Better spark plugs and wires

[Woot]

Whats the deal with premium or high-performance spark plugs and wires? do they give you a performance boost over stock ones?, or engine-damage?.

[TrdSpeed140]

you realize that 9th gen corollas don't have spark plug wires, right?

[Woot]

Originally Posted by TrdSpeed140

you realize that 9th gen corollas don't have spark plug wires, right?

No, as a matter of fact i don't

[mikered30]

Stick with Denso or NGK iridium plugs.

[JasonA]

Our cars have C.O.P. ignition (coil on plug), so there are no wires. And the engine already has a very premium spark plug (iridium). It'd be best to stick with that. They shouldn't need changing until well into the 100k mile mark.

[TrdSpeed140]

Originally Posted by JasonA

Our cars have C.O.P. ignition (coil on plug), so there are no wires. And the engine already has a very premium spark plug (iridium). It'd be best to stick with that. They shouldn't need changing until well into the 100k mile mark.

X2

[NMGeorge]

Although, there is some concern with leaving a plug in your aluminum head for that long... Some recommend breaking them loose and torque them back down, others suggest a lite amount of anti-seize on the threads.

[PhatRoyale]

Originally Posted by mikered30

Stick with Denso or NGK iridium plugs.

[JasonA]

Originally Posted by NMGeorge

Although, there is some concern with leaving a plug in your aluminum head for that long... Some recommend breaking them loose and torque them back down, others suggest a lite amount of anti-seize on the threads.

A GM powertrain engineer friend of mine suggested removing the plugs with an impact gun. I thought he was crazy, but he said that the hammering action of the impact gun will break any corrosion on the threads and remove the plugs with ease.

So it was with a bit of trepidation that I took the impact gun to the original spark plugs on my '97 Cadillac Seville, with about 145,000 miles on the plugs when I removed them. I was pleasantly surprised when all 8 plugs zipped right out of the heads. The impact gun (I have an electric one) hammered on some of the plugs longer than others, but all came out with ease. The new ones went back in, torqued to spec, and all was well.

This engineer said that removing them by hand applies a relatively slow, twisting action on the threads that, if stuck, will strip them out easier than a gun. Or, said another way, if you strip the threads with the impact gun, you never had a chance doing it by hand.

Take it for what it's worth...but with experience with 8 plugs almost 150,000 miles old, it worked like champ for me.

[05_Echo]

Originally Posted by NMGeorge

Although, there is some concern with leaving a plug in your aluminum head for that long... Some recommend breaking them loose and torque them back down, others suggest a lite amount of anti-seize on the threads.

In my 06 Corolla I changed them at 300,000 km's and they came out with no problem's at all. Still looked good too..

[CJCride]

Originally Posted by 05_Echo

In my 06 Corolla I changed them at 300,000 km's and they came out with no problem's at all. Still looked good too..

Your 2006 had 300,000 Kilometers?

Typo?

[camryvibe]

Originally Posted by JasonA

So it was with a bit of trepidation that I took the impact gun to the original spark plugs on my '97 Cadillac Seville, with about 145,000 miles on the plugs when I removed them. I was pleasantly surprised when all 8 plugs zipped right out of the heads. The impact gun (I have an electric one) hammered on some of the plugs longer than others, but all came out with ease.

Recently replaced the original plugs in our '97 Camry, also with about 150,000 miles. They came out very easily as well - just a gentle turn with my hand socket wrench. Which is about what I expected.

[FinalGear]

Originally Posted by NMGeorge

others suggest a lite amount of anti-seize on the threads.