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TRD supercharger drivers side spark plug change WITHOUT pulling SC

Discussion in 'Performance and Tuning' started by CtTaco, Dec 10, 2013.

Page 3 of 3
  1. Jun 15, 2021 at 6:00 PM
    #41
    JaxJacket

    #41
    JaxJacket Well-Known Member

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    Something wrong about those pictures. Iridium should erode the side electrode not the center electrode. Just took mine out at 90k and the center looks almost new. Zoom in on some of the previous pictures as well.

    20210608_213955.jpg
     
    JaxJacket, Jun 15, 2021
    #41
  2. Jun 16, 2021 at 6:58 PM
    #42
    Jason J

    #42
    Jason J Well-Known Member

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    My personal experience with the Denso iridiums in a supercharged 2008 is only 12,000 miles before misfiring under full boost. Both sets had the center fine wire eroded just like the pictures. The ones that weren't eroded away just disintegrated when touched. I switched to NGK ILFR7H which have a slightly larger center wire and currently have about 56,000 miles on them with no misfiring.
     
    Jason J, Jun 16, 2021
    #42
  3. Jun 17, 2021 at 9:01 AM
    #43
    JaxJacket

    #43
    JaxJacket Well-Known Member

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    Not discounting your experience, but it makes me wonder if the little cap on the center electrode was ever there (counterfeit) or if it fell off somewhere during installation or operation. I'm guessing that little cap is the iridium and is supposed to protect the center electrode from erosion. At 90k I can see where the attachment joint is eroding.
     
    JaxJacket, Jun 17, 2021
    #43
  4. Jun 17, 2021 at 4:53 PM
    #44
    Jason J

    #44
    Jason J Well-Known Member

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    I wonder if you are using a different model plug. The
    $9 Denso IKH22 Iridium Power Spark Plug, (Pack of 1)
    Denso IKH22 doesn't have a cap on the center wire.
     
    Jason J, Jun 17, 2021
    #44
  5. Jun 17, 2021 at 5:14 PM
    #45
    Jason J

    #45
    Jason J Well-Known Member

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    Jason J, Jun 17, 2021
    #45
  6. Jun 17, 2021 at 8:04 PM
    #46
    JaxJacket

    #46
    JaxJacket Well-Known Member

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    Top one is old, the bottom one new. With a magnifier I see caps on both. Camera doesn't pick it up. Denso website has better pictures. Still wonder if running lean or detonation might not knock it off leaving the skinny wire to erode quickly.
     
    JaxJacket, Jun 17, 2021
    #46
  7. Jun 18, 2021 at 5:43 PM
    #47
    atompson

    #47
    atompson Active Member

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    None.
    Don't know what to tell you - that's what came out.
     
    atompson, Jun 18, 2021
    #47
  8. Dec 12, 2021 at 6:44 AM
    #48
    I would rather be blown

    #48
    I would rather be blown New Member

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    I'm changing my plugs what do think about e3 plugs ? And about how long did it take you to change them?
     
    I would rather be blown, Dec 12, 2021
    #48
  9. Dec 12, 2021 at 4:03 PM
    #49
    Norton

    #49
    Norton Senior Member

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    Recommended plugs for S/C applications are listed in the first post of the TRD/ Magnuson 4.0 Supercharger Tips, Tricks, and Mods thread.
     
    Norton, Dec 12, 2021
    #49
    SUMOTNK likes this.
  10. Feb 8, 2022 at 4:59 PM
    #50
    Jefes Taco

    #50
    Jefes Taco Well-Known Member

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    If you ever wondered what 100,000 miles looks like on an iridium spark plug.


    Passenger side only. Gonna tackle the driver's side on Friday. After reading, it's going to take me either 45 minutes or six hours. I hope it's 45 minutes but I know it will be six hours and a lot of rage. :anonymous:
    IMG_0301.jpg IMG_0303.jpg IMG_0305.jpg
     
    Jefes Taco, Feb 8, 2022
    #50
Page 3 of 3

Products Discussed in

Denso (5345) IKH22 Iridium Power Spark Plug, (Pack of 1)
$8.47
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