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Spark plug wires & spark plugs
#1

Hi,



I am planning to change my plug wires since the original wires are still on the car (130.000 KM`s) Any thoughts on which wires I should use? OEM, Nology, RS barn or Paragon? I also would like know what kind of(better) plugs I could use instead of the original Bosche items.



Regards,



Rutger
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#2

i am running the big blue ones from paragon with no issues



i run ngk iridium plugs - there was a small but noticeable bit of improvment over the bosch
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#3

My original plug wires are still performing flawlessly after 15l,000 miles. If they aren't breaking down/cross sparking I wouldn't change them yet. the original Bosch copper plugs also perform flawlessly, I too have the NGK Irridium plugs and noticed a bit better gas mileage but the cost hardly justifies the improvement in performance. Next time I will change back to the bosch copper electrode plugs. Good luck, Bob Blackwell.
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#4

copper is fine for a daily driver - however, at sustained 7000 rpm, there is a difference - i found the copper tended to fall flat up top in a fairly short time, but the iridium kept going for a lot longer
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#5

Flash and Bob,



Thank you for the quick reply, my wires are not cross sparking or breaking down ( as far as i can tell). While reading the different forums I found out that (or at least i think) it is a good thing to change the wires since the are almost 15 years old....but if it aint broke......I might as well keep the original wires on the car.

How much will a NGK Irridium plug cost over the OEM item?



Regards,



Rutger
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#6

iridium plugs will cost you two to three times the copper



as for the wires, that's really a tough one - you can test them for resistance to see how they are - i know the spec is out there somewhere



on my toys, i change them every 4th plug change (usually 2000 miles each) or 2 years, regardless of mileage, but i change my parts out much more frequently than most people, because i want all of the performance, and i can feel the difference in my plugs - my car sits a lot, and when i run it i run it hard, so the plugs don't last
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#7

Interestingly, just last month I called Pete at RS Barn to get a set of Magnecor wires from him. He told me that after having problems with them he had gone back to the OEM Beru wires. I ordered a set from and installed. Did not notice any performance difference... but AM radio sounds a lot better.
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#8

[quote name='RPM' post='35807' date='May 22 2007, 07:24 AM']I ordered a set from and installed. Did not notice any performance distance...[/quote]



I'm in the same camp as RPM. I haven’t changed over the 68's wires yet but with previous cars, I've changed 3 year old wires to a fresh set added fresh plugs and cap/rotor as well and the cars have felt the same. Do I question my senses or is the reality simply that the difference taking place is minimal.
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#9

When the old parts are still good enough then replacing with new or more exotic material parts will be a negligible difference. If the old parts are failing and in need of replacement (indicated by missing, poor starting, hesitation, visible spark jumping in a dark garage with the hood open) then the difference will be very noticable. good luck, Bob blackwell.
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