Copper VS Platinum Spark Plugs
- Thread starter noyolastang
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Carl
Founding Member
You'll get a little more performance out of copper plugs, but they also wear out much quicker. With a supercharger you should run copper plugs and change them every 10,000 miles or so. However if you don't have a major power adder, then platinum will do you just fine and you won't have to change them nearly as often. So it really depends on what modifications you have as to what you need. Changing to a different style and heat range plug without having any modifications that require it will more than likely hurt you more than help you.
stang976
New Member
ProCharger GT
Member
ProCharger GT
Member
I have talked with a couple of race shops (Sean Hyland Motorsport and Houston Performance for instance) and they have said that these plugs are excellent for blower applications, SHM uses them on their race engines. They are a colder heat range for detonation control, and only cost $1.50 a plug. They've always treated me good
yeah I had problems with detonation, right now im about to switch to autolite 764's, which are copper...Ill post the results later 
RAS96GT
Founding Member
noyolastang said:yeah I had problems with detonation, right now im about to switch to autolite 764's, which are copper...Ill post the results later
Autolites come in Plats too. 764PP double platinum is what I have.
RAS96GT
Founding Member
GoBabyVroommm
Active Member
RAS96GT
Founding Member
bemol said:
Good question... I don't know about supercharger apps. All I know is that my setup is near stock and double plats came out of my car so double plats are going back in. I here that coppers are better performance maybe... but I don't want to change my plugs every year.
CTGrey02
Founding Member
Changing the plugs isnt bad.. 30 minutes.. Tops. It's good to check on them every now and then anyway, especially if your hard on the car or drag race it. Coppers get the job done. I'd rather replace em and know they're fresh and ready to go than have platinums in there that are made to just last and wonder about them.
copper is the best conductor of electricity we currently have( besides super conductors) the reason why manufacturers put platinum tipped plugs in new cars is so you don't have to change them except every 100K miles..
for the 4.6 OHC(especally the DOHC) the plugs are so easy to change, it makes sense to go to a copper plug and change them out every 10K or so miles..
for the 4.6 OHC(especally the DOHC) the plugs are so easy to change, it makes sense to go to a copper plug and change them out every 10K or so miles..
ProCharger GT said:
You seem to be a pretty good egg, so I'll be friendly.
There are numerous plugs that are 1 to 2 heat range's cooler if needed. Because these shops swear by them, does not make them the annointed King.
I have first hand experience with TR6's, and it was pitiful. My blown GT lost 30rwhp (dyno tested) with them. Changed to 764's and pickep up lost power.
I am not the only person to experience this. I am not sure if you know Edward Clark, who is part of SCT, he experienced the same thing.
All engines react differently with different combos, and in some cases the TR6's might work, so this becomes the plug of choice, others like mine, it was the msot awful thing I ever used.
Imagine going from 401rwhp to 429rwhp with just a change of plugs.
twogts4us
15 Year Member
Silver2003Cobra said:
Most intelligent post I've seen in this thread! And welcome to StangNet!!!
GoBabyVroommm
Active Member
Stang seems to be running better/smoother with 764's (as opposed to the motorcraft awsf 32e) and no more pinging, although I still need to test it at the 1/4 mile
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