spark plugs
 

I have a 428 with Edelbrock heads, Holley, ProCharger and HEI distributor housing with just the magnetic pickup in it. I use an external coil and control box. It's been 20 years since I put new plugs in it and even though it still runs good I decided to treat it to new plugs. I have always used Champion RC12YC on the street and RC9YC when I raced it. Now there are Platinum, Double Platinum, Iridium and ones with multiple electrodes. Do any of these new designs work enough better than what I have to make it worth changing? Or should I just stick with what worked in the past?

Stick with what works.

Stay away from Chumpions. I have had 2 fall apart on me. Electrode, gone, Engine ate it or spit it out.

Champion isn't the same company as before. Swallowed up by big business where profits override quality.

NGK would be your best bet.

If it ain't broke...

+2 NGK

Stick with a copper core plug.

NGK and Autolite would be my choices.

40 years ago i learnt a lot of troubleshooting an engine and when the smoke and dust settled with a new set of ACDelco replacing the Champion "race-plugs" finally engine ran like it should.
Lesson learnt, avoiding "tres hombres", Champion, Mallory and MrGasket since.......

Far as I'm concerned, Champion has ALWAYS been junk.

Champions had the most brittle porcelains in the industry thirty years ago when I swore I'd never buy another one. Far as I know, nothing has changed in that respect--but since I don't buy them, my experience is very limited.

Champion plugs ALSO had soft, fast-wearing electrodes back then, and so far as I know, they still do.

I liked Autolite until they went to China.

NGK and AC for me, now.

Feedback-Fuel-injected vehicles can benefit from long-life plugs using Platinum or Iridium. Carbureted vehicles are going to leave deposits on the plugs so there's no point to long-life plugs in that application. Copper-core plugs aren't so expensive, they may be worthwhile.

Multiple ground electrodes are a marketing gimmick.

For what it's worth, NGK is Japanese so I don't view that as any better than China.....But the plugs seem okay from my experience using them. I just don't care for their backwards heat range numbers that don't follow the industry standard.

I dropped ACdelco more than a decade ago when they started screwing with their heat ranges and dropped a bunch of part numbers in the process..


As far as origin I really don't think that means a whole hell of a lot anyway as pretty much all of it is made in some other country these days.

NGK is good stuff. They are the go-to plug in the BMW world which I am also involved with.

A lot of the Motorcraft plugs are made by NGK also.

Don't tell anyone from Japan that. They do not like China made products or the people.

+3 NGK. Standard plug in my Toyota and Honda but always an upgrade in my non Jap vehicles. I cross-reference and convert ALL of my small engines to NGK.

It's beginning to look like I will stay with the Champion plugs I am used to. I crossed the RC12YC number and came up with 11 different NGK numbers.

Try the BKR6E. I use them in my Edelbrocks. They make it in a 7 as well which is colder.
ETA:The 6 would replace your 12, the 7 your 9

I use NGK's exclusively.

Over the years have had a few go bad in chainsaws, but none have every cracked or fell apart.

Champions are a ticking time bomb. They crack if you stair at them too long and we had one fall apart and go thru an engine completely destroying it!

Same with Fram Oil filters, they should be avoided like the plague. Had one of those fail and I got the engine back here in the bed of the owners truck only to find NOTHING wrong with it other than he installed a Fram oil filter and it came apart and he lost oil pressure.......

LOL, What I mean by that is it's all foreign made crap these days. People like to complain about China or this or that when what ever else they buy is still made in some other foreign country somewhere, and not necessarily better quality all the time.

It's all a crap shoot these days. Buy something and try it, if it works, great, if it fails, buy somewhere else. Not a lot we can do about it, especially now. :noidea:

Yeah you'll get that with NGK. They offer an entire selection of heat ranges. One thing good I can say about them (other than they do work well, I'm not knocking them)

Where as other brands like ACDelco and Champion are very limited in heat ranges, and in the case of ACDelco some heat ranges that were previously available have disappeared.