[rjsiecinski]

The ones on the left look perfect, if that's a 16 I will look for a ngk copper in that range. Now the one on the right, is that a factory plug or an autolite xp iridium or double platinum??

Wow, I decide to go to work today, and a war breaks out lol opped out:
To clarify, the pic I posted that @youngsmith53 reposted is of a new Champion Copper (left) and my '14 2.4L stock plug with roughly 12K miles (right). The Champ on the left was installed about a week before that pic, and had maybe 150-200 miles on it when I pulled it to take that pic. Most of my driving is highway, city is relatively light stop and go with a few bursts of "let's have some fun".

Not sure if I'm actually being asked, but for reference, I am running the Spectrum Tuner and Injen CAI; all my other mods wouldn't affect the combustion.

 

[805moparkid]

Wow, I decide to go to work today, and a war breaks out lol opped out: To clarify, the pic I posted that @youngsmith53 reposted is of a new Champion Copper (left) and my '14 2.4L stock plug with roughly 12K miles (right). The Champ on the left was installed about a week before that pic, and had maybe 150-200 miles on it when I pulled it to take that pic. Most of my driving is highway, city is relatively light stop and go with a few bursts of "let's have some fun". Not sure if I'm actually being asked, but for reference, I am running the Spectrum Tuner and Injen CAI; all my other mods wouldn't affect the combustion.

Perfect! Your stock plug is what I was talking about on heat ranges... It's to hot. I guess testing an NGK 6499 is the next step for coppers and maybe the 4469 iridiums. See what they do

 

[rjsiecinski]

Perfect! Your stock plug is what I was talking about on heat ranges... It's to hot. I guess testing an NGK 6499 is the next step for coppers and maybe the 4469 iridiums. See what they do

Glad I could clear the confusion. All 4 stock plugs showed the same combustion (which is a good thing) when I pulled them. I'm hoping to pull the Champions this weekend to check them now that have about 4K on them.

 

[Killraven]

I posted this yesterday but I don't know where the post went. My mpg's increased when I installed the Champion copper plugs. About 2-3mpg.

For some reason I was under the impression that the stock gap was .043 so that's what I gapped the Champions to. The plugs I pulled out which had 18k on them, were all at .043. I may try gapping them to .05 to see if there is any difference.

 

[KrS]

These are the stock plugs, if sitting in the car left to right is 1,2,3,4 then you're seeing 1,2,3,4 left to right here as well.

The factory gap was 40,41,42,42 I set the new ones to 0.050.

She started up like normal, I didn't notice any better low end torque or less delay in the pedal unfortunately. Mileage, we'll have to see how she goes.

Oh and these plugs have a good 10 tanks of 93 octane on them. I was surprised to see them so... ugly. They seem to have a lot of garbage on them. #1 was actually a bit wet (oil), I'll keep an eye on that cylinder.

https://goo.gl/photos/dxQNtW53cGj4GqjGA

 

[DartMontreal]

These are the stock plugs, if sitting in the car left to right is 1,2,3,4 then you're seeing 1,2,3,4 left to right here as well.

The factory gap was 40,41,42,42 I set the new ones to 0.050.

She started up like normal, I didn't notice any better low end torque or less delay in the pedal unfortunately. Mileage, we'll have to see how she goes.

Oh and these plugs have a good 10 tanks of 93 octane on them. I was surprised to see them so... ugly. They seem to have a lot of garbage on them. #1 was actually a bit wet (oil), I'll keep an eye on that cylinder.

https://goo.gl/photos/dxQNtW53cGj4GqjGA

How many km on them?

 

[KrS]

Just over 26,000 km

 

[805moparkid]

Interesting, so a 10 champ iridiums is looking good, maybe a little hot.

Mileage doesn't matter, really you should do one pull and inspect but for a daily that's not worth it. Enough to get that color change is what we need.

 

[DartMontreal]

Just over 26,000 km

I got 75000km on my Dart I will check my plug next weekend. Thanks!

 

[KrS]

I'd say it's looking cold, need maybe one step hotter to burn that crap off.

OH! i forgot to mention too, the new plugs, which are -11 were all less than 0.040 out of the box.

 

[youngsmith53]

Interesting, so a 10 champ iridiums is looking good, maybe a little hot.

for what it's worth, REC10WMPB is the stock OEM Iridium for the chart.

Mileage doesn't matter, really you should do one pull and inspect but for a daily that's not worth it. Enough to get that color change is what we need.

Why does mileage not matter? I'd like to hear your take on that.

I'd say it's looking cold, need maybe one step hotter to burn that crap off.

I agree with your deduction as well, they look like they have some carbon build up in the tip:

an example of carbon (cold) fouling:

 

[805moparkid]

for what it's worth, REC10WMPB is the stock OEM Iridium for the chart. Why does mileage not matter? I'd like to hear your take on that. I agree with your deduction as well, they look like they have some carbon build up in the tip: <img src="http://www.dodge-dart.org/forum/attachment.php?attachmentid=55082"/> an example of carbon (cold) fouling: <img src="http://www.dodge-dart.org/forum/attachment.php?attachmentid=55083"/>

Everything I read the rec10 was the champ recommended, not the factory plug but know I know.

I mean mileage as in miles driven not mpg, we check plugs after every pass when tuning at the track.

Now as far as the tips they look a little black, is that because the heat range or because it's running to rich and a lot of idle time? That one plug tells a good heat range, the rest are to hot.

 

[youngsmith53]

Everything I read the rec10 was the champ recommended, not the factory plug but know I know.

let me double check when I get home, but I am sure that they are rec10's (my wife has the garage so cluttered with this weekends garage/yard sale)

I mean mileage as in miles driven not mpg, we check plugs after every pass when tuning at the track.

that's why I was confused about why you said "Mileage doesn't matter", because that was in reference to how many miles the plugs had on them.

Now as far as the tips they look a little black, is that because the heat range or because it's running to rich and a lot of idle time? That one plug tells a good heat range, the rest are to hot.

What exact heat range are you trying to get at or what optimal spark plug are you looking for? I understand the research (trust me I get research, I do it everyday), but it just seems a little convoluted to my thinking (at least my way of thinking) of how this is going about spark plug research. Instead of trying this plug or that plug, narrow the search down and we all might be able to help assist more. I know, I don't have all the answers (I know I certainly don't claim to have all the answers), but a more narrowed search will be able to gather a lot more data in less time. What I'm getting at is we (the community) want to help, but I'm not sure what the end result/goal is. Are you looking for a longer more sustainable spark plug (iridium type) or are you looking for a better all around copper plug? Are you looking for the best all around plug in general? Hot/Cold/Medium? I know you probably have years (and years (more years than I'll ever have)) of experience on me, but the more information you can provide the more the community can research and the more we can pin point what exactly you are looking for.

 

[805moparkid]

let me double check when I get home, but I am sure that they are rec10's (my wife has the garage so cluttered with this weekends garage/yard sale) that's why I was confused about why you said "Mileage doesn't matter", because that was in reference to how many miles the plugs had on them. What exact heat range are you trying to get at or what optimal spark plug are you looking for? I understand the research (trust me I get research, I do it everyday), but it just seems a little convoluted to my thinking (at least my way of thinking) of how this is going about spark plug research. Instead of trying this plug or that plug, narrow the search down and we all might be able to help assist more. I know, I don't have all the answers (I know I certainly don't claim to have all the answers), but a more narrowed search will be able to gather a lot more data in less time. What I'm getting at is we (the community) want to help, but I'm not sure what the end result/goal is. Are you looking for a longer more sustainable spark plug (iridium type) or are you looking for a better all around copper plug? Are you looking for the best all around plug in general? Hot/Cold/Medium? I know you probably have years (and years (more years than I'll ever have)) of experience on me, but the more information you can provide the more the community can research and the more we can pin point what exactly you are looking for.

I'm sorry I should have layer out what I'm looking to do. We have two types of people (generally) when it comes to plugs. People who change them religiously and those who never will. That's cool, we have coppers and iridiums for those crowds.

Now heat ranges, I will not leave anything alone, I've tweaked everything that I've ever got ahold of. In almost every instance doing the time to tune the plug to the setup have noticeable gains. The reason is is because an off the shelf recommendation is for a stock engine as tested. Maybe you live in Phoenix where our hottest temp is 50* more, or up north where it's below freezing, that alone may or may not require a plug change to be optimal. Then you look at fuel, running base junk versus super or different ethenol contents. Mileage, mods, etc etc all changes the need of your spark plug. The stock plug will probably work good enough in 80% or more of the car it's out in, but it's not the best option usually even stock. To give you an idea I had two different distributors for my 68 dart. Both had a different ignition curve to be optimal for when the fuel changed from winter to summer blends.

Picking the right plug is going to increase mpg, hp/tq=efficiency, drivability for the better. Does that help?

 

[youngsmith53]

@805moparkid perfect, exactly what I think we all were looking for, and I get exactly what you are looking for... it will help everyone involved

 

[youngsmith53]

OEM REC10WMPB Iridium & Autolite 5325 Coppers

OEM REC10WMPB Iridium & Autolite 5325​

I was able to finally get to my auto supply/graveyard stash of "goodies" last night through all of the yard/garage sale stuff my wife has piled in until tomorrow. That being said, I was able to get the pics and information to help out @805moparkid's quest for information on the spark plugs to help out our community. To even further preface all of this is the weather for South Central PA:

Over the course of a year, the temperature typically varies from 19°F to 85°F and is rarely below 6°F or above 92°F. The warm season lasts from May 29 to September 18 with an average daily high temperature above 76°F. The hottest day of the year is July 26, with an average high of 85°F and low of 64°F. The cold season lasts from December 4 to March 3 with an average daily high temperature below 47°F. The coldest day of the year is January 30, with an average low of 19°F and high of 38°F.

OEM REC10WMPB Iridium
The stock OEM plug's are indeed Champion REC10WMPB's.
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The stock OEM REC10WMPB's were installed for 12,521 miles gapped @ 0.043" w/ 2.0 Injen CAI, RRM Pulley, RRM Spectrum & Custom Exhaust installed. Running 93 octane.
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Autolite 5325 Coppers
These are the findings from my 5235 Coppers, DO NOT be alarmed as the Autolites all come with "black" threads as this is their appearance out of the box.

The stock Autolite 5325 Coppers were installed for 7,916 miles gapped @ 0.043" w/ 2.0 Injen CAI, RRM Pulley, RRM Spectrum & Custom Exhaust installed. Running 93 octane.
[table="width: 1500"]
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From my deduction from looking and closely examining the plugs last night and these pictures, in my personal opinion for my setup, the OEM REC10WMPB Iridium's burned way too hot for me due to the view of the wear and the look of the thread. The Autolite 5325 Coppers' on the other hand show very little wear on the thread as it is only going down a few threads as opposed to the Iridium's. It should also be noted that when I did install the Autolites I was doing further testing running without the Spectrum tune as well as doing some CAI vs. SRI testing, thus potentially affecting air quality and flow. Also, I ran 1 tank of E-Free 91 Octane with my Autolites installed, one tank should not have an affect, but I am giving all the information I can to assist.

Overall, I'm pleased to see no issues with the spark plugs (not too hot (maybe the iridium's), not too cold, no carbon fouling, no oil fouling, no pre-detonation, not lean) in my opinion they look like they are wearing nice (especially the Autolite's). I will add further information to this thread as well as copy this post into my own build thread for those that follow along there. Hopefully these pics will help out @805moparkid as well as the rest of the community to find the optimal plug for one's needs for ones enviornment.

 

[805moparkid]

OEM REC10WMPB Iridium & Autolite 5325 I was able to finally get to my auto supply/graveyard stash of "goodies" last night through all of the yard/garage sale stuff my wife has piled in until tomorrow. That being said, I was able to get the pics and information to help out @805moparkid's quest for information on the spark plugs to help out our community. To even further preface all of this is the weather for South Central PA: Over the course of a year, the temperature typically varies from 19°F to 85°F and is rarely below 6°F or above 92°F. The warm season lasts from May 29 to September 18 with an average daily high temperature above 76°F. The hottest day of the year is July 26, with an average high of 85°F and low of 64°F. The cold season lasts from December 4 to March 3 with an average daily high temperature below 47°F. The coldest day of the year is January 30, with an average low of 19°F and high of 38°F. OEM REC10WMPB Iridium The stock OEM plug's are indeed Champion REC10WMPB's. [table="width: 750"] [tr] [td]<img src="http://www.dodge-dart.org/forum/attachment.php?attachmentid=55101"/>[/td] [td]<img src="http://www.dodge-dart.org/forum/attachment.php?attachmentid=55102"/>[/td] [/tr] [/table] The stock OEM REC10WMPB's were installed for 12,521 miles gapped @ 0.043" w/ 2.0 Injen CAI, RRM Pulley, RRM Spectrum & Custom Exhaust installed. Running 93 octane. [table="width: 1500"] [tr] [td]<img src="http://www.dodge-dart.org/forum/attachment.php?attachmentid=55103"/>[/td] [td]<img src="http://www.dodge-dart.org/forum/attachment.php?attachmentid=55104"/>[/td] [td]<img src="http://www.dodge-dart.org/forum/attachment.php?attachmentid=55105"/>[/td] [/tr] [/table] Autolite 5325 Coppers These are the findings from my 5235 Coppers, DO NOT be alarmed as the Autolites all come with "black" threads as this is their appearance out of the box. <img src="http://www.dodge-dart.org/forum/attachment.php?attachmentid=55106"/> The stock Autolite 5325 Coppers were installed for 7,916 miles gapped @ 0.043" w/ 2.0 Injen CAI, RRM Pulley, RRM Spectrum & Custom Exhaust installed. Running 93 octane. [table="width: 1500"] [tr] [td]<img src="http://www.dodge-dart.org/forum/attachment.php?attachmentid=55107"/>[/td] [td]<img src="http://www.dodge-dart.org/forum/attachment.php?attachmentid=55108"/>[/td] [td]<img src="http://www.dodge-dart.org/forum/attachment.php?attachmentid=55109"/>[/td] [/tr] [/table] From my deduction from looking and closely examining the plugs last night and these pictures, in my personal opinion for my setup, the OEM REC10WMPB Iridium's burned way too hot for me due to the view of the wear and the look of the thread. The Autolite 5325 Coppers' on the other hand show very little wear on the thread as it is only going down a few threads as opposed to the Iridium's. It should also be noted that when I did install the Autolites I was doing further testing running without the Spectrum tune as well as doing some CAI vs. SRI testing, thus potentially affecting air quality and flow. Also, I ran 1 tank of E-Free 91 Octane with my Autolites installed, one tank should not have an affect, but I am giving all the information I can to assist. Overall, I'm pleased to see no issues with the spark plugs (not too hot (maybe the iridium's), not too cold, no carbon fouling, no oil fouling, no pre-detonation, not lean) in my opinion they look like they are wearing nice (especially the Autolite's). I will add further information to this thread as well as copy this post into my own build thread for those that follow along there. Hopefully these pics will help out @805moparkid as well as the rest of the community to find the optimal plug for one's needs for ones enviornment.

Thanks for the info, I will be back next week where I can get us some plug numbers in NGK's in copper and iridiums.

One thing is a member states the ngk's need the Z due to the electronic, I seriously doubt that is gonna cause issues as the coppers are not going to be Z rated

 

[youngsmith53]

Thanks for the info, I will be back next week where I can get us some plug numbers in NGK's in copper and iridiums.

One thing is a member states the ngk's need the Z due to the electronic, I seriously doubt that is gonna cause issues as the coppers are not going to be Z rated

Let me know, I don't mind swapping out another set of coppers next month when I do my fall tune up/oil change. I'll do some research on my end as well...

 

[805moparkid]

Let me know, I don't mind swapping out another set of coppers next month when I do my fall tune up/oil change. I'll do some research on my end as well...

the first ngk is gonna be a guess as we don't know what an auto light converts to, rather go a step cold to start than to hot

 

[youngsmith53]

Had some extra time and did some research this afternoon to compatible part numbers from known good (working) part numbers. Enjoy!

Autolite XP Iridium - XP5325: (Please note that not all below are iridium plugs)
Bosch 4431 / Bosch 4516 / E3 - E3.68 / Denso 5344 / NGK 1208 / NGK 3588 / NGK 3656 / NGK 4469 / NGK 4904 / NGK 5245 / NGK 5443 / NGK 5588 / NGK 6159 / NGK 6481 / NGK 6619 / NGK 7913

Autolite Double Platinum - APP5325: (Please note that not all below are platinum plugs)
Bosch 4316 / Champion 7975 / Champion 975 / Champion REC10PYC4 / Champion REC10YC4 / Denso 3381 / Denso 5343 / E3 - E3.68 / NGK 1116 / NGK 1119 / NGK 3672 / NGK 4704 / NGK 5788 / NGK 6240 / NGK 6376 / NGK 7654

Just remember these are the main factors when looking for compatible (2.0/2.4) spark plugs:
Hex: 5/8 inch
Spark Plug Reach: 1.000 inch
Spark Plug Thread Size: 14 mm