new spark plug wires for the Holbert car. BIG DISAPOINTMENT!
01-11-2006, 03:14 PM
#31
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I sell me sets on eBay too! Thanks for the kudos guys. I ran across this as a no-brainer a year ago, happy to spread my sets around.
Correct on the above threads: 928 wires (& most wire sets between '85-98) are solid-core Beru wires (0 resistance), with 1k (average) distributor cap boots (resistor-equipped), and 3k spark plug boots (resistor-equipped as well).
If you put Porsche boots on aftermarket wires (like i tried for 3 major brands 3x in a row before I discovered the solid-core secret), you'll have wildly varying degrees of resistance & one crappy running 928. I even used Taylo 7mm, 8mm, & MSD 7mm as well, all ran like crap.
Mark. (I have blue & black available, Beru still isn't making red)
Correct on the above threads: 928 wires (& most wire sets between '85-98) are solid-core Beru wires (0 resistance), with 1k (average) distributor cap boots (resistor-equipped), and 3k spark plug boots (resistor-equipped as well).
If you put Porsche boots on aftermarket wires (like i tried for 3 major brands 3x in a row before I discovered the solid-core secret), you'll have wildly varying degrees of resistance & one crappy running 928. I even used Taylo 7mm, 8mm, & MSD 7mm as well, all ran like crap.
Mark. (I have blue & black available, Beru still isn't making red)
01-11-2006, 03:45 PM
#32
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Still confused a little. i measured the resistance of all the wires and they are in the 30ohm range from end to end, including the two plugs (spark plug side and cap side)
so, where does the 3kohm resistance reside and how can you measure (if you can measure!) inductance is magnetically created resistance, but thats usually in a coil of wire set up., not a straight
MK
so, where does the 3kohm resistance reside and how can you measure (if you can measure!) inductance is magnetically created resistance, but thats usually in a coil of wire set up., not a straight
MK
Originally Posted by FlyingDog
The resistor is in the plug end. You should measure the resistance between where the wire goes into the plug end (doesn't sound possible on the new wires) and where the plug goes into the plug end. I haven't tried measuring the resistance on my wires or ends. I have read that the resistance measured with a regular multimeter on some wires isn't accurate. Apparently the resistance changes because of some electrical principal that I don't understand. I think it's some sort of field effect.
People seem to use wires that aren't correct regularly and not many have problems. Like Magnecor expresses repeatedly in their literature; plug wires cannot give you horsepower, they can simply allow you to use all the potential horsepower you have. Once you know the correct type of wires, the only upgrade is for durability, reliability, fit, or looks. Using the wrong type of plug wires can cost you horsepower, so it's best to use the right ones.
People seem to use wires that aren't correct regularly and not many have problems. Like Magnecor expresses repeatedly in their literature; plug wires cannot give you horsepower, they can simply allow you to use all the potential horsepower you have. Once you know the correct type of wires, the only upgrade is for durability, reliability, fit, or looks. Using the wrong type of plug wires can cost you horsepower, so it's best to use the right ones.
01-11-2006, 04:13 PM
#33
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According to Mark Robinson's post there are two resistors. A 3k in the plug end and a 1k in the cap end. They are resistors, so I would assume you could just measure the resistance from one side of the plug to the other side. If all you can find is 30ohms. I assume your new wires don't have resistors in the ends.
