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Re: Are Champion RJ12YC's junk ?
[Re: postbody65]
#71867
06/16/08 01:06 PM
06/16/08 01:06 PM
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Joined: Jan 2007
Posts: 780
Woodinville, WA
Viol8r
super stock
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super stock
Joined: Jan 2007
Posts: 780
Woodinville, WA
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Quote:
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
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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Re: Are Champion RJ12YC's junk ?
[Re: BobR]
#71868
06/16/08 01:48 PM
06/16/08 01:48 PM
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Joined: Jan 2004
Posts: 803
Zebulon
Stationwagonguy
A Closet Buick Man
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A Closet Buick Man
Joined: Jan 2004
Posts: 803
Zebulon
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Just saving this thread to my favorites for future perusal, ignore me. :lol: I want to remember the autolites and give them a try, the Champions have been driving me insane in my 300 for years, they foul out perpetually, like a bad joke.
[image][/image]
Bob
SWG
'68 Chrysler Town & Country, 'Katy Jo'
'70 Chrysler 300 2-door
'78 Impala 2-door
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Re: Are Champion RJ12YC's junk ?
[Re: Viol8r]
#71869
06/16/08 07:01 PM
06/16/08 07:01 PM
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Joined: Feb 2005
Posts: 4,313
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,313
Prospect, PA
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Quote:
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.
 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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Re: Are Champion RJ12YC's junk ?
[Re: Stationwagonguy]
#71870
06/16/08 07:03 PM
06/16/08 07:03 PM
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Joined: Jan 2003
Posts: 3,575
The Netherlands
BigBlockMopar
master
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master
Joined: Jan 2003
Posts: 3,575
The Netherlands
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The only thing I do with Champion-plugs if I find them anywhere in my engines or garage, is to toss them as hard and far away as possible. I'm using Accel-plugs in every bigblock I have, 'cept the Eddy-headed stroker motor I run now, and never had any problems with them whatsoever. Heck, I can't even remember when the last time was I replaced a set of these yellow buggers in an engine anymore. Why Accels? Well next to their immaculate state of operation, the price is also right. I get them kinda for free. 
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Re: Are Champion RJ12YC's junk ?
#71871
06/16/08 07:44 PM
06/16/08 07:44 PM
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Joined: Jan 2003
Posts: 3,160
L.I. N.Y. Hemi Street
HemiGreg
master
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master
Joined: Jan 2003
Posts: 3,160
L.I. N.Y. Hemi Street
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well add some ACETONE and it will cure your plug problems... LOL!!!!!  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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Re: Are Champion RJ12YC's junk ?
[Re: HemiGreg]
#71872
06/16/08 11:17 PM
06/16/08 11:17 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
well add some ACETONE and it will cure your plug problems...
LOL!!!!!
Quote:
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
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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Re: Are Champion RJ12YC's junk ?
[Re: jcastle1]
#71876
06/17/08 11:17 PM
06/17/08 11:17 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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non-resistor plug has a solid core.
resitor plug has a wire coil and a gap inside it.
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Re: Are Champion RJ12YC's junk ?
[Re: 6T9Hemi]
#71878
06/18/08 10:21 AM
06/18/08 10:21 AM
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Joined: Jan 2003
Posts: 17,844
S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,844
S.E. Michigan
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Given the limited use of my GTX, several years ago when it had iron heads I used to be able to get at least two seasons of use out of a set of Champions and they were rj12yc. After that, I would change them because they were rusty on the outside, not because they weren't firing.
In the 13 or so years I ran that same iron head 440, I never had a problem with the spark plugs that I couldn't blame on fuel delivery or another part of the ignition.
Some applications might have some magic or voodoo in spark plug selection, but I've never seen it. A spark plug either fires properly every time, or it doesn't. It's either the right heat range, or it isn't.
Rich H.
Esse Quam Videri
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Re: Are Champion RJ12YC's junk ?
[Re: ZIPPY]
#71879
06/18/08 11:31 AM
06/18/08 11:31 AM
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Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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Just had a 2000 maxima today come in, it was shakeing at idle and kept sending cylinder 2 missfire and random misfire codes. Guy had recently done a tune-up and so I didn't look at the plugs first. I checked all the conectors and coils and such and nothing fixed it, finally I pulled the plugs and the center electrode on number 2 had fallen out of the plug! I quickly threw in an old plug laying around the shop and it was still shakeing but not sending misfire codes. Ordered a new set of NGKs and it was smoothe as glass.  The plugs he had put in just a few miles earlier were... drum roll... bosche platnium crap plugs! I have seen this exact scenario, except the electrode falling out, over and over and over. Some one will put in bosche plugs and make there car run worse. Never seen this problem from any other plugs.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Are Champion RJ12YC's junk ?
[Re: LL340Rag]
#71881
06/18/08 01:06 PM
06/18/08 01:06 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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I run RN12's IIRC in my 360, never had a problem with champion plugs, ever. my bike ran rougher with bosch's than it did with the OEM champions.
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Are Champion RJ12YC's junk ?
[Re: mark7171]
#71884
08/21/08 11:10 AM
08/21/08 11:10 AM
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Joined: Jan 2003
Posts: 2,640
Port Reading, NJ
roadrunner7070
master
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master
Joined: Jan 2003
Posts: 2,640
Port Reading, NJ
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Quote:
champion has not made j11y's, superseeded by RJ12YC
all have resistors now.
J12Y's are a hotter plug and not the same as J11Y's.
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