Copper VS Platinum Spark Plugs

noyolastang · Jun 23, 2004

Pros/Cons for both?

Carl · Jun 23, 2004

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 · Jun 23, 2004

i like the iridium plugs (denso) even though they are verry pricey.

www.densoiridium.com

ProCharger GT · Jun 23, 2004

NGK TR6 are the way to go

RedGTvert · Jun 23, 2004

ProCharger GT said:
NGK TR6 are the way to go

What makes them better then all the others?

ProCharger GT · Jun 23, 2004

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

noyolastang · Jun 23, 2004

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 · Jun 24, 2004

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.

stangchef · Jun 24, 2004

Unless you have a s/c or N2O run the motorcrafts that came with it...they are already plantinum and no need to spend more money on something that isnt gonna to increase your performance....unless your running screamin demon or MSD coil packs and wires...then its your choice!

RAS96GT · Jun 24, 2004

stangchef said:
Unless you have a s/c or N2O run the motorcrafts that came with it...they are already plantinum and no need to spend more money on something that isnt gonna to increase your performance....unless your running screamin demon or MSD coil packs and wires...then its your choice!

Autolites are platinum as well and they are cheaper than Motorcraft.

bemol · Jun 24, 2004

RAS96GT said:
Autolites are platinum as well and they are cheaper than Motorcraft.

I wonder if its good to fight detonation with a cooler platinum plug. Everyone suggests copper, is platinum that bad?

Cheers
Dan

GoBabyVroommm · Jun 24, 2004

How much are the NGK plugs?

RAS96GT · Jun 24, 2004

bemol said:
I wonder if its good to fight detonation with a cooler platinum plug. Everyone suggests copper, is platinum that bad?

Cheers
Dan

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 · Jun 24, 2004

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.

Silver2003Cobra · Jun 24, 2004

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..

RedGTvert · Jun 24, 2004

ProCharger GT said:
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

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 · Jun 25, 2004

Silver2003Cobra said:
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..

Most intelligent post I've seen in this thread! And welcome to StangNet!!!

GoBabyVroommm · Jun 25, 2004

Great no one answered my question.

noyolastang · Jun 25, 2004

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

bemol · Jun 26, 2004

What about Iridium, and whats the 'performance' difference between single platinum and double platinum anyway?

Dan

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