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Unread 08-12-2008, 11:25 AM   #1
kronos
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Best Spark Plugs To Replace Oem Ones

Would Like To Know The Best Spark Plugs That Will Deliver Mpg And Horsepower Performance For My Sahara 2008 Jk 3.8l V6. Have Read Many Articles On Bosch, Splitfire, E3.....etc. Does Anyone Have Advice And/or Experience With Different Brands?

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Unread 08-12-2008, 11:36 AM   #2
jeff408
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I went into an Auto Zone store last weekend looking for a better plug for the same thing as you and I was told none of the high tech plugs were avaiable for them yet. He said the stock plug was a platinum plug. I'm still looking for a high tech plug also.
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Unread 08-12-2008, 11:52 AM   #3
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You guys are aware that the stock platinum plug is good for a ridiculous amount of miles, unlike plugs from years ago.

I used to work at O'Reilly's while I as in college. Splitfire is junk. Chrysler products usually run well with Champion plugs. Champion does make a platinum, which is probably what's in there right now.

Bosch Platinum is OK, but never, ever put them in an old engine that burns oil. They foul extremely easy.

Autolite Platinum and Autolite Double Platinum is good, although some people haven't really liked them in Dodge/Chrysler products.

Nippondenso Iridium is an excellent plug, particularly in Japanese and marine engines.

I don't know exactly what plugs are in the JK, but my experience has been that automobile manufacturers rebadge other brands and sell it as their own such Motorcraft plugs being the same as Autolite. One of the exceptions to this is AC Delco. AC Delco makes platinum plugs and is used as OEM equipment on many GM products. Most people report poor performance when using AC Delco plugs on Chrysler / Dodge products even though they are correct for the application.

In summary, changing plugs on such a low mileage JK is a waste of time and money. Keep in mind, this engine has one coil per plug, so it's already getting as good of a spark as it is going to get.

Not trying to be negative here, but just putting forth some useful information.
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Unread 08-12-2008, 01:16 PM   #4
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I'm running denso Iridium in mine

ITL16 is what it calls for stock, same plugs as the Hemi
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Unread 08-12-2008, 02:51 PM   #5
Smelt_one
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I'm running Immodium-AD quadra-spark teflon wound dual insulator plugs on mine. Seems to run with the wolves pretty good.
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Unread 08-12-2008, 03:28 PM   #6
XpensiveWino
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I wouldn't bother. Its just another reason for Jeep to void your warranty and it's not going to give you anything worth the $$ anyway.
Kind of like a "cold" air intake, not worth the money.
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Unread 08-12-2008, 03:33 PM   #7
rirrgang
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I'm running Hype-Tech 2000's with the unobtainium tips. Gas mileage is way up. Hp and torque through the roof. Funny that you can actually get more HP without burning more gas. Must be the plugs. It's a shame that Chrysler hasn't figured it out.
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Last edited by rirrgang; 08-12-2008 at 08:35 PM..
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Unread 08-12-2008, 04:45 PM   #8
Ursharak
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anyone find a sparkplug wiring kit for JK?

anyone find a sparkplug wiring kit for JK? - and please dont give me **** about wasting my money .... i will burn my cash where i want to
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Unread 08-12-2008, 04:47 PM   #9
ChicagoGuy
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For the unobtainium ones to work, you need to introduce additional cooling, which you neglected to mention. I would suggest getting the ram air add-on to the AEV snorkel and run a direct bypass to the block to cool the plugs at speed.

x2 on the Champion platinums, years from now when you'll need to replace the stock ones. Splitfire is junk.
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Unread 08-12-2008, 05:33 PM   #10
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Quote:
Originally Posted by Ursharak View Post
anyone find a sparkplug wiring kit for JK? - and please dont give me **** about wasting my money .... i will burn my cash where i want to
Dude, you are wasting money.
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Unread 08-12-2008, 05:36 PM   #11
rirrgang
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My bad, the cooling is fundamental. To help in that dept I have introduced the "Mr. Water Jet 500". If a little is good, more is better. A simple device inserted directly in to the Air Cleaner box, allows a stream of water to the intake system to cool down those hot plugs. Of course, the side benefit to all this is the splitting of the two hydrogen atoms from common H2O when the water hit the stainless steel tornado I installed.
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Unread 08-12-2008, 06:05 PM   #12
XpensiveWino
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Dude, you are wasting money.
Dude, he IS wasting money.
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Unread 08-12-2008, 06:06 PM   #13
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Snake oil............. Live and learn.
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Unread 08-12-2008, 06:17 PM   #14
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Originally Posted by XpensiveWino View Post
Dude, he IS wasting money.
Yes, but he didn't want you to tell him that.... he already knows....
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Unread 08-12-2008, 06:42 PM   #15
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Originally Posted by BuzzHog View Post
Yes, but he didn't want you to tell him that.... he already knows....
If he did'nt know then, he know now he's wasting his money. So now he knows he knows.
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