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Iridium or Copper Plugs for V6 Tacomas?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by SurfnWolf, Nov 17, 2008.

  1. Nov 17, 2008 at 6:30 AM
    #1
    SurfnWolf

    SurfnWolf [OP] Well-Known Member

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    Well about to do the 30,000 maintenance. Anybody here change over to the Iridium plug? and hows the truck running? would like to here any positives or negatives from the iridiums? any pinging? The Dealers services techs advise against it, but wanted to here whats really happening?

    Brian
     
  2. Nov 17, 2008 at 11:27 AM
    #2
    RCBS

    RCBS "Cause I'm mighty proud of that ragged old flag."

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    mine's due as well. i'm going iridium. don't want to have to change the plugs every 30k. havn't heard much about performance with them though. why did the techs advise against them? they put Denso's in the truck at the factory...well one side anyways. don't see why iridium Denso's would be bad.?
     
  3. Nov 17, 2008 at 11:52 AM
    #3
    fasn8dave

    fasn8dave Hey guys watch THIS!

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    I went iridium as well. It cost a little extra, but they're 120,000 mile plugs!!! WOOT!
     
  4. Nov 17, 2008 at 11:56 AM
    #4
    Joe B

    Joe B Well-Known Member

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    Why aren't Iridium plugs factory installed?:confused:
     
  5. Nov 17, 2008 at 12:10 PM
    #5
    genxer36

    genxer36 Lord of Tomfoolery

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    I'm using iridium NGK plugs. I found them cheaper at Advanced auto parts. I think I paid around $60 for a set. They were the same price there as the platinum plugs. So far so good.
     
  6. Nov 17, 2008 at 12:11 PM
    #6
    kmrofka

    kmrofka Im so hungry i can ride a horse...

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  7. Nov 17, 2008 at 12:18 PM
    #7
    Demoncleaner

    Demoncleaner Well-Known Member

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    I ran what it came with. Denso coppers set me back a whole $2.50 ea. Every 3 yrs, I can deal w/ that.
     
  8. Nov 17, 2008 at 12:47 PM
    #8
    SurfnWolf

    SurfnWolf [OP] Well-Known Member

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    I bet I put 20,000 a year on a truck, thats why Im thinking about trying the iridiums.. only having to change every 100,000 is kinda nice. not that it takes to long. I just question if anyone if having any problems, since these are not stock plugs? good to see one on here having no problems
     
  9. Nov 17, 2008 at 1:05 PM
    #9
    mr.trd

    mr.trd Are you Recreationally Insane?

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    I hate to go against the grain, but go with the coppers. Yeah you change them more often, but it also gives you a chance to pull them more often and make sure everything is burning correctly and, iridiums will never last the full mileage they say. I tried the iridium thing back in the day and after about 40,000 miles they just don't fire as well. Save your money and just go copper, in the long run, you will have better overall average gas mileage. They call it maintenance for a reason. Not put them in and forget about them. Sorry to stir things up that that is just what I have found from my own happenings.
     
  10. Nov 17, 2008 at 1:12 PM
    #10
    jrws6

    jrws6 Well-Known Member

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    Bump ^1
     
  11. Nov 17, 2008 at 1:20 PM
    #11
    Joe B

    Joe B Well-Known Member

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    +1
    I'll stay with the copper when the time comes.
    Copper is the standard plug for some reason and I don't believe it's to save Toyota a couple of dollars.
     
  12. Nov 17, 2008 at 1:36 PM
    #12
    aaronatl

    aaronatl ©1975

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    specific electrical resistance

    Silver 1.59
    Copper 1.72
    Gold 2.44
    Aluminum 2.82
    Tungsten 5.60
    Iron 10.0
    Iridium 11.0 (platinum family)
     
  13. Nov 17, 2008 at 3:51 PM
    #13
    mr.trd

    mr.trd Are you Recreationally Insane?

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    Ok, that is good info, but only good if you plan on taking your iridium plugs out every 30,000 miles and regapping them. They forget to mention that to you. So at first they are the lowest, but when the gap increases, so the chance for a misfire. And believe me the gap increases because the center electrode shortens in time as it fires. Like I stated earlier, I have played with them. I ran the NGK iridiums in my Bimmer and 40,000 miles later when it idled like crap I replaced them with copper I checked the gap and it went from .032 to .060. The new coppers run great.
     
  14. Nov 17, 2008 at 4:07 PM
    #14
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    I could not agree more!
     
  15. Nov 25, 2008 at 3:21 PM
    #15
    Teufel Hunden

    Teufel Hunden No Better Friend, No Worse Enemy

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    My truck only has a little over 1000 miles on it so I am far from making a decision. I agree with what both of you have said, but I still have one question: if the iridiums are so bad, why are they standard from the factory on the 2.7, and why do they come with the supercharger kit for the 4.0? I am not questioning either of you. You both know a hell of a lot more about mechanics than I do, and like I said, I agree with what you have said. I am just curious.
     
  16. Nov 25, 2008 at 3:24 PM
    #16
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    i have stuck to using copper denso's when i have changed the plugs on the 06 i had, and when i changed them on my 04. i aint paying over $5 for a spark plug. and i dont mind changing them every 30k miles.........easy as pie to do anyway.....plus i like working on my truck.:)
     
  17. Nov 25, 2008 at 3:31 PM
    #17
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    The iridium plugs are a "cooler" temp plug, so when super charged, they resist pre detonation. As for the 2.7, the ignition system is desigened to work best with the iridium plugs. On the 4.0, the ignition is designed to use a copper plug. Every plug, copper, iridium, platinum, unubtainium, etc., has a different resistance. Too much variation in this value can effect the opperation.
     
  18. Nov 25, 2008 at 3:36 PM
    #18
    Teufel Hunden

    Teufel Hunden No Better Friend, No Worse Enemy

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    Now that makes a lot of sense! Thanks for the clarification!
     
  19. Nov 25, 2008 at 3:46 PM
    #19
    mr.trd

    mr.trd Are you Recreationally Insane?

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    And if you talk to people who do alot of forced induction, they will tell you that the right temperature range of copper plug is better than just running the factory temperature range iridium plug. I think TRD does it strictly for the look of "Hey you get iridium plugs with the $4000 charger!" Now it's worth it.

    I tried the iridium plugs in my '98 supercharged tacoma and when I switched to the coppers I got from URD it ran much better, because they were the correct temperature and had the right resistence. Resistence is a big thing with these vehicles nowadays and all the computerized junk that goes with them.
     
  20. Nov 25, 2008 at 4:02 PM
    #20
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    X2. I, too, ended up useing a cooler range copper plug on my 2000 Sc'ed Taco.
     
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