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spark plug wires
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billy
Posted 2017-07-06 9:08 AM (#543635)
Subject: spark plug wires



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Location: upstate new york
Fellow Forward Lookers,
I went to my local NAPA store and ordered up all the usual tune-up stuff...plugs wires, cap, rotor, points etc....I recently acquired the spark plug covers that bolt onto the valve covers....my newly purchased wire set does not appear to be long enough to fit under the covers...if I run it without the covers the wires work, car runs, all is good...Is there a special wire set just for that purpose that is longer? Should I buy the parts and make my own? Any help would be appreciated...57 New Yorker,,,392 Hemi
Thanks,
billy
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Mopar1
Posted 2017-07-06 9:20 AM (#543636 - in reply to #543635)
Subject: Re: spark plug wires



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Generic Accel wires are long enough. There also purpose made (expensive) wires at Hot heads. Atlas Obsolete makes repro.
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billy
Posted 2017-07-06 9:32 AM (#543637 - in reply to #543635)
Subject: Re: spark plug wires



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Thanks Mopar1 / George.....will look into those alternatives...
billy
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wayfarer
Posted 2017-07-06 10:22 AM (#543640 - in reply to #543635)
Subject: Re: spark plug wires



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You will need a 25 ft roll if you make your own and you really need to buy the proper crimping tool.
If you want to use 8mm wire I have plenty of high quality black and dk blue wire available.
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billy
Posted 2017-07-08 9:19 PM (#543781 - in reply to #543635)
Subject: Re: spark plug wires



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Ok fellow hemi owners, how do you know if the spark plug boot is on the spark plug with it buried so far down in??? Is there a special boot install tool? My fat fingers wont go down far enough to tell if the boot is all the way on...
Thanks for the offer Wayfarer...I went with the Accel wires from the local Auto store...any help would be appreciated..
billy
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56D500boy
Posted 2017-07-08 9:33 PM (#543783 - in reply to #543781)
Subject: Re: spark plug wires



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The proper old school hemi wires have long ceramic "boots" that fitted over the wire and the spark plug end. You used that to push the spark plug wire on and later to extract the wire. The repros, e.g. from MoparMall, use plastic tubes. The tubes show in the photo and diagram below:





Edited by 56D500boy 2017-07-08 9:34 PM




(EarlyHemiCrossSection_small.jpg)



Attachments
----------------
Attachments EarlyHemiCrossSection_small.jpg (159KB - 135 downloads)
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Mopar1
Posted 2017-07-09 8:48 AM (#543814 - in reply to #543783)
Subject: Re: spark plug wires



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I bought a spark plug wire puller & opened up the hole a little. I use it to push the wire onto the plug. This is with straight boot Accel wires. Gently pull on the wire to see if it's on.

Edited by Mopar1 2017-07-09 8:50 AM
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billy
Posted 2017-07-10 9:21 AM (#543880 - in reply to #543635)
Subject: Re: spark plug wires



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Thanks Dave and George,,,,I bought the Accel wire kit, but does not look like its going to be much fun trying to get the Accel boot down that tube...we'll see how it goes..
billy
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wayfarer
Posted 2017-07-10 10:52 AM (#543885 - in reply to #543635)
Subject: Re: spark plug wires



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You can use some di-electric grease or silicon grease on the inside of the boot to help it slide on.
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billy
Posted 2017-07-10 2:12 PM (#543896 - in reply to #543635)
Subject: Re: spark plug wires



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Thanks Gary...
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Mopar1
Posted 2017-07-10 2:31 PM (#543899 - in reply to #543896)
Subject: Re: spark plug wires



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Mopar Performance, and others probably, make wire pullers, as I mentioned above. makes pushing the wires on easy!
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rebel
Posted 2017-07-12 2:29 PM (#544039 - in reply to #543899)
Subject: Re: spark plug wires


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Billy,
The wires I used for my 58 N/Y'er, with the 392, came from Taylor cable products. The set fit perfectly. My set was p/n #075089. Their website is www.taylorvertex.com. Not cheap but the best I could find anywhere.
Bob
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1960fury
Posted 2017-07-12 5:10 PM (#544049 - in reply to #543635)
Subject: Re: spark plug wires



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when i got my car i changed stock to a set of mopar performance wires, they failed one by one. later, about 20 years ago, i purchased universal 8mm, cut to lenght, taylor wires, black with 180° boots. couldn't be happier and they still look like new. requires a crimping tool, but if you want a perfect fitting set, i think you have to cut it to lenghts yourself.
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Powerflite
Posted 2017-07-12 5:43 PM (#544050 - in reply to #544039)
Subject: Re: spark plug wires



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rebel - 2017-07-12 11:29 AM

Billy,
The wires I used for my 58 N/Y'er, with the 392, came from Taylor cable products. The set fit perfectly. My set was p/n #075089. Their website is www.taylorvertex.com. Not cheap but the best I could find anywhere.
Bob


I agree. I bought the Taylor hemi wires too and I really like them.
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51coronet
Posted 2017-07-22 12:04 AM (#544590 - in reply to #543635)
Subject: Re: spark plug wires


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The original solid core wires don't have a high fail rate since its basically stranded wire inside the jacket unlike modern carbon type wires. If radio noise isn't an issue I see the original type wires on ebay all the time.
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BigBlockMopar
Posted 2017-07-22 3:18 AM (#544595 - in reply to #543635)
Subject: Re: spark plug wires



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It's usually the insulating jacket around the core that starts failing after a number of years. Then spark-energy finds its way through the covering to nearby/touching metal and cause misfires.
8mm wires have a .5mm of extra insulation around the core wire which can extend their lives greatly.
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wayfarer
Posted 2017-07-23 11:00 AM (#544668 - in reply to #543635)
Subject: Re: spark plug wires



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8mm is good stuff but, on a couple of customers projects, I found that 8mm wire gets a bit crowded at the back of the wire cover. Some cover have a bit more interior space than others; 7mm fits all that I have worked with.
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