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Unread 07-07-2013, 07:48 PM   #1
tjeep1
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1978 CJ7 
 
Join Date: Oct 2012
Location: northeast, ohio
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258 engine complete rebuild

what spark plugs are you guys running in these engines,e3-ngk-champion-etc. any input would be great again motor is fresh all rebuilt bored 20 over thanks in advance

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Unread 07-07-2013, 08:06 PM   #2
only in a jeep cj
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Location: Mobile, Alabama
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The regular champion the ....RFN14LY or whatever the numbers are
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1975 CJ-6 304 T15 Dana20 30/44 3.73
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Unread 07-07-2013, 08:07 PM   #3
petey156
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Champs
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Unread 07-08-2013, 11:05 AM   #4
tjeep1
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thanks guys champion it is
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Unread 07-08-2013, 12:56 PM   #5
WindKnot
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1977 CJ7 
 
Join Date: Mar 2011
Location: Kaibab Plateau, Northern Arizona
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I agree with the Champions and I'll go further... Forget all about platinum, iridium, unobtanium, etc. and stick to good old copper plugs. They may be effective with newer designs, but even with a HEI replacement ignition system, all the 258 needs is a copper plug. The others will cost more and do no better; save your money on this one!
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Unread 07-08-2013, 02:04 PM   #6
Hawk4097
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I went NGK with My HEI distributor
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