[JDHOGG]

It's really not bad. I watched a video on Speedysgarage.net. He has a challenger with the same engine setup. I followed all of his tips and it was easy. I just took my time and did them 1 by 1.

One day, I might build up the courage. I work long hours and as much as I enjoy working on cars, I just don't have time to do it, for now I will have to resort to writing checks for things of this nature. Thanks for the encouragement!

 

[bearlytaz2005]

see my post with pics here at 36k [url]http://www.chargerforumz.com/showthread.php?p=1652131#post1652131[/URL]

 

[JDHOGG]

see my post with pics here at 36k [url]http://www.chargerforumz.com/showthread.php?p=1652131#post1652131[/URL]

Yep, they state 30k for a reason, you proved it here.

 

[Nitemare3219]

The internet provides some empowering information... I'm 20 years old, and practically everything I've learned about working on cars has been on the internet. The more that I think about it, I've probably learned more things in my entire life by reading/watching on the internet, than I ever have in person by demonstration/instruction/talking to someone.

Working on these "modern" vehicles isn't hard at all. For some reason everything I do takes 2x as long as someone says it will!... but I get it done and am happy afterwards, especially after saving a few hundred bucks sometimes!

 

[BC Clark]

The man reason is that they are standard copper plugs. While platinum and iridium fine wire plugs offer longer life and a more open ignition area, copper is still a better conductor. This selection may be due to the fact that the coils are driving two plugs each and the copper works better. Yep there are 16 of them. A friend of mine's 2014 Chrysler 300 Hemi has a more standard tuneup interval so there is something in our application. On the bright side they are not expensive (especially if you have to buy 16), there is plenty of room in the engine bay (try a sideways FWD V6), and I have always found changing plugs quality time with my engine.

 

[dperk]

The man reason is that they are standard copper plugs. While platinum and iridium fine wire plugs offer longer life and a more open ignition area, copper is still a better conductor. This selection may be due to the fact that the coils are driving two plugs each and the copper works better. Yep there are 16 of them. A friend of mine's 2014 Chrysler 300 Hemi has a more standard tuneup interval so there is something in our application. On the bright side they are not expensive (especially if you have to buy 16), there is plenty of room in the engine bay (try a sideways FWD V6), and I have always found changing plugs quality time with my engine.

I believe the 2014 model year was the change to the 100k mile spark plug maintenance interval. Happened with Chargers, too, I think. Maybe they changed something else, too.

 

[BC Clark]

Out of curiosity I took a look at the part numbers of the ignition coils between the 2012 and 2014 and they are the same part number. Since the computer controls the entire profile of the spark, timing, intensity, duration, etc. it's possible that there is a different profile programmed to optimize the later style plugs. That being said it doesn't look like you will be hurting the coils if you want to try a fine wire platinum or iridium plug.

 

[FinallyFast]

Out of curiosity I took a look at the part numbers of the ignition coils between the 2012 and 2014 and they are the same part number. Since the computer controls the entire profile of the spark, timing, intensity, duration, etc. it's possible that there is a different profile programmed to optimize the later style plugs. That being said it doesn't look like you will be hurting the coils if you want to try a fine wire platinum or iridium plug.

I seen on another site from a member that posts on here that the 2014+ are running p/n SP143877AA which are the NKG iridium. I'm approaching 30k in about half a year and was anticipating changing out the stock plugs and was surprised the manual states a 100k mile interval.

 

[dperk]

I seen on another site from a member that posts on here that the 2014+ are running p/n SP143877AA which are the NKG iridium. I'm approaching 30k in about half a year and was anticipating changing out the stock plugs and was surprised the manual states a 100k mile interval.

Same here. And the ignition coils won't determine which spark plug is used... the spark plug part number would do that...

 

[Deathproof Hemi]

If you have a 5.7 you are using the copper plugs. Copper plugs should not be used after 30-35k, if you want longer lasting plugs, then go platinum or iriduim, buy for our cars you get the most out of the coppers

 

[FinallyFast]

If you have a 5.7 you are using the copper plugs. Copper plugs should not be used after 30-35k, if you want longer lasting plugs, then go platinum or iriduim, buy for our cars you get the most out of the coppers

Unless you have a MY2014 5.7. Not sure about the 2015s.

I wouldn't mind running copper though if there is a benefit over iridium as I don't mind changing them out more frequently than the interval in the manual.

 

[Krazy931]

So i have to do my 64k plug change tommorow... im still unsure what the verdict is to this post... should i stick to copper? Or is it ok to swap over to iridium

 

[dperk]

Following this... I'll be due for my 30k change soon and haven't decided on plugs yet. Tempted to just go with copper as a safe bet.

 

[BC Clark]

Well 32,000 miles came up and I replaced the spark plugs. The owners manual said NGK LZFR5C-11 so I went ahead and stuck with those. $3.32 ea. at Rockauto. And upon removing the old ones that was exactly what the factory had installed. Dead easy to get to only needed a u-joint for a very shallow angle on a couple. The bore pretty well matched my spark plug socket but no clearance issue. They were not horrible but they were ready to be replaced. I would not extend the interval but I wouldn't panic if you can't get right to it. I found using one of those part grabbers a good way to thread the new plug in by hand. So while there was nothing difficult, removing 8 coils (two screws each), removing the old plug, checking the gap on the new (they were pre-gapped but things can happen during shipping), adding dab of anti-seize, reinstalling, and replacing the coils took a fair amount of time with 16 plugs. And left a pretty amazing pile of dead plugs.

 

[Chargermaster]

I've got a 2012 Charger Blacktop edition which I purchased brand new right out of the showroom (3.6L V6 & the 8-speed auto). Here is what my owners manual states.

- OE Mopar spark plug - RER8ZWYCB4 (Gap 0.043 in [1.1 mm)

- Replace the plugs at 96,000 miles or 72 months (156,000 kms) for the 3.6L engine

I only have 25,000 miles (40,000 Km's) on her...and on a recent 500 mile round trip I averaged... (I'm from Canada so owe use an imperial gallon which is a little bigger than the US gallon)

7.7L per 100 Km's which works out to be 36.685 imp MPG or 30.547 MPG for the US gallon. :TU:

My car is pretty much bone stock, except I use 0W 30 Amsoil 'signature series' synthetic oil & a K & N air filter. My Michelin X-Ice 3 winter tires were on (34 PSI) & the heater was on. I use only shell 87 octane regular fuel with nitrogen & my average speed was 73 miles per hour (117.4 Km's per hour).

I think my spark plugs are still good for another couple of years personally. :TU:

 

[dperk]

I've got a 2012 Charger Blacktop edition which I purchased brand new right out of the showroom (3.6L V6 & the 8-speed auto). Here is what my owners manual states.

- OE Mopar spark plug - RER8ZWYCB4 (Gap 0.043 in [1.1 mm)

- Replace the plugs at 96,000 miles or 72 months (156,000 kms) for the 3.6L engine

I only have 25,000 miles (40,000 Km's) on her...and on a recent 500 mile round trip I averaged... (I'm from Canada so owe use an imperial gallon which is a little bigger than the US gallon)

7.7L per 100 Km's which works out to be 36.685 imp MPG or 30.547 MPG for the US gallon. :TU:

My car is pretty much bone stock, except I use 0W 30 Amsoil 'signature series' synthetic oil & a K & N air filter. My Michelin X-Ice 3 winter tires were on (34 PSI) & the heater was on. I use only shell 87 octane regular fuel with nitrogen & my average speed was 73 miles per hour (117.4 Km's per hour).

I think my spark plugs are still good for another couple of years personally. :TU:

The V6's have always had a 100k mile maintenance on the plugs, if I remember right. My 3.5L '08 did, at least, and I'm pretty sure that's what the manual has always said for the V6's. Our 5.7L Hemis, for some reason, used copper core plugs at 30k mile intervals... not sure exactly why, but I wouldn't mind sitting down with someone at FCA and talk about it. Just the engineering curiosity in me, lol.

 

[laneo2494]

I actually just bought a set of new NGK copper plugs from Rockauto yesterday in anticipation of doing this change in the early spring when I take it out of hibernation. Right now my 2011 is at about 34k miles...I'm curious to see the condition of the current plugs. I don't constantly beat on the car but I do like to drive in a "spirited" manner from time to time. Btw, the plugs were only about $3 a piece.

 

[dodgeguy]

I actually just bought a set of new NGK copper plugs from Rockauto yesterday in anticipation of doing this change in the early spring when I take it out of hibernation. Right now my 2011 is at about 34k miles...I'm curious to see the condition of the current plugs. I don't constantly beat on the car but I do like to drive in a "spirited" manner from time to time. Btw, the plugs were only about $3 a piece.

I changed mine on the Challenger right at 30k and it looked liked they could go at least 20k more.

 

[gsbell]

I did mine at 36k they didnt "look" bad, however the car immediately perked up. I did pull fuse 31 at the same time so who knows?

 

[Charger3945]

This come straight for the Chrysler proving grounds. I was told by the engineers that the hemi run copper spark plugs in order to help with cold start problem they have with Platinum or uranium spark plugs. Copper spark plugs are only good for 30k mile before they need to changed! Yes you can drive longer on them but it is harder on my coil packs and if driven long enough you will do damage to the coils, lose performance, and gas mileage. But that's up to you how long you drive on them. Personally after being a auto mechanic for 18 years and seeing all the negative things that come driving to far on spark plugs I would change them at 30k. Beside this forum is mostly about how to get more horsepower out of your car right. So why would you want to skip the easy things as changing you spark plugs to keep the car running at top performance?