Msd Spark Plug Wires- User Manual

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M S D I G N I T I O N

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  The  Super  Conductor  Wire  has  less  than  50  ohms  per 
foot, the lowest available in a helically wound wire. A spe-
cial copper-alloy conductor is wrapped very tightly around 
a ferro-magnetic impregnated center core which gives the 
wire extremely high EMI suppression. This design  ensures 
that optimum spark energy will reach the spark plugs while 
EMI noise is held at a minimum. 
 

NOTE:

  Solid Core spark plug wires cannot be used with any 

MSD Ignition controls or Pro Mags. 

  Just  like  tires,  oil  or  spark  plugs,  the  spark  plug  wires 
are  a  maintenance  item.  Service  of  the  wires  hinges  on 
your  application  and  ignition  control.  If  you  have  a  6AL 
Ignition  and  use  the  car  as  a  daily  driver,  the  wires  will 
last for thousands of miles. Conversely, if you are racing a 
high compression engine with nitrous and an MSD 10, the 
wires  should  be  inspected  and  even  replaced  during  the 
race season. When checking wires, closely inspect for signs 
of burning or arc-through. Look at the boots for signs of 
cracking or burning and using an ohm meter to check resis-
tance of each wire is a good idea. Also, keep in mind that 
the coil wire is delivering eight times the spark so it should 
be checked closely.  When checking resistance of the wires 
note that the longer wires will have more total resistance, 
but their values should average out. If one wire stands out 
among the others, it should be replaced.

Spark Plug Wires

  Spark plug wires have two main objectives; transfer the 
spark energy to the plugs and suppress the Electro Magnetic 
Interference (EMI) that the spark voltage projects. Too high 
of resistance decreases the spark energy, yet too low of resis-
tance may generate too much EMI noise which will interfere 
with  the  operation  of  other  electronics  on  the  vehicle.  A 
good  quality  wire,  proper  routing  and  routine  inspection 
are all important in getting the most performance  out of 
your ignition system. 

   MSD offers two great spark plug wires; Heli-Core Wire 
and the 8.5mm Super Conductor Wire. The Heli-Core Wires 
are  a  performance  wire  upgrade  for  any  car  or  truck.  For 
serious  performance,  the  8.5mm  Super  Conductor  Wire  is 
the wire of choice. Both sets of wires feature a conductor 
that is helically wound around a special center core that 
is  designed  to  suppress,  or  choke,  EMI.  Helically  wound, 
sometimes  called  spiral  core,  must  be  used  with  an  MSD 
Ignition  Control.  Solid  core  wires  do  not  suppress  EMI 
so there could be interference with the ignition or other 
electronics on the vehicle. 

Spark Plug Wires and Spark Plugs

8.5MM SUPER CONDUCTOR

WIRE (RED OR BLACK)

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8/18/2009 9:31:27 AM