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champion has not made j11y's, superseeded by RJ12YC

all have resistors now.

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where?

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Yep Champions are junk, thats why they were the OE plug when these cars were new. I think your problem is running a resistor plug in that motor in the first place. Find a non-resistor plug in the heat range you want and try that. I run old NOS J11Y Champions and have never had a problem. But you pick any manufacture you want and find out for yourself which one you like because anytime somebody asks about spark plugs on here you get a different answer. Its about like asking which beer is the best.

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Yep Champions are junk, thats why they were the OE plug when these cars were new. I think your problem is running a resistor plug in that motor in the first place. Find a non-resistor plug in the heat range you want and try that. I run old NOS J11Y Champions and have never had a problem. But you pick any manufacture you want and find out for yourself which one you like because anytime somebody asks about spark plugs on here you get a different answer. Its about like asking which beer is the best.

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the champions that were installed in the 60's/70's are a much better plug than the new champions , never had good luck running that rj12 in anything either .

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Probably right John, but I still got 4 sets of the vintage NOS J11Y's left.

But I still have never seen anybody have any real luck running a resistor plug on a beefed up mill running alot squeeze and a hot ignition. Seems like whatever brand they run the stupid resistors burn out of them with quick.

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Yep Champions are junk, thats why they were the OE plug when these cars were new. I think your problem is running a resistor plug in that motor in the first place. Find a non-resistor plug in the heat range you want and try that. I run old NOS J11Y Champions and have never had a problem. But you pick any manufacture you want and find out for yourself which one you like because anytime somebody asks about spark plugs on here you get a different answer. Its about like asking which beer is the best.

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the champions that were installed in the 60's/70's are a much better plug than the new champions , never had good luck running that rj12 in anything either .

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Probably right John, but I still got 4 sets of the vintage NOS J11Y's left.

But I still have never seen anybody have any real luck running a resistor plug on a beefed up mill running alot squeeze and a hot ignition. Seems like whatever brand they run the stupid resistors burn out of them with quick.

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I swapped from Champs to Autolites a few years back. I really didn't notice much of a difference except that the Auto's seem to get rustier quicker. People swear by them.

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My favorate is the NGK V-Power, and they are fairly inexpensive too.

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Tried them all. I will use nothing else but NGK's

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What would be the best plug to run in a 340 with 11.5:1 and solid lift w/mallory hyfire VI-AL ignition?

Just getting ready to fire it up and want to make sure I get the best plug. Also isn't the gap supposed to be .040-.045 with the hot ignition modules?

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I switched from Champion N9YC to NGK BP6ES on my fairly stout 360 and there was a substantial improvement. I'm also running an MSD 6AL and IIRC MSD specifically recommends AGAINST running platinum plugs. I'm not sure if that is true with any other aftermarket ignition systems.

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I would'nt give you a nickel for a new
champion plug..

Use AutoLite.... or AC Delco...

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i wonder which has more ZDDP (zinc) content.. champions or autolites?

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i wonder which has more ZDDP (zinc) content.. champions or autolites?

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And everybody knows Budweiser in the bottle is the best beer out there.

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Thanks Bob,Do I have to cut the strap back?

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I also like NGK or Autolite racing with the strap cut back.

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i wonder which has more ZDDP (zinc) content.. champions or autolites?

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And everybody knows Budweiser in the bottle is the best beer out there.

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the best beer in the world only when its brewed in canada eh...

for the REST of you as far as champions suck(ing), if your engine isn't up to par tune wise,
yah.. champions are not very forgiving.

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i wonder which has more ZDDP (zinc) content.. champions or autolites?

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And everybody knows Budweiser in the bottle is the best beer out there.

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the best beer in the world only when its brewed in canada eh...

for the REST of you as far as champions suck(ing), if your engine isn't up to par tune wise,
yah.. champions are not very forgiving.

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Ok well if we include our Canadian friends in this, "real" Lablat's Blue is mighty tasty too.

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Yep Champions are junk, thats why they were the OE plug when these cars were new. I think your problem is running a resistor plug in that motor in the first place. Find a non-resistor plug in the heat range you want and try that. I run old NOS J11Y Champions and have never had a problem. But you pick any manufacture you want and find out for yourself which one you like because anytime somebody asks about spark plugs on here you get a different answer. Its about like asking which beer is the best.

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the champions that were installed in the 60's/70's are a much better plug than the new champions , never had good luck running that rj12 in anything either .

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My GTX with a fresh 440, about 9.5:1 compression, stock everything except the Mopar 272 cam fouled the RJ12YCs like crazy. With the timing set at 6 degrees or so initial I think it would have been fine, but as soon as I advanced it to about 12 or 13 you could visually see the dark smoke start to pour out of the exhaust pipes. I think theyre probably good if you tune your car to stock specs/

The Champions I put in my 273 to replaced the fouled Autolites in it fouled up within two days. I changed the points, condensor, rotor, cap, adjusted the timing to a tad more intial than stock. Pulled the plugs two days later to change them (I had been driving the car) and they looked like I just pulled them fresh out of the box. Tune them to stock specs in a stockish engine and the Champions are probably perfect. Thats why the factory liked them.

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After reading all of these posts I would like to add one overview. If you are fouling new plugs there is something wrong other than the plug brand. All plug manus make good products. I prefer what I posted for a couple of reasons but none are because I don't think Champion makes a good plug. If you are fouling your plugs on a mechanically sound motor you are either using the wrong heat range or you have tune up problems. -Bob

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Exactly my point before

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hi everyone been runing the champions rj12yc which edelbrock recomends but they're getting a rust color on them my specs on my engine are 440 .55 over 11 1/2-1 bme aluminum rods .620 solid roller 6 barrel set up with orange box ignition msd coil and wires never had this color before any help
thanks guys

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After reading all of these posts I would like to add one overview. If you are fouling new plugs there is something wrong other than the plug brand. ....If you are fouling your plugs on a mechanically sound motor you are either using the wrong heat range or you have tune up problems. -Bob

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i said that earlier in this STUPID thread. perhaps the masses will listen to you.

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I can't believe this thread... just goes to show...there's those who know...those who think they know...and those who don't even suspect.
Come on you guys...really

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hi everyone been runing the champions rj12yc which edelbrock recomends but they're getting a rust color on them my specs on my engine are 440 .55 over 11 1/2-1 bme aluminum rods .620 solid roller 6 barrel set up with orange box ignition msd coil and wires never had this color before any help
thanks guys

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If you are saying you have a 11.5-1 motor. That is too hot of a plug. You should be in the 9 range. The rust spots are from detontation.

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I have not had problems using Champion plugs in many applications. However, I have not been able to run that plug (too hot)in either of my two 10:1 CR big blocks.

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well add some ACETONE and it will cure your plug problems...
LOL!!!!!

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really- I prefer running the Champ surface gap plugs-like the ones for marine applications alsop same upgrades for the vipers but short reach.
oh and never run a resirtor plug in a high comp engine, as the cyl press gets higher the spark has more resistance to jump the gap-so as the gap resistance increases so does the series resistance of the plugs resistor and wire resistance to a point ehere you can loose 1/2 your spark power in the wire and plug alone.
simple balanced bridge ohm law with a littke dielectric constant throen in

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of which the masses do not seem to comprehend that fact. they spend a billion dollars on
parts, a fail to see the suttle nuances of what makes a plug fire under certain conditions.

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champion has not made j11y's, superseeded by RJ12YC

all have resistors now.

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I would'nt give you a nickel for a new
champion plug..

Use AutoLite.... or AC Delco...

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Funny, I wouldn't give you a penny for a set of autolites. Never had any luck with them in a 2.5L, 3.9L, 318, 360, or 440. I'll stick with the Champions.

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Autolites won't even last 1 week in my 383. Thought I would save a buck, but back to champions it was. Maybee the manufacture did know something....

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This reply is freakin hilarious:

champion has not made j11y's, superseeded by RJ12YC

all have resistors now.






um.. wrong. you can still get non-resistor champions all-day-long.















where?





earth




no wonder autozone doesnt have them.

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hard to find but you still can find them down here in Venezuela... in fact what is really imposible is try to get them with resistor.

about plug itself. I have no claim with them... just one failed in 8 years. maybe better performance in others, yes, but they work just fine on any street car as they were mounted from factory purpuose.