This is topic Iridium spark plugs in forum Tech Talk at Northern California Ford Owners  .


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Posted by CarlosLaz (Member # 11235) on :
 
Ok so im running pretty much a stock 5.0 I only have headers cold air intake & 70 mm throttle body if I use Iridium spark plugs will it make a difference??
 
Posted by 50DADDY (Member # 3076) on :
 
Nope.It might misfire more,lol.Nothing beats good old cheap copper core plugs.
 
Posted by blown95svt (Member # 8893) on :
 
quote:
Originally posted by CarlosLaz:
Ok so im running pretty much a stock 5.0 I only have headers cold air intake & 70 mm throttle body if I use Iridium spark plugs will it make a difference??
think of the iridium plug as a glow plug. it will cause pre detonation "pinging"
 
Posted by 209 FIVE.O (Member # 9959) on :
 
quote:
Originally posted by 50DADDY:
Nope.It might misfire more,lol.Nothing beats good old cheap copper core plugs.
+1 go with motorcraft or autolite copper core
 
Posted by SydewayzStan (Member # 10217) on :
 
they'll work, just not as good. the only thing good about them is they last a LONG time. but yes coppers are the best just change them every 3-5k
 
Posted by FivePTSlow (Member # 7682) on :
 
I tried bosch platinums once in one of my old 5.0's it ran like crap with them. I'm sure iridiums would be even worse.
 
Posted by Venomousnotch (Member # 8695) on :
 
quote:
Originally posted by 209 FIVE.O:
quote:
Originally posted by 50DADDY:
Nope.It might misfire more,lol.Nothing beats good old cheap copper core plugs.
+1 go with motorcraft or autolite copper core
+2 What he said..That's the best way to go.. [patriot]
 
Posted by nitrous_bob (Member # 77) on :
 
quote:
Originally posted by 50DADDY:
Nope.It might misfire more,lol.Nothing beats good old cheap copper core plugs.
100% truth

only ever use stock coppers, i gap smaller than normal too... like .042" but i spray
 




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