If not what do you run?

[neverlift]

good find, put some platinums in my wifes dads 5.0 crown vic, he didn't notice any gains in power or mpg,that explains it. we didn't set the gap apart more. lol

[3dKa24]

Also when you buy Coppers they still set the gap at .044 so you have to set it back down to .035. When I installed the coppers I felt a considerable loss in power I WAS like WTF "Coppers do suck", did a little research and it turns out your supposed set the gap. Hope this helps people , I spent 5$ for 4 coppers nice HUH, and Ill swap them every other oil change.
Modified by 3dKa24 at 9:22 PM 7/12/2006

[jgtc_s14]

i run irdium i had platinum before i dont notice anything so i dont know

[Bigvinnie]

I use platinum if the engine is streetable with advanced timing upto 23ATDC.Running advanced timing any higher I would use iridiums.Platinums are comfortable, and using 91 octane.