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Author Topic: spark noise and plug wire replacement  (Read 468 times)
KC0MQR
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« on: September 02, 2003, 10:00:52 PM »

Would like to know if  anyone out there has information on good high guality spark plug wire sets for noise suppression. I have a 2002 gmc pu with the 6.o liter v8 . I have done everything except replace the spark plug wires. I know there are aftermarket wires out there but are expensive and would hate to make any more mistakes.  Also wonder about opinions on the best pu (full size ) for mobile operations. I have had nothing but trouble with this gmc. ( think it is a lemon when it comes to the electrical system)

Thanks in advance:   John kc0mqr  73
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K0BG
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« Reply #1 on: September 03, 2003, 09:10:29 AM »

Well, I know a few folks who love their 2002 GMCs, but if you do change vehicles and decide on a diesel, don't expect it to be any quieter; they're not especially the newer single-rail electronic injectored ones.

There are several companies making after-market wire kits, and some are meant for racing and are not noise suppressing types. Personally, I have found the standard factory stuff to be as good as any.

As spark plug wires age, the outer semi-conducting sheath gets hard and cracks and little arcs start jumping where ever they can causing an increase in the ignition noise. Most folks never change ignition wires, but they should at about 50K miles. Thanks goodness the factories are starting to use coil-over-plug technology which eliminates the HV wires altogether.

Alan, KØBG
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N7PTM
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« Reply #2 on: September 05, 2003, 01:15:45 AM »

Check out Magnecor's spark plug wires, specifically the CN series:

http://www.magnecor.com/magnecor1/main.htm
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N7PTM
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« Reply #3 on: September 05, 2003, 01:30:00 AM »

Oh yeah, if you're looking for another vehicle, try one with "COP" type ignition. COP = coil on plug. But the catch is, you'll only find this on a few vehicles less than 2 years old, it's a very new technology.

COP ignition systems do away with spark plug wires completely (or they're very short, say 3" or so) by placing the ignition coils on top of (or near) each spark plug.

My '03 Ford E-150 cargo van has such a setup on the 4.6 litre V8. While I haven't done much mobile HF lately, those times I have there has been no ignition noise though I still run the 706 with the noise blanker on.
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K0BG
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« Reply #4 on: September 05, 2003, 09:39:27 AM »

Actually, Coil-Over-Plug has been with us a lot longer than 2 or 3 years. Saab has used it on some models for over 10 years, and so has BMW.

The system used by Ford has two forms of supression; A ferrite bead and a coil (actually a spring) designed into the assembly. They appear to work very well. My wife's new car (on order) uses this technology, so I'll get a first-hand chance to see how good it really is.

Alan, KØBG
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M0YOJ
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« Reply #5 on: September 18, 2003, 05:37:08 AM »

As someone else said, Magnecor - period. They work, and as hams you'll know why.
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KL7FH
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« Reply #6 on: September 18, 2003, 07:18:53 PM »

I bought the Magnecor wires for my F-150 6cyl and the noise only reduced 3db. I am still getting s-9 ignition noise. My next step is to use the braid technique.
73
Frank
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