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#2822716 - 12/03/12 05:31 PM Spark plug for Dodge Magnum, 5.7 Hemi?
Tommyboy Offline


Registered: 04/21/03
Posts: 99
Loc: Oak Harbor, WA
Dodge recommends a standard copper plug for this engine. I'd like to go Platinum or iridium for longer changes than 30k miles. Any thoughts on a great plug for this car?
Tom

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#2822723 - 12/03/12 05:38 PM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
SLCraig Offline


Registered: 12/21/08
Posts: 5291
Loc: London, ON, Canada
Are you sure you really want to go plat or iridium? You have to buy 16 of them.

Usually when they recommend copper there is also a reason but I am not a 5.7 pro.
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#2822729 - 12/03/12 05:41 PM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
cmorr Offline


Registered: 12/10/06
Posts: 621
Loc: Exeter Twp, PA
Originally Posted By: Tommyboy
Dodge recommends a standard copper plug for this engine. I'd like to go Platinum or iridium for longer changes than 30k miles. Any thoughts on a great plug for this car?
Tom


I had a hemi based Magnum prior to trading it in for my Challenger. From experience I absolutely recommend the oe Champion Copper plug.

BTW - The oe plug in the 6.1 is double platinum
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2006 Caravan Defy 5W20 Napa Gold
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#2822860 - 12/03/12 07:16 PM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
hounddog Offline


Registered: 09/01/05
Posts: 1060
Loc: Ila Georgia,outside Athens Geo...
Dodge does not recommend a STANDARD nickel tip plug for this engine. It COMES with a cheap plug due to cost factors. The COP 5.7 and the HYBRID 5.7 come with 100k platinum. Most ALL plugs are COPPER CORED. Its the TIP thats are made of different materials to increase long or short plug life. I was not about to change those low end plugs every 30k. I used Autolites XP5325s I believe. Yes they have a COPPER CORE and Iridium fine wire tips. 100,000 PLUS mile life expectancy with slightly better idle and slight fuel mileage increase. Less carbon build up is also advertised. Lookup FINE WIRE PLUGS. Big in the aviation industry. I bought on Amazon.com and Autolite has a $2.00 rebate per plug coupon on the Autolite sight. I've put 10,000 miles on them. Many plugs to choose from including over7r the Chrysler parts counter Platinums. Do NOT use a pulse duration plug. They have mini volt bleed over. Skipping,charge system issues. GM has a tech bulletin out on them.
_________________________
03 Dodge 3500 dually,08 Corvette convertible.09 Dodge 1500 5.7 2wd quad 3.92 gear,2010 Gran Marquis.

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#2822866 - 12/03/12 07:20 PM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
hounddog Offline


Registered: 09/01/05
Posts: 1060
Loc: Ila Georgia,outside Athens Geo...
The OE plug is NOT a Champion. Its NGK these days and I absolutely would NOT use them again. Every 30k. Chezz that time frame on plugs is long over8 with. My 2008 vette has a 100,000 mile plug as does my 2010 Mercury Marquis.
_________________________
03 Dodge 3500 dually,08 Corvette convertible.09 Dodge 1500 5.7 2wd quad 3.92 gear,2010 Gran Marquis.

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#2822868 - 12/03/12 07:20 PM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
hounddog Offline


Registered: 09/01/05
Posts: 1060
Loc: Ila Georgia,outside Athens Geo...
The OE plug is NOT a Champion. Its NGK these days and I absolutely would NOT use them again. Every 30k. Chezz that time frame on plugs is long over8 with. My 2008 vette has a 100,000 mile plug as does my 2010 Mercury Marquis.
_________________________
03 Dodge 3500 dually,08 Corvette convertible.09 Dodge 1500 5.7 2wd quad 3.92 gear,2010 Gran Marquis.

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#2822899 - 12/03/12 07:41 PM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
bourne Offline


Registered: 12/20/06
Posts: 1299
Loc: Greenwood, IN
Just use Denso or NGK iridiums, your engine will thank you. Use A124 or ES123 at AAP and get a discount on them. Makes it more economical for you. The new Bosch Iridium plugs are also surprisingly well made.

NGK Iridium IX Part # LZTR4AIX-11
Denso Iridium Power Part # ITL16
Bosch OE Fine Wire Iridium Part # 9654

*Disclaimer : I used 2007 Dodge Magnum 5.7l Engine as the spec vehicle. If yours is different, I suggest rechecking the part # using the respective websites.
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#2822939 - 12/03/12 08:23 PM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: hounddog]
cmorr Offline


Registered: 12/10/06
Posts: 621
Loc: Exeter Twp, PA
Originally Posted By: hounddog
The OE plug is NOT a Champion. Its NGK these days and I absolutely would NOT use them again. Every 30k. Chezz that time frame on plugs is long over8 with. My 2008 vette has a 100,000 mile plug as does my 2010 Mercury Marquis.


The exact OE plugs I pulled from my 2008 Magnum and replaced.



_________________________
2008 Focus Mobil 1 5W20 Napa Platinum
2006 Caravan Defy 5W20 Napa Gold
2003 PT Cruiser PYB 5W30 Pureone

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#2823088 - 12/04/12 12:24 AM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
chevman4life Offline


Registered: 05/18/11
Posts: 196
Loc: TX
My 2010 Ram dame with NGK nickel platted plugs. After 36k I had them changed and were chewed up, and I drive 50 miles a day, 85% highway. That's using 89 octane from Shell or Chevron.
_________________________
1982 Chevy C10, 210k
1988 Buick Estate Wagon
1996 E300D, 177k
2005 Ford Mustang V6, 104k, Amsoil 10W30
2010 Ram 1500 HEMI, 83k, Amsoil 0W30

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#2823305 - 12/04/12 08:33 AM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
hounddog Offline


Registered: 09/01/05
Posts: 1060
Loc: Ila Georgia,outside Athens Geo...
Champion was obviously dropped. The term 'chewed up' is not very realistic. The tips wear and the gap gets larger. I have read and had techs tell me they NEVER see worn out at 30k on 5.7s. Some run them 50 or 60k these days. Mine at 30,000 had minimal wear. I wanted them out so I would not have to think about them for years and 100,000 miles.


Edited by hounddog (12/04/12 08:34 AM)
_________________________
03 Dodge 3500 dually,08 Corvette convertible.09 Dodge 1500 5.7 2wd quad 3.92 gear,2010 Gran Marquis.

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#2824151 - 12/04/12 07:51 PM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
chevman4life Offline


Registered: 05/18/11
Posts: 196
Loc: TX
Well, being realistic or not, when I took them out they looked like [censored] compared to my sisters Pontiac with 2.2 Ecotec and 100k. Seems people on here take an expression to literally. Not sure what those Tech's are seeing but talk to the ones at Grapevine Dodge about it, which is what I did. Totally different story.
_________________________
1982 Chevy C10, 210k
1988 Buick Estate Wagon
1996 E300D, 177k
2005 Ford Mustang V6, 104k, Amsoil 10W30
2010 Ram 1500 HEMI, 83k, Amsoil 0W30

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#2824947 - 12/05/12 02:13 PM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 14856
Loc: Sunny Florida
Note that the 6.1 ships with NGK iridium/platinum hybrids, factory replacement is at 100k miles.

The 5.7 runs great on almost any plug. Pick one based on how often you like to fool with them.
_________________________
"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix

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#2825443 - 12/05/12 10:23 PM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
hounddog Offline


Registered: 09/01/05
Posts: 1060
Loc: Ila Georgia,outside Athens Geo...
STEVESRT8 is right on. Mine looked great at 30k. The guys on the truck forumns all say the same. Whatever. 5.7 is easy on oil and plugs
_________________________
03 Dodge 3500 dually,08 Corvette convertible.09 Dodge 1500 5.7 2wd quad 3.92 gear,2010 Gran Marquis.

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#2825559 - 12/06/12 04:57 AM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 14856
Loc: Sunny Florida
I know a few Hemi owners and many of them have run the stock Champs WAYYYY past the recommended 30k interval without a code.

I think it's just a bean counter savings thing. The 5.7 is a very high volume engine and uses 16 plugs, so some savings looks good to the accountants. The 6.1 was a showcase and very profitable in a high end car, thus it gets the good stuff.
_________________________
"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix

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#2825681 - 12/06/12 09:20 AM Re: Spark plug for Dodge Magnum, 5.7 Hemi? [Re: Tommyboy]
coolbird101 Offline


Registered: 11/22/12
Posts: 340
Loc: South Florida
I see alot of guys on Dodge forums have check engine lights and issues when trying non copper plugs on the hemi, think I read that copper is the best conductor for spark plugs but also the shortest lived.

cb
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2013 Mazda 6
Valvoline Synpower 0w/20
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2005 Dodge Ram hemi
Valvoline Synpower 5w/20
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