Spark plugs and go!

['68cuda416]

Well, you sound like an Arrogant *** to me Dude. There are ALOT of People here that HAVE real World Experience, without relying on hired "Badasses".
How'd that work in high school for ya?

Because they have proven themselves I would gladly take advice from GTX JOHN or RAT BASTID.......but i'm sorry if you think i'm an arrogant asshole because I won't take ridiculous advice from just any Joe Blow Home Builder

 

[thesiren74]

There is absolutely a difference. Just did this experiment 2 weekends ago.

Same cylinder. Same jets. Same air. Same fuel. Same RPM launch. Same oil temp.

The only difference was the plugs. The one on the left were regular Autolite 3923. The right one was an AR3923. Same series. Huge difference in A/F. The AR3923 was a big improvement.

View attachment 1715996922

Same brand, he's telling everything is inferior to ngk and everyone will gain so much just by changing to ngk v power yeah my 9.4.1 engine isn't going to go 12.48 to 12.18 with spark plugs.

 

[RustyRatRod]

There is absolutely a difference. Just did this experiment 2 weekends ago.

Same cylinder. Same jets. Same air. Same fuel. Same RPM launch. Same oil temp.

The only difference was the plugs. The one on the left were regular Autolite 3923. The right one was an AR3923. Same series. Huge difference in A/F. The AR3923 was a big improvement.

View attachment 1715996922

Well of course there's a difference with race plugs. That's not what I was talking about.

 

[Just Send It]

Same brand, he's telling everything is inferior to ngk and everyone will gain so much just by changing to ngk v power yeah my 9.4.1 engine isn't going to go 12.48 to 12.18 with spark plugs.

Just like everything else, it depends on the application. This motor is 11.5:1 NA, but when I switch to Nitrous I do use NGK plugs. I've found they won't blow the flame out under a large shot.

Reading plugs is a hobby of mine and NGK does make a quality product. Autolites are good too. Just depends. I can't say that I've tried every plug on the market, but I do tend to build higher compression motors so I stay in the colder side

 

['68cuda416]

Well of course there's a difference with race plugs. That's not what I was talking about.

Don't trip on your laces, lol

 

[thesiren74]

Just like everything else, it depends on the application. This motor is 11.5:1 NA, but when I switch to Nitrous I do use NGK plugs. I've found they won't blow the flame out under a large shot.

Reading plugs is a hobby of mine and NGK does make a quality product. Autolites are good too. Just depends. I can't say that I've tried every plug on the market, but I do tend to build higher compression motors so I stay in the colder side

Exactly my point! He ran 14.1 Hemis and wedges way different than a 9-10.1 engine.

 

[RustyRatRod]

Don't trip on your laces, lol

I'm wearin crocs.

 

[MidnightSwinger]

They're all about the same, regardless of what some will try to tell you. The only exceptions are the snake oil stuff like Splitfire, E3 and "those" kind of "plugs".

Most of the builds in the old mopar magazines don’t even mention spark plugs in the ignition section.

I like to run whatever gives me a smooth idle and doesn’t cost a fortune. NGK coppers are my go to but I’m trying the Champions on my 383 based on what I’ve read on here and Bigblockdart.

 

['68cuda416]

I'm wearin crocs.

My brother swears by them

 

[thesiren74]

I’ve always run NGK in slants,small blocks and imports. A lot of

Most of the builds in the old mopar magazines don’t even mention spark plugs in the ignition section.

I like to run whatever gives me a smooth idle and doesn’t cost a fortune. NGK coppers are my go to but I’m trying the Champions on my 383 based on what I’ve read on here and Bigblockdart.

I've been using rc12yc for 2yrs and plugs look great and the runs great.

 

[RustyRatRod]

I’ve always run NGK in slants,small blocks and imports. A lot of

Most of the builds in the old mopar magazines don’t even mention spark plugs in the ignition section.

I like to run whatever gives me a smooth idle and doesn’t cost a fortune. NGK coppers are my go to but I’m trying the Champions on my 383 based on what I’ve read on here and Bigblockdart.

I don't even remember what I have in the slant 6. I THINK they were Autolites, but I'm not sure. On the street with stock or close to stock it really doesn't matter a whole lot as long as the heat range is right.

 

[RustyRatRod]

I've been using rc12yc for 2yrs and plugs look great and the runs great.

Exactly. Just use what works good for you.

 

[MidnightSwinger]

I've been using rc12yc for 2yrs and plugs look great and the runs great.

That’s good to hear because I am running headers and I don’t want to swap them out!

 

[mopowers]

Why can't people just drop their opinion and leave? "My plugs are better than yours."

 

[RustyRatRod]

Why can't people just drop their opinion and leave? "My plugs are better than yours."

Beats the hell outta me. There's "run what works" and then "If you don't run what I say, you're a blithering idiot". I mean seriously, it's spark plugs. It's not worth insulting people over.

 

['68cuda416]

Beats the hell outta me. There's "run what works" and then "If you don't run what I say, you're a blithering idiot". I mean seriously, it's spark plugs. It's not worth insulting people over.

I will have to go back and reread your responses……I never saw where you stated a brand I could have swore you said they are all the same and run whatever is cheapest…….probably my mistake

 

[fishmens67]

NGK for your car, boat and bike.
Champion for your lawnmower and rototiller.

 

[Ironracer]

NGK for your car, boat and bike.
Champion for your lawnmower and rototiller.

I tried the ngks back in early 90. I didn't like em. They didn't last. Now champion as a mower plug? That's about right! If that... lol

 

[MOPAROFFICIAL]

There are plenty of "good enough for me" posts in this... and then there are some objective/intelligent posts ones too.

I used to use champion and I had the insulators come loose and fall out ...needless to say I quit using Champions after that. That was in the late 90s.
Ive used auto'blights ...they work, that's all I'll say about them.
I prefer NGK v power and the iridium's.
Like a champion...they read easy, they last too and dont seep cyl psi/exh.
Like a plug wire... plugs come in many materials copper,platinum, iridium, etc...and have resistor or no resistor.
If you have a stereo and don't have high frequency filters for it you probably want a resistor plug so that you don't get noise but if you race it are solely into performance and don't give a **** about stereo or static in your system you will run a non-resistor plug and it will make a big difference just like a set of solid core wires that have zero resistance. It will spark with more energy. Lol Most guys are running around with 8mm Street wires on their race cars ...while other guys aren't, but typically ...all of us on the street are using these ..what MSD SC wires? and they all have about 50 to 75 ohms of resistance ...resistance nonetheless... some of us use Taylor wires or even Summit wires and those are in the low hundreds for resistance. I used to use 25 dollar a accel 7mm super stock wires.

When you're talking spark plugs it's all relative, Factory equipment is now four prong iridium type stuff that lasts 100,000 miles so are the resistance differences? Yes. Are there heat range differences? Yes. Are there better conductor materials than others? Yes. So are there better spark plugs than others? YES!!

 

[Demonx2]

Timely discussion for me! I posted (72 Demon Follies) an issue I had at the track with my avatar car this past Sunday. 408, 10.5 CR, Eddy RPM heads, MSD 6AL. Car runs 7.0's/11-teens.

Mph seemed slower than I thought it should be after 1st run in the DA air of 73. Pulled the Champion RC12YC plugs and found #3 &#5 like this:

No center electrode! All others were ok.

I knew I might be a tad lean but not lean enough to do that! And there was no nibbling or pecking on the ground strap so it's not like it was detonation or anything. And #3 has the center electrode smooth and even with the porcelain. #5 electrode is sunken into the porcelain about 1/8". Pics aren't great but reading the ground strap on all the plugs showed the timing to be just about spot on.

Changed out the bad plugs and made additional passes. Set a new Personal Best of 7.01 in the 1/8th so the motor apparently was fine.

Fast forward a couple days. Through some connections, I was able to get the pics back to Champion and learned the design is an older design and the sealing mechanisms have changed quite a bit since that plug was designed. The "center electrode pushback" like I experienced is a possible failure mode of the design caused by high cyl pressures. I doubt mine is excessively high but apparently was high enough to do this. And I'm sure many folks have run them forever without issue. I'm just relaying what occurred. The recommendation was to use a modern design like RC12WYPB4 (#9201) in place of the RC12YC.

So I'm putting new plugs in it this week. And given the big plug gap the MSD box was apparently pushing through, I'll check my plug wires carefully to make sure no breakdown occurred. Live and learn!!

 

[Fast340cuda]

I used to run champion in all of my 340’s and FWD turbo Shelby’s. About 15 years ago I had several champions on different occasions lose the insulator tip near the electrode. I made the switch to NGK’s shortly after and haven’t had any issues since.

 

[MOPAROFFICIAL]

Well would you look at that right after I tell my story of my Champions failing and the insulators coming loose.... post above me guy had his electrodes push in on his champions. Backs up that they fail and that they are pieces of **** and if anybody has success with them.. it's purely luck. Theyxre only good for holding head gaskets in place for chamber shaping/deshrouding... or for making a fitting to pressurize the cyl for a spring change.

 

[MidnightSwinger]

Well would you look at that right after I tell my story of my Champions failing and the insulators coming loose.... post above me guy had his electrodes push in on his champions. Backs up that they fail and that they are pieces of **** and if anybody has success with them.. it's purely luck. The are only good for holding head gaskets in place for chamber shaping/deshrouding.

That bad huh? I’m gonna just get some NGK’s then. I’ve never had an issue like that with NGK.

 

[MOPAROFFICIAL]

That bad huh? I’m gonna just get some NGK’s then. I’ve never had an issue like that with NGK.

Champions are the only plugs that I've had Fall Apart. Auto lights are the only plugs that I've had seep cylinder pressure and show it by black sit along the porcelain where it meets the the metal body. Only Champions that have not failed were ones I bought for Volvos...
But I switched to bosch long ago.
NGK is a really good plug.

 

[toolmanmike]

Well would you look at that right after I tell my story of my Champions failing and the insulators coming loose.... post above me guy had his electrodes push in on his champions. Backs up that they fail and that they are pieces of **** and if anybody has success with them.. it's purely luck. Theyxre only good for holding head gaskets in place for chamber shaping/deshrouding... or for making a fitting to pressurize the cyl for a spring change.

I swapped out my Autolites for Champions 10+ years ago. They are sill in there sparking away. It time for a tune up next spring and Champions will go back in. Wish me luck.