100k Spark Plugs
100k Spark Plugs
Searched "Police Ram 100k Spark Plugs" in google and came up with this tid bit from Ramforumz.
http://www.ramforumz.com/archive/index.php/t-97496.html
Searched the part number SP-143877AA described in the third post down from the top in makeitmoparparts.com part # search and came up with this.
http://www.makeitmoparparts.com/parts.htm
I know some guys on here were looking pretty hard for these things, this is the closest I've come to finding anything about the plugs. At the $13.00 per plug that would be a total of $208 just for the plugs without shipping costs if they are in fact the right plugs.
http://www.ramforumz.com/archive/index.php/t-97496.html
Searched the part number SP-143877AA described in the third post down from the top in makeitmoparparts.com part # search and came up with this.
http://www.makeitmoparparts.com/parts.htm
I know some guys on here were looking pretty hard for these things, this is the closest I've come to finding anything about the plugs. At the $13.00 per plug that would be a total of $208 just for the plugs without shipping costs if they are in fact the right plugs.
Record Breaker
Joined: Mar 2011
Posts: 1,035
Likes: 2
From: South, FL
The mopar site doesn't say what kind of plug... At 13.00 a pop, they are probably iridium plugs... Still curious. Who wants to be the guinea pig?? Lol
On my honda jetski I had to put iridiums in and they were about 16$ a pop... There was only four and I thought those were expensive.
On my honda jetski I had to put iridiums in and they were about 16$ a pop... There was only four and I thought those were expensive.
Record Breaker
Joined: Mar 2006
Posts: 2,165
Likes: 2
From: Alberta
The only time I would ever worry is IF i Put a copper plug into a SRT engine, SRT use platt plugs, no issues running platts ( aside from intial cost ) in my 06 Hemi, I really am of the opion Dodge and the dealers is screwing most hemi owners with the low life span of the copper plug, Yes the plugs are inexpensive, but it keeps dodge dealers service bays busy.
Moderate User
Joined: Oct 2008
Posts: 17,003
Likes: 21
From: Albany, NY
Copper is used and reccomended because it has better conductivity and is just a better plug than Platimum or Iridium when comparing peformance vs cost.
Platinum and iridium actually burn hotter at the same heat range as a copper plug and this changes the characteristics of the tune that is meant for copper plugs. So, for the same heat range plug, you would have to reduce the gap on those fancy plugs to get the same "heat range".
Fancy plugs are just a lazy way to go about plugs. They last longer than copper and are only better in marginal circumstances(very limited...)
I would never go 100kmi even on fancy plugs. More like 80-90K. With that said, 3rd gen guys are claiming 35kmi-40kmi on coppers is legitimate. So, that would mean 2 plug changes for every fancy plug change. That's a total of $70 for both plug changes at $2 per plug. $2x32=64 plus tax. Even at 3 plug changes you under $100 in parts. I could care less about labor expense because plugs ar plugs and are easy enough to change regardless on how much guys cry about the time it takes. Guys spend more time doing ridiculous unecessary mods than they would changing their plugs.
Here's the best part....8/10 3rd Gen guys who have went to fancy plugs have complained about reliability and running troubles! The Hemi seems to be very particular to copper plugs. maybe the 4th Gen is diff, but I don't think they are. i'm sure the plice package vehicles have different tunes to accomodate the higher mileage plugs.
You'll never hear of a racing guy use platinum or iridium plugs, only copper!
Platinum and iridium actually burn hotter at the same heat range as a copper plug and this changes the characteristics of the tune that is meant for copper plugs. So, for the same heat range plug, you would have to reduce the gap on those fancy plugs to get the same "heat range".
Fancy plugs are just a lazy way to go about plugs. They last longer than copper and are only better in marginal circumstances(very limited...)
I would never go 100kmi even on fancy plugs. More like 80-90K. With that said, 3rd gen guys are claiming 35kmi-40kmi on coppers is legitimate. So, that would mean 2 plug changes for every fancy plug change. That's a total of $70 for both plug changes at $2 per plug. $2x32=64 plus tax. Even at 3 plug changes you under $100 in parts. I could care less about labor expense because plugs ar plugs and are easy enough to change regardless on how much guys cry about the time it takes. Guys spend more time doing ridiculous unecessary mods than they would changing their plugs.
Here's the best part....8/10 3rd Gen guys who have went to fancy plugs have complained about reliability and running troubles! The Hemi seems to be very particular to copper plugs. maybe the 4th Gen is diff, but I don't think they are. i'm sure the plice package vehicles have different tunes to accomodate the higher mileage plugs.
You'll never hear of a racing guy use platinum or iridium plugs, only copper!
Registered User
Joined: Jan 2012
Posts: 14
Likes: 0
From: Clarksville TN
Plug sets
I recently purchased a set of plugs from a dealership, $117 incl tax (in illinois) for the 8 top row coppers and the 8 bottom row iridiums. its a little better than the $208 that was estimated earlier in the thread. Big ol MOPAR on the box, too... The part number that was referenced is one of the same ones i needed for the 4.7 flex. Do the Hemi's take the same plugs?
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Captain
Joined: Dec 2009
Posts: 605
Likes: 1
From: Canada
A lil confused when you guys mention copper plugs, i went to the dealer to grab 16 plugs and they gave me some nickel plugs for 7$ each, am i missing something.
http://www.youtube.com/watch?v=pIWrN...78oQl-oQRcBu7d
http://www.youtube.com/watch?v=pIWrN...78oQl-oQRcBu7d
Moderate User
Joined: Oct 2008
Posts: 17,003
Likes: 21
From: Albany, NY
They are Copper core-nickel electrodes
This should help a little..
The copper core-nickel compound central electrode is the key part of the spark plugs.
It has features such as wide heat range, good heat and electricity conductivity, resistance to oil fouling and carbon deposits, and energy efficiency.
This central electrode is widely used in spark plugs to ensure stable ignition, and compared with the nickel central electrode, the heat range can be increased by 20~30%. The material used for the central (copper and nickel alloy) electrode conforms with the standard DIN and National Machinery Co., Ltd.
Since copper is a great conductor, but rather soft, they need a hardened case on the exterior that also has good conductance and will provide better wear characteritics.
Electrode Core Material....Copper
Electrode Tip Material....Nickel alloy
This should help a little..
The copper core-nickel compound central electrode is the key part of the spark plugs.
It has features such as wide heat range, good heat and electricity conductivity, resistance to oil fouling and carbon deposits, and energy efficiency.
This central electrode is widely used in spark plugs to ensure stable ignition, and compared with the nickel central electrode, the heat range can be increased by 20~30%. The material used for the central (copper and nickel alloy) electrode conforms with the standard DIN and National Machinery Co., Ltd.
Since copper is a great conductor, but rather soft, they need a hardened case on the exterior that also has good conductance and will provide better wear characteritics.
Electrode Core Material....Copper
Electrode Tip Material....Nickel alloy
Last edited by dirtydog; Feb 8, 2012 at 05:07 PM.