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best spark plugs

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Old Jan 13, 2010 | 11:04 AM
  #16  
danwho's Avatar
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From: SanDiego
Year: 99
Model: Cherokee
Engine: 4.0 HO
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Champion truck plugs, #4412 ....BUT....can you get them anymore?
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Old Jan 13, 2010 | 11:13 AM
  #17  
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From: Blakeslee, PA
Year: 97
Model: Cherokee
Engine: 4.7
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I used the Champion Truck Plugs for years ... never had an issue with them. This 'go-round' I am going to try some NGK plugs. I was looking at the Autolite Iridiums, but at 5.99 a pop ... I handed them back to the counter person.



For wires ... my nod goes to Magnecor. Excellent product !
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Old Sep 14, 2010 | 02:07 PM
  #18  
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Year: 1998
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The E3's don't block the kernel as most standard electrode plugs do. They allow the fire from the plug to shoot directly into the combustion chamber without the electrode blocking the way.
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Old Sep 14, 2010 | 02:36 PM
  #19  
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Originally Posted by NH_Jeep_XJ
The E3's don't block the kernel as most standard electrode plugs do. They allow the fire from the plug to shoot directly into the combustion chamber without the electrode blocking the way.
E3 = good plugs
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Old Sep 14, 2010 | 03:09 PM
  #20  
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Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
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Best spark plugs? The ones on sale.
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Old Sep 14, 2010 | 05:34 PM
  #21  
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From: Austin, Texas
Year: 1991
Engine: 4.0 I-6 H.O.
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Originally Posted by NH_Jeep_XJ
The E3's don't block the kernel as most standard electrode plugs do. They allow the fire from the plug to shoot directly into the combustion chamber without the electrode blocking the way.
Yes, flame propagation, and with a good design not just a scam like the bosch multi-tip plugs.

I have been wanting to put these into my Trans Am, but the engine compartment was tight stock, and now with the long tubes, its a little more tricky overall
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Old Sep 14, 2010 | 06:22 PM
  #22  
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From: nanticoke pa
Year: 2000
Model: Cherokee
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I used autolite platinum in 92 xj only 2 bucks a piece when I bought them a few yrs. back now have 2000 xj but am open for discussion not time for plugs yet
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Old Sep 14, 2010 | 07:35 PM
  #23  
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From: New Jersey (Milltown, Lavallette, and Wayne)
Year: 1999
Model: Cherokee
Engine: 4.0L I6
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Champion Double Platinum!!!!
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Old Sep 14, 2010 | 07:41 PM
  #24  
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From: SEMI
Year: 1997
Model: Cherokee
Engine: 4.0
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I have the Accel Kit with an accel coil. Been running them for almost two years with no problems. I have been thinking of switching the plugs to the E3's as I have herd very good thing about them.
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Old Sep 15, 2010 | 11:38 AM
  #25  
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Originally Posted by kemjeep
I used autolite platinum in 92 xj only 2 bucks a piece when I bought them a few yrs. back now have 2000 xj but am open for discussion not time for plugs yet
I either have the Autolite platinums in mine or the AC Delco's not sure though, I cant remember
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Old Sep 17, 2010 | 09:23 AM
  #26  
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Year: 1998
Model: Cherokee
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NASA quadruple Platinum +6 split V Ultra Arc super magnums with flux capcitor. Better MPG's , throttle response, a few more horse and the best part is that my tires are a little more balanced.
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Old Sep 17, 2010 | 10:16 AM
  #27  
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From: New Jersey (Milltown, Lavallette, and Wayne)
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Engine: 4.0L I6
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Originally Posted by warpig602
NASA quadruple Platinum +6 split V Ultra Arc super magnums with flux capcitor. Better MPG's , throttle response, a few more horse and the best part is that my tires are a little more balanced.
Tires balanced from plugs???
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Old Sep 17, 2010 | 10:19 AM
  #28  
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From: DIRTY SOUTH
Year: 1991
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ngk is the best u can buy
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Old Sep 17, 2010 | 10:22 AM
  #29  
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Originally Posted by xjmuddigger
ngk is the best u can buy
proof?
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Old Sep 17, 2010 | 10:27 AM
  #30  
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From: Albuquerque
Year: 1999
Model: Cherokee
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I run champion copper's. Work just fine for me!
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