Custom Spark Plug Wires

Discussion in 'High Performance Modifications' started by 79supergasdriver, Mar 1, 2018.

  1. 79supergasdriver

    79supergasdriver A Scholar and a Gentleman

    768
    5
    Jun 22, 2005
    Wichita, KS, USA
    Picked up some really cool billet over-the-header wire looms (flames were milled in but I filled them with a paint marker to match car) so now I have to cut custom plug wires. First time ever attempting this and the instructions kinda suck. What part of the wire is the conductor, the fibrous black stuff in the center, or am I looking for a metal strand somewhere in there?
    20180301_145649.jpg 20171204_102307.jpg
     
  2. COPO

    COPO Veteran Member Lifetime Gold Member

    16,518
    301
    Sep 15, 1999
    Ontario, Canada
    The black center conductor needs to be bent
    over onto the yellow wire and the brass
    connector is placed over the yellow and
    black end having the black end facing
    the back of the brass connector and
    not near the split you’ll be crimping.
     
  3. 79supergasdriver

    79supergasdriver A Scholar and a Gentleman

    768
    5
    Jun 22, 2005
    Wichita, KS, USA
    Thanks, COPO. How do I cut these without damaging the conductor?
     
  4. mrdragster1970

    mrdragster1970 Veteran Member Lifetime Gold Member

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    Sharp razor blade on insulator, dykes on center has worked perfect for me.

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  5. 80sz

    80sz Veteran Member

    2,769
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    Feb 2, 2014
    Buffalo,n.y.
    You don't have to get right to the center conductor with blade. Score it well then pinch with one hand and twist cut end off.
     
  6. COPO

    COPO Veteran Member Lifetime Gold Member

    16,518
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    Sep 15, 1999
    Ontario, Canada
    Last edited: Mar 1, 2018
  7. budro6968

    budro6968 Veteran Member

    2,478
    343
    Apr 2, 2016
    Jax Florida
    The core is probably fiberglass strand that is impregnated with carbon. Like graphite.
     
  8. Zspoiler

    Zspoiler Veteran Member

    2,665
    155
    May 6, 2012
    Federal Way, Washington
    MSD has a nice tool if you make your own wires
     
  9. mrdragster1970

    mrdragster1970 Veteran Member Lifetime Gold Member

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    I think my tool is made by Taylor, not sure, it's really old, but the MSD plier's style is awesome.
    My chassis guy has those and it's much easier than mine!!

    My center conductor is metal, I don't have to worry about damage when cutting insulator.

    [​IMG]

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  10. budro6968

    budro6968 Veteran Member

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    Apr 2, 2016
    Jax Florida
    I used to have to keep spares in my trunk and do cut and repairs all the time back when I had my 78Z. The wires would jump out of the loom and burn on the headers. I hate when it happens. Runs like a Briggs & Stratton L/M with a blade out of balance.
     

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