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post #1 of 31 (permalink) Old 09-28-2006, 01:36 PM Thread Starter
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Iridium Spark Plugs

Just wondering if anyone has used Iridium Plugs, and if so, where could I get (or order some)? a lot of websites only sell 'em for the Grand Cher. That would be it wouldn't it?

Also, did you notice a difference with 'em?
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post #2 of 31 (permalink) Old 09-29-2006, 10:00 AM
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Re: Iridium Plugs ???

Check the G/C oem plug type. If it's the same for the CDR, put same Irid. plug in the CDR.
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post #3 of 31 (permalink) Old 09-29-2006, 06:43 PM
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Re: Iridium Plugs ???

I put them in my my 03 Liberty, I couldn't believe the performance increase for just plugs. I got mine at Autozone.

I tried to get them for our 02 Grand Cherokee w/inline 6. Autozones data base didn't list the iridium plug for it. The guy said it was a hotter plug, so that's probably why. (go figure) Reading up on the NGK site, it says it has a smaller tip made of iridium, since the tips so small, it takes less voltage to fire the plug. More efficient, lasts longer. I like them and will buy again if the plug lasts.

IMO, if it dosen't list it for the XK, I wouldn't put them in without dropping NGK an email. Just to be sure.

I hope NGK lists it, or says the plug for the 4.7 in the GC will work, by the time I'm ready to change them in the XK!

Mango~Ridge

Last edited by Mango~Ridge; 09-29-2006 at 06:50 PM.
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post #4 of 31 (permalink) Old 09-30-2006, 10:24 AM Thread Starter
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Re: Iridium Plugs ???

Thanks Mango,
I've been away from home so long, I've never heard of Iridium untill this forum. Didn't know if they were a special order item or if you could pick 'em up from the local auto store.
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post #5 of 31 (permalink) Old 09-30-2006, 03:38 PM
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Re: Iridium Plugs ???

Iridium plugs are awesome. I havent installed them in the commander yet, but advance auto and autozone both list them for the commander. I will change them out when I go to synth oil at 3K. Will also install the K&N at that time, and will disconnect the battery to clear the computer so it all starts fresh with the iridium plugs, synth oil, and K&N. Will be interesting to see what it all yeilds.

I use NGK Iridium plugs in my Olds 442, and they made a huge improvement in cold starts, smoothness, and better idle quality. Not sure of more power, just smoother, revs quicker, and takes advantage of hi voltage coils. Denso makes Iridium plugs too, but I prefer the NGK's. YMMV

But, almost anything is better than the champion crap that is in there.
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post #6 of 31 (permalink) Old 09-30-2006, 04:12 PM Thread Starter
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Re: Iridium Plugs ???

Quote:
Originally Posted by Bulldog9
Iridium plugs are awesome. I havent installed them in the commander yet, but advance auto and autozone both list them for the commander. I will change them out when I go to synth oil at 3K. Will also install the K&N at that time, and will disconnect the battery to clear the computer so it all starts fresh with the iridium plugs, synth oil, and K&N. Will be interesting to see what it all yeilds.

I use NGK Iridium plugs in my Olds 442, and they made a huge improvement in cold starts, smoothness, and better idle quality. Not sure of more power, just smoother, revs quicker, and takes advantage of hi voltage coils. Denso makes Iridium plugs too, but I prefer the NGK's. YMMV

But, almost anything is better than the champion crap that is in there.
Do you have to call them, for the Iridiums? I couldn't find 'em anywhere on those two sites.
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post #7 of 31 (permalink) Old 10-01-2006, 09:06 AM
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Re: Iridium Plugs ???

Quote:
Originally Posted by bravo2376
Do you have to call them, for the Iridiums? I couldn't find 'em anywhere on those two sites.
Here is a link. I just log onto the site, tell them what vehicle I have, and then the part type.

THis link is for the Iridium plugs,

http://www.partsamerica.com/ProductD...pe=960&ptset=A

This link is for the Spark Plug page.

http://www.partsamerica.com/ProductL...or=Spark+Plugs

Not sure these will work, I'm not too savvy with this stuff.
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post #8 of 31 (permalink) Old 10-01-2006, 09:29 AM Thread Starter
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Re: Iridium Plugs ???

Quote:
Originally Posted by Bulldog9
Here is a link. I just log onto the site, tell them what vehicle I have, and then the part type.

THis link is for the Iridium plugs,

http://www.partsamerica.com/ProductD...pe=960&ptset=A

This link is for the Spark Plug page.

http://www.partsamerica.com/ProductL...or=Spark+Plugs

Not sure these will work, I'm not too savvy with this stuff.
The first link was perfect. THX. Just ordered 8 of those suckers. Better be worth it The wife is gonna start hiding all my cards Backwards huh?
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post #9 of 31 (permalink) Old 12-03-2006, 08:50 PM
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Re: Iridium Plugs ???

I'm working on putting in the new Bosch Platinum/Iridium Fusion plugs. My stupid question is, where are the plugs located? Are they the eight cylindrical towers on top of the engine surrounding the air intake? I hope so since there is no clearance on the sides of the V8 where I'm used to seeing plugs. I didn't see any plug wiring down there so I hope that's a good sign.

Mike
06 Commander 4.7l

Last edited by harrnack; 12-03-2006 at 09:28 PM.
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post #10 of 31 (permalink) Old 12-03-2006, 08:53 PM
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Re: Iridium Plugs ???

Quote:
Originally Posted by harrnack
My stupid question is, where are the plugs located?
Which engine do you have? The 5.7L has 16 plugs.

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