Changing Spark Plugs

[LaserRed01GT]

Also why does the NGK plug or one of its type perfered over the stock plantium type plug or an normal plug i guess i could say, does it have something to do with the spark burn?? and how it affects performance??

I honestly don't buy into most of the new spark plug gimmicks out there, but I believe the groove that is manufactured into the NGK center electrode tip really makes a big difference.

Everybody just assumes that it is an explosion that pushes the piston down on ignition. Well it's not an explosion at all, it's a controlled burn. If you do a search on the internet, you can find some high speed video showing the spark and then the flame kernel as it slowly develops and turns into a sweeping and expanding flame front.

The groove in center electrode tip forces the actual spark to the outer edge of the ground electrode. This puts the spark closer to the a/f mixture and promotes the flame kernel growth, all of which make more power. And trust me, you will feel a difference.

 

[kramer03gt]

so this is all starting to make some sense.. so then i guess why did ford put the platinum plugs in to the car to begin with?? rather than using something like the NGK's, was it due to the longevity of things??

 

[LaserRed01GT]

so this is all starting to make some sense.. so then i guess why did ford put the platinum plugs in to the car to begin with?? rather than using something like the NGK's, was it due to the longevity of things??

Exactly. The only thing platinum plugs are good for is longevity. A platinum plug in our motors will actually perform worse than a standard plug.

Now Iridiums are a different story. They will perform well to, but until the price comes down a little, I will just stick to the NGK's for now.

 

[kramer03gt]

LaserRed01GT, Thanks for your help and insight!!! all my questions were answered!! I have found some good documents for reference, now its just waiting until the NGK's get here and playing around with them!

 

[kramer03gt]

So i have been doing a little digging, what are the big advantages with the Iridium plugs?? i just found out that was what was ordered for me?? 50 bucks for a set.. ha...