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3rd Gen Durango 2011 models

New plugs at 32k?

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Old 06-17-2014, 07:37 AM
Waynead Waynead is offline
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Default New plugs at 32k?

The service schedule for the hemi calls for new plugs at 32,000 miles. Really?
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Old 06-17-2014, 08:02 AM
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Yes sir
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Old 06-17-2014, 08:52 AM
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Just changed mine at 45k. They needed it
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Old 06-17-2014, 09:52 AM
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The 2014 is 100k before plug change. Most modern engines are over 75k, I cannot understand what Dodge engineering did to make the 2011-20013 need plugs that fast.
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Old 06-17-2014, 03:30 PM
modernmuscle modernmuscle is offline
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They take after Kia's scheduled maintenance service now which is a weird parallel to be able to draw. . .but hey if it keeps em on running then why not.
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Old 06-17-2014, 04:53 PM
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The wife has a 2007 300C 5.7L that has 78,500 miles on the odometer. I "cleaned" the plugs at 72,000 miles and the gap was at .054". I filed and regaped them to .043" and screwed them back into the engine. There was no change in performance or mileage.

Auggie
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Old 06-18-2014, 07:26 AM
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Quote:
Originally Posted by Auggie360 View Post
The wife has a 2007 300C 5.7L that has 78,500 miles on the odometer. I "cleaned" the plugs at 72,000 miles and the gap was at .054". I filed and regaped them to .043" and screwed them back into the engine. There was no change in performance or mileage.

Auggie
Waaaaaay back when, in HS auto shop we used to clean our plugs too. It was like a mini sand blaster with glass beads I believe that you would push the plug into this rubber fitting, hold them in and turn it on. Wonder if those are still available. Plugs looked like new, just regap and install! It was great when you fouled a plug or two when changing jets and such in the carb or from street racing. A lot cheaper too( free

Chris
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Old 06-18-2014, 08:21 AM
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This question was asked over and over on another forum for trucks way back. I bought my 2003 2500 Ram (1st year the HEMI came back) and it was a big topic then. According to the Internet Dodge did it for emissions to meet a certain ppm at the 100k mile mark. This is all based on forum lawyers so take it for what's it worth.
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Old 06-18-2014, 08:55 AM
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Quote:
Originally Posted by BadBenz94 View Post
Waaaaaay back when, in HS auto shop we used to clean our plugs too. It was like a mini sand blaster with glass beads I believe that you would push the plug into this rubber fitting, hold them in and turn it on. Wonder if those are still available. Plugs looked like new, just regap and install! It was great when you fouled a plug or two when changing jets and such in the carb or from street racing. A lot cheaper too( free

Chris


I still have one..somewhere.
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Old 06-18-2014, 09:47 AM
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Yup BadBen, that is exactly what I have screwed onto my garage wall and it works just great. Hook it up to the compressor and let it buck! Saved me a ton of $$ over the years.

Auggie
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Old 06-18-2014, 12:04 PM
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My wife has a 05 hemi truck. Changed out factory plugs at 94,000 miles. No noticeable change in power, mpg, or run ability. That set of plugs is still in at 180,000 miles now.
Btw, I got my best ever MPG on a tank at 160,000 miles.

We don't have emissions testing though, so Idk if the emissions part is what they were going for by changing the plugs so early. Truck has almost always had 87 oct in the tank as well.

P.s. The plugs weren't dirty or fouled at 94k, and I didn't expect them to be. The gap was wider than they are to be set at, but they weren't "omg" wide.

Last edited by srt20; 06-18-2014 at 12:07 PM..
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Old 06-22-2014, 11:32 AM
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Ok guys it occured to me while I was sitting on the throne that the 2014 plugs may be usable on the 11-13' hemi. 5.7 V8 Hemi (2014)
Mopar p/n SP143877AA (NGK Iridium 1LZFR5E-11). And
5.7 V8 Hemi (2011-2013)
Mopar p/n 05149177AB (NGK Yttrium ZFR5C-11). The 11-13' plugs change interval is so drastically different to the 14's 100k mile versions I am curious how far off the heat range is between these 2 plugs. This effects the balance between keeping the tip hot enough at idle to prevent fouling and cold enough at maximum power to prevent pre-ignition. Although these hemis are mechanically identical the tuning is different mainly because the 14's 8 speed transmission will have a totally different "load" map for fuel delivery. Even so I find it hard to believe that the heat range would be changed enough to alter cyl temps in a negative way. Maybe TNTECH or someone else has some input on this subject. Can 11-13' hemi's use the 14' plugs???
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Old 06-22-2014, 01:42 PM
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I would definitely try it if I had a 11-13
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Old 06-23-2014, 03:14 AM
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any one know the right spark for hemi v8 2011-2013 ??
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Old 06-23-2014, 01:24 PM
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Quote:
Originally Posted by alengineer View Post
any one know the right spark for hemi v8 2011-2013 ??
Mopar p/n 05149177AB (NGK Yttrium ZFR5C-11) x16
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Old 06-23-2014, 05:22 PM
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32k. Interesting. Right before the warranty runs out.
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Old 06-23-2014, 08:13 PM
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Quote:
Originally Posted by Waynead View Post
32k. Interesting. Right before the warranty runs out.


It seems kinda silly to me. Lol, the plugs are under 3/36. I guess they could make a case that 4K they won't cover them, but they usually do cover.
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Last edited by TNtech; 06-23-2014 at 08:16 PM..
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Old 06-23-2014, 10:50 PM
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Quote:
Originally Posted by TNtech View Post
It seems kinda silly to me. Lol, the plugs are under 3/36. I guess they could make a case that 4K they won't cover them, but they usually do cover.
Any chance you could get your hands on any info on these two plugs bro?(heat range) I would have no problem running the 14' plugs in my 13' as a Guinea pig to differentiate with my scanner but..... I'm only at 8800 miles in a year and a half. Who is closer to 30k and willing. Doesn't 100k mile plugs sound gooooood!
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Old 06-23-2014, 11:34 PM
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Quote:
Originally Posted by Fullslp View Post
Any chance you could get your hands on any info on these two plugs bro?(heat range) I would have no problem running the 14' plugs in my 13' as a Guinea pig to differentiate with my scanner but..... I'm only at 8800 miles in a year and a half. Who is closer to 30k and willing. Doesn't 100k mile plugs sound gooooood!





Here's some reading from NGK on heat ranges. 5 pages worth.


http://www.ngksparkplugs.com/tech_su...2.asp?mode=nml
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Last edited by TNtech; 06-24-2014 at 12:12 AM..
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Old 06-24-2014, 07:19 AM
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Good read ...FULLSLP I am game as well with only 9500 miles on clock in 16 months
In my past experience these motors run best on Copper plugs and these are simply the iridium plugs now. When I get home from a trip on the 30th I am gonna contact NGK to see what difference is
STEVE
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Old 06-24-2014, 07:19 AM
 
 
 
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