Fuel and Ignition Fuel Pumps and Systems, Ignition and Spark Systems

Plug wire resistance

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Old Sep 19, 2007 | 09:11 AM
  #1  
93BlackTA's Avatar
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Plug wire resistance

What is an acceptable resistance in a plug wire. I know it depnds on the length of the wire but can someone give me an indication to go by. The reason i'm asking is i made a set of OTVC Taylor wires and want to check them to make sure they are fine before making another set or buying another set. Thanks!
Old Sep 19, 2007 | 09:39 AM
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It varies widely by brand and wire construction. Stock wires can be ~900 ohms per foot. Aftermarket wires are usually way lower. (this does not mean stock wires are no good)

What I would do is measure each of your wires and compare them. Anything odd will easily stand out.
Old Sep 20, 2007 | 10:05 AM
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MSD claims 40-50 ohms/ft for their 8.5mm wires. They appear to measure out close to that.
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