Spark Plug brand

[gasti_ako]

Hi please let me know the spark plug that you use? Has anyone tried iridium?

[roushstage2]

Re: Spark Plug brand

Motorcraft and Autolite do the trick for me. If you are looking for a recommendation, best bet is to put up some information like year, make, model, engine, and modifications...

[BigLouie]

Re: Spark Plug brand

I'm a big Honda/Acura guy, so NGK and Nippendenso do it for me.

[Rick McDonough]

Re: Spark Plug brand

AC Delco or Autolite in my Camaro, and Bosch or NGK for the Honda and Toyota. I haven't heard of Iridium.

[Jokeman]

Re: Spark Plug brand

Ngk

[BlueZero]

Re: Spark Plug brand

Iridium isn't a brand but a metal. It's in the platinum family. It's the most corrosion resistant metal known. NGK makes an iridium plug, as I am sure others do.

Edit: Some interesting info I found on the subject...

"Iridium is a precious metal that is 6 times harder and 8 times stronger than platinum, it has a 1,200=F higher melting point than platinum and conducts electricity better. This makes it possible to create the finest wire center electrode ever. Prior till now, spark plug manufacturers have favored platinum for their long life or performance spark plugs due to its high melting point, also the technology did not exist to machine and bond iridium on a spark plug electrode(at least in a cost effective manner). Champion spark plugs had already made an iridium industrial application spark plug, but it still sells for over a hundred dollars per plug. Just now is the technology available to effectively use iridium in a spark plug for automotive applications. The strength, hardness and high melting point of iridium make it very well suited for a fine wire plug. The primary iridium plug manufacturers at this time are Denso with a 0.4mm center electrode and NGK with a 0.7mm center electrode. Both are the best performance plugs on the market for traditional automotive use and many racing applications."

[AeroCleanse]

Re: Spark Plug brand

Mt truck has Bosch Platinums, but I'd use NGK Iridiums now.

[Jeepster04]

Re: Spark Plug brand

Autolite double Platinums for me.

[new2detailing]

Re: Spark Plug brand

My Mitsubishi uses NKG Iridium plugs. I stick with Autolights for Fords. Iridium and Platinum help to avoid fouling and prolong the useful lifecycle of the plugs. However, several engine builder friends of mine stick to basic Champion/Autolight plugs for High HP applications. (Not sure of the logic, but they seem to know more than me about this). Just make sure that the plugs are gapped correctly and know that they will need to be changed more often if your vehicle does alot of stop/go driving.

[Sal329]

Re: Spark Plug brand

NGK or Autolite, depends on which car I am installing plugs into. I use copper plugs and replace at 20k.

[kellyinkc]

Re: Spark Plug brand

Since I have 2 Fords, I use Motorcraft only. I put in Bosch and had issues.
I prefer keep a car OEM no matter the make.

Kelly

[03mach1]

Re: Spark Plug brand

I run autolite in both my Fords. All plugs now a days are great.

[kellyinkc]

Re: Spark Plug brand

I run autolite in both my Fords. All plugs now a days are great.

They maybe, but putting Bosch double plats in a Vulcan V-6 is not good. I kept cracking the insulators until I went to the Taurus forums and found out that engine prefers Ford or Autolites. Just my experience.

Kelly

[PorscheGuy997]

Re: Spark Plug brand

I've heard some funny things about the more exotic spark plugs. Apparently, they cause problems in turbocharged cars.


For the Porsche, we used NGK and switched to Bosch. And then switched back to NGK. The engine seemed to run better with the NGK plugs.

[roushstage2]

Re: Spark Plug brand

Newer Fords really only like the Motorcraft plugs. Certain plugs cause issues with certain engines and modifications...