Just wondering what the difference between NGK copper and NGK cold temp copper. I know that colds are used for boosted aplications due to the colder charge temps but what exactly is different about the cold temp plug that makes it more suitable for boosted aplications?

 

the only reason i ask is because partstrain sent me the wrong plugs but charged me for the regular copper NGK and unless i will notice a drop in performance i am thinking about using them.

 

anyone know?

 

If they are colder heat range plugs then stock, they may suffer a carbon build-up problem and fail to spark after some time.

When it comes to piston engines:
Too cold = carbon build-up
Good = light brown discolouration with no serious wear
Too hot = electrode burn-out

 

is the plug itself creating less active spark to prevent detonation or somthing? is that why there is sometimes carbon buildup because the fuel is not being completely burned?

 

anyone know if it is because they generate less spark than a standard temp plug to prevent detonation? why the carbon build up?

 

The temperature range of the plug is how much heat it retains at the electrode. The plug needs to stay hot enough to keep combustion products from sticking to it, but not so hot as to burn itself out.

Turbo cars use colder plugs due to higher combustion temperatures and to avoid detonation. You don't have to worry about that and should keep factory range plugs and gap.

 

yeah, i know i don't have to worry. i am boosting likely at the end of the summer and into the fall before i put her away for the winter so ill just pick up a new set and save these untill then. thanks for the feedback.

 

I also think the gap needs to be smaller. I'm not sure about pre-gapped plugs but I've read .30 for turbo cold spark plugs. I'm going to have to ask shmoo since I haven't been using cold plugs and he's my turbo savior.

 

There is no such thing as a "pre-gapped" plug. Many are advertised that way, but in my experience, none have even been close to true spec.

Example: NGK "pre-gapped" plugs for 3000GT's come set to .045". Factory spec is .038-.042". I have noticed the gaps being similarly far off in Civic and Integra applications.