New Plug Wires...What A Difference!
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Joined: Apr 2005
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From: Just This Side of Damnation
New Plug Wires...What A Difference! Changed my plug wires last weekend. The 80k mile ones were pretty tapped out.
Got out my multi-meter to check old vs new. Old ones were all about the same, 345 ohms. The new ones checked at .850-ish. What a diff! It starts, idles, and runs great. It really helps on the cold mornings.
I know it's a no-brainer, but it's the biggest difference I've ever seen simply changing out plug wires. A well-spent $35.
Got out my multi-meter to check old vs new. Old ones were all about the same, 345 ohms. The new ones checked at .850-ish. What a diff! It starts, idles, and runs great. It really helps on the cold mornings.
I know it's a no-brainer, but it's the biggest difference I've ever seen simply changing out plug wires. A well-spent $35.
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From: Just This Side of Damnation
I got mine from Advanced Auto Parts, Part #97009, Autolite Professional Series. They didn't have them on the shelf and I had to wait a couple of days. $35 and change. They were an inch or two longer than the older ones, and fit the into the metal shields perfectly. They come pre-lubed with some dielectric grease, but I got one of those little pouches at the counter for extra. I didn't use it up even though I gooed 'em up pretty good.
I changed my plugs last year without changing the plug wires. I didn't have the cash and it seemed to run fine so I just did plugs. Normally I'd do both at once but I didn't in this case.
It was the first time I've checked wires with the meter so I'd never been able to quantify the difference before. I was pretty surprised at how large the difference was between the old and the new.
I changed my plugs last year without changing the plug wires. I didn't have the cash and it seemed to run fine so I just did plugs. Normally I'd do both at once but I didn't in this case.
It was the first time I've checked wires with the meter so I'd never been able to quantify the difference before. I was pretty surprised at how large the difference was between the old and the new.
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On The Tree
Joined: Nov 2004
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From: NY
Forgive my ignorance, but does not higher ohms mean greater resistance? And, is that a good or bad thing?
I just changed my plugs (iridiums) this past Sunday but not the wires. 67000 miles on the plugs. They looked worn down a bit, but not terrible. I notice no performance difference, but I did notice it running smoother when first starting up on really cold mornings. I guess I should be changing my wires in the next couple of weeks.
I just changed my plugs (iridiums) this past Sunday but not the wires. 67000 miles on the plugs. They looked worn down a bit, but not terrible. I notice no performance difference, but I did notice it running smoother when first starting up on really cold mornings. I guess I should be changing my wires in the next couple of weeks.
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From: Just This Side of Damnation
Originally Posted by Keysplayr
Forgive my ignorance, but does not higher ohms mean greater resistance? And, is that a good or bad thing?
From the advert for Granatelli plug wires at Jegs.Com:
" Hi-Performance Plug Wires. Granatelli Hi-Performance Spark Plug Wires exhibit near 0-ohm resistance with RFI/EMI outputs less than O.E. "
Granatelli seems to think having low resistance is a good thing. From my research I find that different resistance factors may be right for different different autos. I don't know what the factory requirement is for LS1s but I'll search around for a while to see if I can find that number.
On The Tree
Joined: Nov 2004
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From: NY
Originally Posted by joecar
I think he said 345 ohms vs 0.850 ohms (see the decimal point).
Gonna order a new set o wires in a few minutes. Autozone carries the 35.00 set. I'll pop an ohm meter on both old and new and post back in a couple of days.
Originally Posted by Keysplayr
Oh crud. I absolutely did not see that decimal point. Suddenly, things make a lot more sense, except the 345 ohm deal. That is incredibly high resistance.
Gonna order a new set o wires in a few minutes. Autozone carries the 35.00 set. I'll pop an ohm meter on both old and new and post back in a couple of days.
Gonna order a new set o wires in a few minutes. Autozone carries the 35.00 set. I'll pop an ohm meter on both old and new and post back in a couple of days.