What Champion Plug ru Using in you 340?

[Michael Siple]

I must be an old fart. I remember paying $.79 for N9Y plugs and could buy them on sale for $.50. I still have a MOPAR set of plugs that are still in the box. Saving for a rainy day.

Not too long ago I found 32 of them on ebay -$0.99 per - made me feel good.

 

[Bewy]

Turk,
Just shows how dumb/ignorant you are if see nothing wrong with post #66. Easier starts with copper plugs comes from the bettrer heat conductivity, NOT because copper is softer, which is what the poster of post ##66 was suggesting.

 

[Newbomb Turk]

Turk.
Post #66 is BS. And much of what you say. The link below comes from a successful drag racer from the 80s & 90s. He wrote two automotive books & produced a video cassette on porting.

View attachment 1716490911

I’ll say this. I NEVER EVER said the ELECTRODE is copper. EVER.

If you had a clue you’d know what I’m saying is correct and that’s this:

The material for the CENTER WIRE is not the same comparing Champion, NGK and Autolite plugs in that order, Champion being the softest and autolite the hardest.

Get it yet?

That’s why I made 13 pulls yesterday on an engine and I didn’t spark mark a single plug.

I know for a FACT that it takes about 9-10 pulls on my ignition to spark mark an NGK and 5-6 pulls to see it on a Champion plug.

Spark mark is one way (just ONE so you don’t get confused) to evaluate ignition system power.

It’s well known that a plug with a center wire that is softer will fire more often under suboptimal chamber conditions than a plug with a harder center wire.

Which is why guys ***** about Champions wearing out so fast. They are the softest of the three brands we are discussing.

Which was the whole point of my talking about it. Most guys don’t use enough ignition. Since it’s damned expensive to data log misfires very few do it. And misfires occur far more than most people realize.

But the information is out there.

Once again, I never said the center wire is copper. And you know it.

I’ll say this again because I know you.

I don’t suggest to anyone to use rare earth metal electrodes. There is a reason they are made in small diameter and it’s because it’s so hard it’s hard to get them to light.

I wouldn’t have said a word in this thread except the OP says he’s 12:1 and I knew there’d be guys who either don’t read the whole thread, or clowns like you who skip most posts but find mine and you start making **** up.

At 12:1, and I assume pump gas because the OP didn’t say otherwise his tune up window is far tighter than someone at 9:1 or even 10:1.

Look at how many guys dug out their FSM’s and catalogs “proving” that a 12 or 9 Champion was the plug to use.

They’d be wrong.

So once again you are talking right out of your ***.

Edit: if you notice in post 66 I didn’t say a word. If you want to ***** about my post try 71. I wasn’t clear in that because I said the NGK was also a copper core, which the plug I’m talking about does. But the core material has ZERO effect on the center electrode and what it’s made of. We all KNOW the CORE is copper. Not the center wire and ground strap.