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s/c sparkplug?

Discussion in '1st Gen. Tacomas (1995-2004)' started by tacomaforlife, Mar 1, 2012.

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  1. Mar 1, 2012 at 1:47 PM
    #1
    tacomaforlife

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    tacomaforlife [OP] Well-Known Member

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    what is the best plug to run with the s/c that is cooler burning?
     
    tacomaforlife, Mar 1, 2012
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  2. Mar 1, 2012 at 2:27 PM
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    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    IIRC, You want Denso Iridium IK20, Toyota part number PTR24-35040
     
    chris4x4, Mar 1, 2012
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  3. Mar 1, 2012 at 3:42 PM
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    tacomaforlife

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    tacomaforlife [OP] Well-Known Member

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    ok thanks.
     
    tacomaforlife, Mar 1, 2012
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  4. Mar 1, 2012 at 3:49 PM
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    tacomaforlife

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    tacomaforlife [OP] Well-Known Member

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    just ordered them!
     
    tacomaforlife, Mar 1, 2012
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  5. Mar 1, 2012 at 8:21 PM
    #5
    Norton

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    Norton Senior Member

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    Are these worth the $8-$10/ea cost vs stock Denso K16TR11 plugs at ~$2/ea, Chris? (I'm thinking of your "Truth About Spark Plugs..." post.) I thought the only real benefit of Iridium plugs was long-life. Are there really other benefits in S/C engines?

    I hope lightning doesn't strike me for questioning your advice :eek:, but are you sure about the IK20 spec for 3.4L engines? I thought the 3.4L takes IK16 plugs. Are they interchangeable?
     
    Norton, Mar 1, 2012
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  6. Mar 1, 2012 at 8:22 PM
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    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    The Iridium plugs are a colder heat range and are for use in the Supercharged Tacomas to reduce the chances of knocking. The IK16's are the OEM Copper dual electrode plugs, where as the IK20's are the Iridium, and recomended for the SC applications.
     
    chris4x4, Mar 1, 2012
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  7. Mar 5, 2012 at 6:36 PM
    #7
    tacomaforlife

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    tacomaforlife [OP] Well-Known Member

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    what is the gap on the denso ik20 for s/c?
     
    tacomaforlife, Mar 5, 2012
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  8. Mar 5, 2012 at 7:10 PM
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    jberry813

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    jberry813 Making TW Great Again Moderator

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    General rule of thumb is to run 1 step cooler plug per 100 hp you add.
    If you're not running the 7th injector kit, as Chris mentioned, IK20's.
    If you are running the 7th injector kit, run the IK22's.

    Run the factory gap the plugs come with. If you want to get into tuning, I'd suggest you run the IK24's (assuming you have the 7th injector) and pushing the gap out .043" for a hotter spark.

    If you do start messing with the gap, don't use a traditional gapper. They will bend/break the irridium tips real easy. Use pliers and a feeler gauge or a spark plug gapping pliers like this: http://www.summitracing.com/parts/SUM-900313/
     
    jberry813, Mar 5, 2012
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  9. Mar 5, 2012 at 7:16 PM
    #9
    jberry813

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    jberry813 Making TW Great Again Moderator

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    Chris is dead on.
    Run the 16's and you'll end up with high gear, low RPM ping leanout condition. If you wanna skimp out an run traditional copper plugs you can (but 1 range cooler), but why? It's only another $40 and if you do any amount of research on it, it's money well spent. Last I looked, Amazon has the best deal going on Denso irridiums.
     
    jberry813, Mar 5, 2012
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  10. Mar 5, 2012 at 7:26 PM
    #10
    tacomaforlife

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    tacomaforlife [OP] Well-Known Member

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    yea, ive already gotten a set of denso ik20's and also im going with larger injectors.
     
    tacomaforlife, Mar 5, 2012
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  11. Mar 5, 2012 at 7:36 PM
    #11
    Norton

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    Norton Senior Member

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    Thank you, both, for the education!
     
    Norton, Mar 5, 2012
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  12. Mar 5, 2012 at 7:40 PM
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    jberry813

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    jberry813 Making TW Great Again Moderator

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    Larger injectors arn't going to help you (in fact it will hurt you).
    The fuel pump is the fuel restriction with the truck. Check out URD and look at their fuel upgrade options. If you don't have EGR, get the 7th injector kit with the piggyback is the only way to go. If you do have EGR, larger fuel injectors are the way to go.
     
    jberry813, Mar 5, 2012
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  13. Mar 5, 2012 at 7:44 PM
    #13
    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    I dont think any of the 3.4's have an EGR.
     
    chris4x4, Mar 5, 2012
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  14. Mar 5, 2012 at 8:07 PM
    #14
    jberry813

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    jberry813 Making TW Great Again Moderator

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    The T-100's came with it.
    The install manual for the supercharger also indicates some pre-2000 Tacos may be equiped with it.
     
    jberry813, Mar 5, 2012
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  15. Mar 5, 2012 at 8:08 PM
    #15
    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Ok....Im not too familliar witht eh 3.4 in the Tundra. I havent seen any EGR equiped 3.4's in the Tacoma, and the FSM only has the 2.7 listed as being EGR equiped.
     
    chris4x4, Mar 5, 2012
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  16. Mar 5, 2012 at 8:12 PM
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    jberry813

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    I haven't seen one on a Taco either, but Toyota has done weirder shit than a random EGR valve.

    I'm just going off the TRD install guide:


    ​
     
    jberry813, Mar 5, 2012
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  17. Mar 5, 2012 at 8:20 PM
    #17
    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Good point. Ive seen the instructions before, and had the :confused: face as to what vehicles with the 5vz had an EGR......anyhoo.....perhaps one day we will see the rumored 3.4 Tacoma with an EGR in it. Kinda one of those mysteries that you hear about, and have heard others talk about, but never seen one.. :eek:
     
    chris4x4, Mar 5, 2012
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  18. Mar 6, 2012 at 7:18 PM
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    tacomaforlife

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    tacomaforlife [OP] Well-Known Member

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    if im running larger injectors and a larger fuel pump why should it matter if i had an egr valve or not? either way i will be pushing more fuel.
     
    tacomaforlife, Mar 6, 2012
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  19. Mar 6, 2012 at 7:36 PM
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    jberry813

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    jberry813 Making TW Great Again Moderator

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    I was referring to the 7th injector kit. It utilizes the EGR port on the s/c. If you have EGR, you can't run the 7th. You should still look into a piggyback. The factory ECU only allows for 7* of timing retard, and even with more fuel and cooler plugs, high gear low RPM and WOT it's not enough retard and you'll get that painful ping sound of detonation.
     
    jberry813, Mar 6, 2012
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  20. Mar 7, 2012 at 6:38 AM
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    tacomaforlife

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    tacomaforlife [OP] Well-Known Member

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    O ok gotcha yea i dont have an egr valve so i could run a 7th but ive got other plans and i may run the urd piggyback but ill see how it does without first.
     
    tacomaforlife, Mar 7, 2012
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