OEM Sparkplugs are nickle
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Joined: Jun 2010
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From: Vancouver, Wa
OEM Sparkplugs are nickle
I bought my sparksplugs yesterday and one of the four boxes had new style packaging. Of all the posts I've read on hear everyone is saying the OEM sprakplug electrode is copper...turns out it actually nickel:
Info from Wikipedia says nickel is the poorest choice for heat dissipation:
In the late seventies, the development of engines reached a stage where the ‘heat range’ of conventional spark plugs with solid nickel alloy centre electrodes was unable to cope with their demands. A plug that was ‘cold’ enough to cope with the demands of high speed driving would not be able to burn off the carbon deposits caused by stop-start urban conditions, and would foul in these conditions, making the engine misfire. Similarly, a plug that was ‘hot’ enough to run smoothly in town, could actually melt when called upon to cope with extended high speed running on motorways. The answer to this problem, devised by the spark plug manufacturers, was a centre electrode that carried the heat of combustion away from the tip more effectively than was possible with a solid nickel alloy. Copper was the material chosen for the task and a method for manufacturing the copper-cored centre electrode was created by Floform.
Info from Wikipedia says nickel is the poorest choice for heat dissipation:
In the late seventies, the development of engines reached a stage where the ‘heat range’ of conventional spark plugs with solid nickel alloy centre electrodes was unable to cope with their demands. A plug that was ‘cold’ enough to cope with the demands of high speed driving would not be able to burn off the carbon deposits caused by stop-start urban conditions, and would foul in these conditions, making the engine misfire. Similarly, a plug that was ‘hot’ enough to run smoothly in town, could actually melt when called upon to cope with extended high speed running on motorways. The answer to this problem, devised by the spark plug manufacturers, was a centre electrode that carried the heat of combustion away from the tip more effectively than was possible with a solid nickel alloy. Copper was the material chosen for the task and a method for manufacturing the copper-cored centre electrode was created by Floform.
Last edited by merv; May 21, 2011 at 02:17 PM.
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Seems to me that these trucks should be able to go 100k miles before needing a tuneup. I have 33k on mine and haven't changed the plugs. I thought they bumped it to 60k before needing a change. The sparks you pictured look like they still have a lot of life in them.
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From: Ila Georgia
The oem CORE is copper. Not the tip. The tip never has been on any plug I've ever seen or read specs on. Nickel is the least exspensive plug tip and fastest wearing. Hence the price. The 5.7 Hy bred uses a Ngk platinum with a 100k life expectancy. Can be used in any 2009 up 5.7. The best buy out there in spark plugs is Autolite. On Amzom.com they are selling the Autolite Iridium tip, number XP5325 for the 2009 up 5.7 Hemi. Plug was under $7.00. Plus Autolite then has a $2.00 rebate per plug on top of that. Autolite has a 5 year unlimited miles guarantee. Denso Iridiums are in the $16.00 each range. Go to the Autolite web site to print a coupon off. XP5325 is a copper core with Iridium tip. Mine are going in this week sometime.
Last edited by hounddogg; Jul 11, 2011 at 07:22 AM.
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