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  #13  
Old 05-30-2013, 09:16 AM
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Re: Any hemi spark plug options?

Lots of Spark plug threads in How to section
Good one here
DIY: Hemi 5.7L Spark Plug Change
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Old 05-31-2013, 11:11 AM
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Re: Any hemi spark plug options?

I changed plugs today using the Champion 9055 Iridium plugs. I'm happy to report no issues at this point and the HEMI runs nice and smooth. I've only put a few miles on so time will tell if there are problems down the road (pun intended), but at least there have not been any error codes, etc.

The job itself is not too difficult, and took me about 1.5 hours to complete. I took my time and double checked the plug gaps following recommended torque values and used anti-seize on the threads. I had no major clearance or access issues but then I no longer have the factory air box and such as those were removed when I installed the Volant CAI.


The set of 16 plugs cost just under $100.00 from Amazon. Overall, I think this is a simple do-it-yourself project that will save some $$$ and provide a sense of satisfaction for anyone choosing to take this on.


Just my $0.02 worth...
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Old 06-01-2013, 11:15 AM
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Re: Any hemi spark plug options?

Quote:
Originally Posted by BuckeyeSRT View Post
Lots of Spark plug threads in How to section
Good one here
DIY: Hemi 5.7L Spark Plug Change
Nice write up. Thanks!
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  #16  
Old 08-11-2013, 01:32 PM
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Re: Any hemi spark plug options?

I was at a car show this week and saw a challenger 5.7 with the engine cover off and the dude had a full msd wiring kit under the hood ( as in the electrical packs on the valve covers) i just thought it looked sick and im not sure of the value of changing the electrical system lol but just wanted to share
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Old 08-18-2013, 08:32 AM
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Re: Any hemi spark plug options?

Quote:
Originally Posted by binford6100 View Post
I changed plugs today using the Champion 9055 Iridium plugs. I'm happy to report no issues at this point and the HEMI runs nice and smooth. I've only put a few miles on so time will tell if there are problems down the road (pun intended), but at least there have not been any error codes, etc.

The job itself is not too difficult, and took me about 1.5 hours to complete. I took my time and double checked the plug gaps following recommended torque values and used anti-seize on the threads. I had no major clearance or access issues but then I no longer have the factory air box and such as those were removed when I installed the Volant CAI.


The set of 16 plugs cost just under $100.00 from Amazon. Overall, I think this is a simple do-it-yourself project that will save some $$$ and provide a sense of satisfaction for anyone choosing to take this on.


Just my $0.02 worth...

Only use OEM Copper plugs, as was recommended to you. The Iridiums cost twice as much, but in fact the Hemi will run worse with Iridiums, and it is also likely you will have problems and will have to remove them.

Copper spark plugs have the best performance of any spark plug type. The other metals are, unfortunately, not as conductive as copper is. Platinum and iridium plugs are more likely to overheat, which causes damage to the plug components and can compromise the delivery of the spark to the engine block.

Platinum and Iridium plugs perform at a lower level than copper spark plugs, because they are less conductive and they tend to overheat. However, the overall longevity of these two types of metal is better than copper plugs. In reality, copper has the best performance of all three and the worst longevity. Platinum has good longevity and the worst performance. Iridium has good longevity and a performance that is decent, which is why iridium plugs tend to be more expensive than any other type. Still, the difference between these plugs in terms of overall quality is minimal, as there is a trade off for each.
Most copper plugs need to be changed every 20 to 30k miles or so. Platinum and iridium plugs can often go for twice that before they require changing, but the overall performance will not be as good and you may have to deal with overheating of the plugs.

my .02
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  #18  
Old 06-19-2014, 03:41 PM
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Re: Any hemi spark plug options?

My '12 Overland mileage was around 29,500 so I got everything together for the plug change. By the way it's a 4x4 hemi. The first one on the front passenger side went easy because I think I had it off about 6 months ago just to check its condition. Well the next 15 had to have been installed by an alien robot. They wouldn't budge. I more or less demonstrated to the remaining 15 who was boss. I got a 5' aluminum pipe on my socket handle and cracked each one open. They had to have been installed at the factory with about 30-40 pounds or more of torque and each plug bone dry threads.
Is this how their building them now? They must want their dealer mechanics to do the job for $400.00. I did it for $64 and the car runs like a top.
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  #19  
Old 06-21-2014, 08:14 AM
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Re: Any hemi spark plug options?

I completed the spark plug change on my 2011 Hemi last weekend.
I purchased a set of the NGK Cooper plugs for $65 and it was an easy change for the most part.

I purchased my 2011 used with about 75,000 miles on it and had noticed some rough transitions when going to ECO mode. Since I bought it used I wanted to make sure I had a good baseline on the maintenance. I changed the oil the first week I had it, supper easy compared to my last vehicle, changed and topped off other fluids.

At 81,000 miles I received the plugs and picked a Saturday morning to do the change, overnight cool down. The spark plug change started out tough, the eight on the passenger side were very tight. not sure if they were put into tight or if there a little bit of corrosion. The ones on the drivers side came out easily, hardly any torque needed to remove them.

I usually wouldn't put anti-seize on the plugs but I did this time. My torque wrench didn't like the 13 in-lb setting and I didn't trust it. So I pulled them all out, applied the anti-seize and reinstalled them to a 1/16 of a turn greater than hand tight.

She now runs like a charm and I am not feeling the roughness when switching to ECO mode.
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Old 06-21-2014, 08:18 AM
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Re: Any hemi spark plug options?

Quote:
Originally Posted by jmc2995 View Post
I was at a car show this week and saw a challenger 5.7 with the engine cover off and the dude had a full msd wiring kit under the hood ( as in the electrical packs on the valve covers) i just thought it looked sick and im not sure of the value of changing the electrical system lol but just wanted to share
I've been wondering the same thing with the Hemi. Would the Hemi benefit from the use of a MSD or other high energy coil pack and ignition system?
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  #21  
Old 06-23-2014, 09:16 AM
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Re: Any hemi spark plug options?

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Originally Posted by FalconST View Post
I've been wondering the same thing with the Hemi. Would the Hemi benefit from the use of a MSD or other high energy coil pack and ignition system?

I am also interested in this. upgrade coil packs with a sweet spark plug.
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Old 06-23-2014, 09:55 AM
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Re: Any hemi spark plug options?

I have been looking to order these but they say Nickel. Every one talks about copper. Are these the correct plug for my 2012 Overland 5.7 Hemi?
2009-2013 5.7L HEMI Spark Plugs - Mopar # SPLZFR5C11
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  #23  
Old 06-23-2014, 10:53 AM
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Re: Any hemi spark plug options?

Quote:
Originally Posted by 2string1 View Post
I have been looking to order these but they say Nickel. Every one talks about copper. Are these the correct plug for my 2012 Overland 5.7 Hemi?
2009-2013 5.7L HEMI Spark Plugs - Mopar # SPLZFR5C11

Those should work fine.

But I enjoy the hunt for aftermarket improvement, so I'm currently torn between NGK, Denso and Bosch..

NGK Laser Platinum
Denso Iridium Power
Bosch iridium
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  #24  
Old 06-23-2014, 11:12 AM
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Re: Any hemi spark plug options?

Quote:
Originally Posted by 2string1 View Post
I have been looking to order these but they say Nickel. Every one talks about copper. Are these the correct plug for my 2012 Overland 5.7 Hemi?
2009-2013 5.7L HEMI Spark Plugs - Mopar # SPLZFR5C11

That is the set that I used, NGK plugs made for the Hemi.
The owners manual states a gap of 0.043", I had to adjust the NGK plugs as they were all around 0.041". I used a set off feeler gages to check and set the gap.

I know many would rather use the Iridium plugs as they are good for 100,000 miles and are now listed by Mopar. I don't mind changing the plugs every 30K miles, especially being as easy as they are to change.

I would like to learn more about the ignition system and maybe upgrading the coil packs. There has to more that can be pulled from these great engines, especially considering that the Rams are stock at 390HP and the Jeeps are at 360HP, why the difference? Just in the Tuning?

Sorry, not trying to highjack a thread, I will also search the forum to see what I can find.
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