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Unread 05-21-2010, 09:47 PM   #1
Nelson
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2003 TJ Wrangler 
 
Join Date: Sep 2009
Location: Chicago, Illinois
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sparks plugs

I have 232 with headers, mild cam, gm HEI ignition. What plugs would you recommend?

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Unread 05-21-2010, 10:06 PM   #2
kakai81
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1985 CJ7 
 
Join Date: Feb 2010
Location: San Marcos, Texas
Posts: 732
Denso, Autolite, or Champion, in that order. With the HEI and good plug wires, gap them to .040-.045.
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Unread 05-21-2010, 11:11 PM   #3
SlikRic
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1983 CJ7 
 
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Regular Champions have never faled me in my CJ's.
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Unread 05-21-2010, 11:15 PM   #4
firegod33
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1977 CJ5 
 
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Autolites, here. I've had good results from them in any gas motor I've ever run.
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Unread 05-22-2010, 12:31 PM   #5
TropicalNusselt
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1986 CJ7 
 
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I use Bosch Platinum 4+ with both stock and DUI ignition without any problem. Some will say "Impossible".

Raph
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TropicalNusselt- 1986 CJ7 w/ 258, T5, D300, D30/D44(3.31:1), Weber 38DGES, DUI, 2.5" Lift, 33" X 12.5" X 16", DC1
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Unread 05-23-2010, 07:46 AM   #6
Nelson
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2003 TJ Wrangler 
 
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spark plugs

Can any of you give me the Champion spark plug numbers? Aren't they N14y or sometimg like that?
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Unread 05-23-2010, 09:51 AM   #7
CJ Chet
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1986 CJ7 
 
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I have aprox. the same setup on my 258 (DUI ignition) with Champion 4412's (truck plugs). It's what Champion recommended for my setup. They work VERY well.
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Unread 05-23-2010, 11:20 AM   #8
n00bie
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1986 CJ7 
 
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I've been running the Autolite XP iridium plugs and they seem to do pretty well. I've had them with the HEI coil and the Holley CD box I'm running.
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