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Denso plugs: Which one is best?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by User Name01, Jul 5, 2014.

  1. Jul 5, 2014 at 6:36 PM
    #1
    User Name01

    User Name01 [OP] Little boy from FairyTale Land

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  2. Jul 5, 2014 at 7:42 PM
    #2
    lyodbraun

    lyodbraun Well-Known Member

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    Stick with what came on the truck regular denso plugs... Just changed mine today...
     
  3. Jul 5, 2014 at 7:46 PM
    #3
    Madcat207

    Madcat207 Well-Known Member

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    Curious.. why would you advise to use an inferior product? From all my reading, the iridium last a stupid long time, and they should spark just like anything else... so.......?
     
  4. Jul 5, 2014 at 9:54 PM
    #4
    User Name01

    User Name01 [OP] Little boy from FairyTale Land

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    What I was thinking. Iridium is better, according to everything that I have read on here. I just don't know which ones.
     
  5. Jul 6, 2014 at 9:18 AM
    #5
    hotrod53

    hotrod53 Well-Known Member

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    I don't think that you can go wrong with the Iridiums.... 100K and stock for most Toyota products. I'd check ebay and www.rockauto.com though, your price may be a bit high.
     
  6. Jul 6, 2014 at 11:55 AM
    #6
    nd4spdbh

    nd4spdbh Well-Known Member

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    Toyota designed the engine to run with the standard copper core plugs.... use them. They actually produce a better spark than iridiums as there is much more of a sharp edge than the small iridium center electrode.
     
  7. Jul 6, 2014 at 12:01 PM
    #7
    meeestirg

    meeestirg Well-Known Member

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    this is exactly what i was planning to do this weekend, subbed for a final answer.
     
  8. Jul 6, 2014 at 4:12 PM
    #8
    Hugh Morron

    Hugh Morron Manic Mechanic

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    When I change my plugs I am going with the NGK Iridium plugs. When working on motorcycles(rice burners), NGK was the better plug and Denso was second choice. But that is just my opinion.
     
  9. Jul 6, 2014 at 4:21 PM
    #9
    nd4spdbh

    nd4spdbh Well-Known Member

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    its funny on the plugs that come in the 3.4L 5VZ-FE in the 1st gen taco, they are as every other yota motor split NGK / DENSO ... and for those style of plugs (dual ground center electrode) the NGK's showed MUCH less wear on them time and time again compared to the denso's

    But its seemes to be just the opposite with the 4.0L 1GR-FE, the densos wear much better than the NGK's

    Id vote pull a plug from either side and see which one looks better and go with that brand.
     
  10. Jul 6, 2014 at 7:21 PM
    #10
    F75gunslinger

    F75gunslinger Ka like a wheel

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    Everything I have read says to use the same plugs ( denso replacements). They were great for the time I ran them..so why switch ?
     
  11. Jul 6, 2014 at 10:17 PM
    #11
    mesohungry

    mesohungry Active Member

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    Denso's looked in much better shape than the NGK's when I removed them today, just bought the truck, and decided to do a 60k. guess the original owner never changed them.
     
  12. Jul 6, 2014 at 10:22 PM
    #12
    medic2230

    medic2230 @Koditten Pirate Radio member #002

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    ^^^this
     
  13. Jul 6, 2014 at 10:49 PM
    #13
    TrdSurgie

    TrdSurgie revised

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    They spark better because copper conducts better. Since copper conducts better it doesn't last as long as iridium.
     
  14. Jul 7, 2014 at 1:57 PM
    #14
    BlazeTaco

    BlazeTaco Well-Known Member

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    The standard copper core plugs do not have a copper tip. It is a nickel alloy which is still softer than iridium. A copper tip would be way to soft to be used in a combustion engine it would probably be shot the first time you ran it. Iridium plugs also have a copper core, but it is tipped with iridium. A website with a good description. https://www.sparkplugs.com/glossary/8/spark-plug/N
     
  15. Jul 8, 2014 at 2:18 PM
    #15
    User Name01

    User Name01 [OP] Little boy from FairyTale Land

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    I replaced my plugs with the IKH20 plugs. I feel the trck different, a good different. So far the start up is smoother/quicker, i feel a more solid pull at low RPM. Then again, it might all be psychological.
     
    Last edited: Jul 8, 2014
  16. Jul 8, 2014 at 6:10 PM
    #16
    TnShooter

    TnShooter Well-Known Member

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    I used the same ones that were in it. The stock plug.
    I haven't updated my ignition and can't see how I'd benefit much from better plugs.
    I plan to change my plugs again in 60k miles.
    It's not that hard to do on these trucks.
     
  17. Jul 8, 2014 at 9:18 PM
    #17
    TrdSurgie

    TrdSurgie revised

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    Its 30k mile intervals.
     
  18. Jul 8, 2014 at 9:39 PM
    #18
    TnShooter

    TnShooter Well-Known Member

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    You are correct. And I personally think this is only to comply with the Emissions Control warranty. I no longer have any warranty, so I'm opting for the 60k intervals. Not saying it is the what anyone else should do. It's just what I'm doing.
     
  19. Jul 8, 2014 at 9:41 PM
    #19
    pinktaco808

    pinktaco808 Hot Steppa

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    anyone have a how to on changing the spark plugs? i never changed it on my truck or any car before. I have the 4 cylinder truck single cab. I have the spark plug and most of the tools any help thanks.
     
  20. Jul 9, 2014 at 6:57 AM
    #20
    User Name01

    User Name01 [OP] Little boy from FairyTale Land

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