Which ever one reliably fires the mixture and gives the best life. Autolite, NGK, ND, many others...

 

I generally try to avoid Champion plugs, except for old OMC outboards. For whatever reason, they like Champs.

I personally like NGK's but have no issues with Autolite or Denso.

 

E3. You're welcome.

 

LOL That's supposed to be sarcasm right?

NGK's for me.

 

Autolite racing plugs

 

If your running angled spark plug heads the Accel shorty header plugs might be your friend.

 

Comes down to the cars use.

Old AC Delco's worked good in my old combo, and when I made some changes to make a little more power, I was running Autolite AR series plugs.

 

I run AC plugs in all my iron head stuff, (Chevy SB). Have to run a shorty Accel on 1 cylinder on my street car as headers are too close and burn the boot. Old ACs were shorter and weren't a problem. Run NGK on my Dart aluminum heads but I'm going to try ACs in it when it goes back together.

 

E3's are nothing more than a gimmick and pure junk.

 

the best plug is the right type of plug be it projected or non projected tip and the correct heat range. The name on the porcelain means nothing, they all work as designed and intended and there is no HP to be gained from one brand to another.

 

If you can read a certain brand plug better, (NGK), because of the coating that makes it easier to see, then there could be horsepower in that plug if you make the correct tuning change.

 

many here can't read a time slip no mind a spark plug. Again, there is no HP to be gained from one brand to another.

 

 

i prefer NGK when tuning because of how the coating burns.

also the NGK racing plugs can be bought from RockAuto very reasonably, which is a factor when putting fresh plugs in when making tuning changes.

 

X's 2

I can't remember even not using NGK's & I have decades of seat time. These high powered ignitions today will basically lite anything these days.

 

Looks like forums still got problems. Checked on Honks reply on this thread and it's not to be found.
Hey we have page two now!

 

I prefer to run an American produced spark plug. I believe in keeping Americans employed and keeping our economy strong.

 

Name an American company that makes all their spark plugs in the USA and what city they are made, please. I want to use USA products also. But NGK does make good racing plugs.

 

Duck Duck Go is your friend.

 

I prefer to run an American produced spark plug. I believe in keeping Americans employed and keeping our economy strong.

There is an NGK spark plug plant here in West Virginia. It's in Sissonville... about an hour from where I live. I know people who work there.

 

Friend used to use Champion in his 440, don't remember the story but they were all bad. They were the racing plug and when he go in touch with the they tried to blow him off. He told them to look at their stock and sure enough the ones they had were bad too. Wish I could remember what was wrong but you could see it with your naked eye. They were being made in Mexico. He got a whole bunch of free ones for pointing it out to them.

 

The old guy that taught me how to cut cut down ground electrodes said NGK had the best metal in their ground electrodes as far as shaping them goes.

In a pinch I'll do out of the box Autolites but usually, I buy 4 or 5 sets of NGK's at a time and get to whittling on them with a 1" belt sander.

I asked a couple of the crew guys in a Pro Stock pit if they would mind if I looked at an old spark plug just for the hell of it. The guy was cool about letting me look, those guys really do a number on them.

 

^^^^^^ care to explain what "do a number on them" means a little more? Cheers in advance.....

 

They narrow and shorten the ground electrode considerably.

 

NGKs are 1.40 at Rock Auto

 

are you talking narrow like the electrode on an irridium plug? Or?

 

Kind of, look at the ground electrode on an Autolite race plug and the strap is shorter.

Some race teams narrow it as well as give it a cut back on the top. Hard to say what it's worth in HP on a dyno.

 

Remember when NGK race plugs had a gold coating? Then they went to the silver coating that is not as easy to read as the gold. I wonder if that plating change was a heavy metals environmental deal or if it was because they started making them in another country?

 

https://www.briskusa.com

We had a batch of those gold NGKs, kept fouling. We suspect they were counterfeit!

 

Looks like YB took a shit, but the gold plating may well have had cadmium or chromium in it.