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spark plug gap? #1263488 07/07/12 02:36 PM 07/07/12 02:36 PM
Joined: Jan 2012 Posts: 80 california santa clarita M moparpete22 OP member
moparpete22 OP member M Joined: Jan 2012 Posts: 80 california santa clarita	putting some new spark plugs in my 340 cuda with the electronic ignition (orange box)and was wondering which gap i should use? thanks for your help

Re: spark plug gap? [Re: moparpete22] #1263489 07/07/12 02:46 PM 07/07/12 02:46 PM
Joined: Jan 2008 Posts: 487 Sonoran desert, Arizona, USA M moparjo68 mopar
moparjo68 mopar M Joined: Jan 2008 Posts: 487 Sonoran desert, Arizona, USA	I have the same electronic box and my plugs are gapped at .035.

Re: spark plug gap? [Re: moparjo68] #1263490 07/07/12 04:24 PM 07/07/12 04:24 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	As Joe said .035" will work excellent. You could experiment with .030" and .040" & see how it acts. FYI NAPA sells a Mopar rotor, (Echlin MO-3000 iirc) with a .060" longer blade will will help with spark scatter/rotor phasing issues if needed and I'd rather have the spark energy all being used inside the combustion chamber rather than being dissipated jumping a large gap from the rotor blade to the cap terminal live every 24 hour block of time like it's your last day on earth

Re: spark plug gap? [Re: RapidRobert] #1263491 07/07/12 04:44 PM 07/07/12 04:44 PM
Joined: Apr 2010 Posts: 4,154 bethlehem pa M mikemee1331 master
mikemee1331 master M Joined: Apr 2010 Posts: 4,154 bethlehem pa	Quote: As Joe said .035" will work excellent. You could experiment with .030" and .040" & see how it acts. FYI NAPA sells a Mopar rotor, (Echlin MO-3000 iirc) with a .060" longer blade will will help with spark scatter/rotor phasing issues if needed and I'd rather have the spark energy all being used inside the combustion chamber rather than being dissipated jumping a large gap from the rotor blade to the cap terminal that's interesting! how did you stumble on that RR?

Re: spark plug gap? [Re: mikemee1331] #1263492 07/07/12 04:52 PM 07/07/12 04:52 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Someone (on here) iirc way back provided the Echlin # and Jacobs ignition ("Aunt Tillys tips" in their bible) has some interesting info on how different gaps will affect how it starts/runs/maintenence intervals/power produced live every 24 hour block of time like it's your last day on earth

Re: spark plug gap? [Re: moparpete22] #1263493 07/07/12 06:00 PM 07/07/12 06:00 PM
Joined: Jan 2012 Posts: 80 california santa clarita M moparpete22 OP member
moparpete22 OP member M Joined: Jan 2012 Posts: 80 california santa clarita	Great. thank you very much. I'll look into that at NAPA

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