Taylor Vs. Frpp: My Wire Resistance Specs

89gtsleeper

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May 20, 2016
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The info below is posted purely based on my measurements of my cars old and new wires. It had frpp 9mm wires on it when I bought it. Unknown age. I just bought some Taylor Spiro pro 8mm wires. I pulled all the old wires off and measured the length and resistance of each. All measurements done in doors at identical temperature. The only variance is the taylors are brand new, never installed. The ford racing are used and not positive on mileage, but I believe they are around 10-15k miles. Just leaving this here if anyone is intererested in some real world specs.

Wire Cylinder Total Ohms Length in Inch Ohms/Foot
Taylor 8mm Spiro Pro Coil 726 24.50 355.59
Taylor 8mm Spiro Pro 5 636 22.00 346.91
Taylor 8mm Spiro Pro 1 622 22.00 339.27
Taylor 8mm Spiro Pro 2 663 23.00 345.91
Taylor 8mm Spiro Pro 6 773 27.00 343.56
Taylor 8mm Spiro Pro 3 859 30.00 343.60
Taylor 8mm Spiro Pro 7 956 33.00 347.64
Taylor 8mm Spiro Pro 8 991 33.50 354.99
Taylor 8mm Spiro Pro 4 980 33.70 348.96

Taylor 8mm Spiro Pro Min 622 22.00 339.27
Taylor 8mm Spiro Pro Max 991 33.70 355.59
Taylor 8mm Spiro Pro Average 801 27.63 347.38


Ford Racing 9mm Coil 2080 24.00 1040.00
Ford Racing 9mm 5 1880 21.50 1049.30
Ford Racing 9mm 1 1970 22.50 1050.67
Ford Racing 9mm 2 2040 23.50 1041.70
Ford Racing 9mm 6 2360 26.50 1068.68
Ford Racing 9mm 3 2570 30.00 1028.00
Ford Racing 9mm 7 2760 31.50 1051.43
Ford Racing 9mm 8 2880 33.50 1031.64
Ford Racing 9mm 4 2920 33.50 1045.97

Ford Racing 9mm Min 1880 21.50 1028.00
Ford Racing 9mm Max 2920 33.50 1068.68
Ford Racing 9mm Average 2384 27.39 1045.27
 
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Considering that ford rates their wires as 1k ohms per foot, I bet they are pretty spot on with their advertised specs. Taylor advertised these at 350, and they are right on top of that.


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The info below is posted purely based on my measurements of my cars old and new wires. It had frpp 9mm wires on it when I bought it. Unknown age. I just bought some Taylor Spiro pro 8mm wires. I pulled all the old wires off and measured the length and resistance of each. All measurements done in doors at identical temperature. The only variance is the taylors are brand new, never installed. The ford racing are used and not positive on mileage, but I believe they are around 10-15k miles. Just leaving this here if anyone is intererested in some real world specs.

Wire Cylinder Total Ohms Length in Inch Ohms/Foot
Taylor 8mm Spiro Pro Coil 726 24.50 355.59
Taylor 8mm Spiro Pro 5 636 22.00 346.91
Taylor 8mm Spiro Pro 1 622 22.00 339.27
Taylor 8mm Spiro Pro 2 663 23.00 345.91
Taylor 8mm Spiro Pro 6 773 27.00 343.56
Taylor 8mm Spiro Pro 3 859 30.00 343.60
Taylor 8mm Spiro Pro 7 956 33.00 347.64
Taylor 8mm Spiro Pro 8 991 33.50 354.99
Taylor 8mm Spiro Pro 4 980 33.70 348.96

Taylor 8mm Spiro Pro Min 622 22.00 339.27
Taylor 8mm Spiro Pro Max 991 33.70 355.59
Taylor 8mm Spiro Pro Average 801 27.63 347.38


Ford Racing 9mm Coil 2080 24.00 1040.00
Ford Racing 9mm 5 1880 21.50 1049.30
Ford Racing 9mm 1 1970 22.50 1050.67
Ford Racing 9mm 2 2040 23.50 1041.70
Ford Racing 9mm 6 2360 26.50 1068.68
Ford Racing 9mm 3 2570 30.00 1028.00
Ford Racing 9mm 7 2760 31.50 1051.43
Ford Racing 9mm 8 2880 33.50 1031.64
Ford Racing 9mm 4 2920 33.50 1045.97

Ford Racing 9mm Min 1880 21.50 1028.00
Ford Racing 9mm Max 2920 33.50 1068.68
Ford Racing 9mm Average 2384 27.39 1045.27

@5.0specialist

It is all smoke and mirrors put up by people who never had any electronics training.
An ohmmeter measures DC resistance. DC voltages in an ohmmeter only vary because of the battery condition.The resistance per foot when measured with a DC ohmmeter is of very little use to calculate the spark energy delivered to the spark plug.

A spark from a typical automotive ignition system is a sharp spike with a very fast rise time.
PRACTICAL+ON+CAR+PICTURES+231.jpg


Taylor wires use a strategy that dates back to WWII; the wire inside the Taylor wires is a coil that forms an inductor.

Short story on AC circuits and inductors:
Inductors have a very low DC resistance but a very high resistance to AC current or spike waveforms like the one in automotive ignition systems. Inductors oppose the change in current and the higher the frequency, the greater the opposition to current. A spike waveform is by its very nature a high frequency AC current. The resistance to current flow in an AC circuit is called impedance, and it varies with the frequency of the current in the circuit.

Executive summary: spiral wound wire core spark plug wires offer no performance advantage over conventional spark plug wires. They may be made of better materials or have better manufacturing quality, but no greater spark energy in typical automotive use.

For those of you in doubt, here's the century old technology behind inductors. The laws of physics and the math associated with inductors isn't anything that "newer and better" technology is gong to change.
http://www.electronics-tutorials.ws/inductor/inductor.html

Automotive ignition information and waveforms
http://rafiq003.blogspot.com/2011/11/engine-control-sensors.html
 
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many people equate lower resistsance to more HP when that is not the case. Your stock EFI ignition system was designed with a certain resistance in the coil and wires. The other thing people dont realize is the spark plug carries more resisance than the wires. Also, on modified cars , going to a low resistance wire will throw off the tune. I truly think if you put on a new set of almost any new wires vs. old ones the car will run better and these companies do a good job of marketing.

Everyone bashes the FMS wires but I've used them for 20 years on multiple cars with zero problems, including my current setup wihich is a V3, and a top end making near 500 hp. I run the stock distributor with an older MSD coil and 6AL.
 
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many people equate lower resistsance to more HP when that is not the case. Your stock EFI ignition system was designed with a certain resistance in the coil and wires. The other thing people dont realize is the spark plug carries more resisance than the wires. Also, on modified cars , going to a low resistance wire will throw off the tune. I truly think if you put on a new set of almost any new wires vs. old ones the car will run better and these companies do a good job of marketing.

Everyone bashes the FMS wires but I've used them for 20 years on multiple cars with zero problems, including my current setup wihich is a V3, and a top end making near 500 hp. I run the stock distributor with an older MSD coil and 6AL.

Same here. I'm running the fms wires with an accel cap/rotor (still using stock ignition coil), factory replacement motorcraft copper plugs (at .050 gap) and it runs great. You can barely feel the engine idling while sitting in traffic. I think the Explorer 19 pound 4-hole injectors helps with the smoothness also.
 
I honestly started this post just to state my findings. Not trying to persuade anyone one way or the other. But I'm glad I got some information from the experienced guys on here. I wanted to get new wires so I could check one more item off my list of "things with unknown mileage" on my car.

I tested the resistance before install to verify the quaility and consistency of the product. Was interested to see if I would find large tolerances from one wire to the next. Then I wanted to see what the old wires showed. What I learned from this was not so much that the taylors had less resistance, but that the real vs. stated specs and the tolerance across wires were very similar across each brand's product. My interpretation of the data is they are both decent quality products, and people considering a purchase of either could use my findings to their advantage.
 
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