Spark Plugs

Discussion in 'Generation 4 - Performance Upgrades' started by DARTHSHO, Dec 14, 2019.

  1. DARTHSHO

    DARTHSHO SHO Member

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    car is almost at 60k miles so I’m going change the spark plugs was wondering what kind i should use. I heard the sp542 are better over the stock ones. I want to be able to run e85 in the future also
     
  2. SM105K

    SM105K Streetlight Grand Prix Champ/ IG @egocheckersho

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    You are correct.
     
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  3. ridered74

    ridered74 SHO Member

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    If it has been that long since they have been replaced, be prepared for every coil pack to be stuck to the plug and it to be a pain in the butt to get them out. Have some dielectric grease to put on when you reinstall.
     
  4. DouglasB_SHO

    DouglasB_SHO Member

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    What's the best gap for a SP542 plugs in a 2011 SHO (non-PP) daily driver with only a Roush CAI and SCT tune?
     
  5. SM105K

    SM105K Streetlight Grand Prix Champ/ IG @egocheckersho

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    .028 to .030
     
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  6. DouglasB_SHO

    DouglasB_SHO Member

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    Thanks, SM105K. As soon as they arrive, I'll gap them at the low end and install. It's been years since I actually changed the plugs in any vehicle, so it should be an adventure!
    Thanks to others for the hints about the coils probably not willingly coming off the plugs. Mine have been in place for 92K (Most likely original equipment since I bought it as a certified pre-owned, with the previous "owner" being a Ford employee in Michigan). Nice to know in advance they may take a little extra effort.
     
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  7. 76FoMoCo

    76FoMoCo SHO Member

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    It helps if you spin them as you lift
     
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  8. DouglasB_SHO

    DouglasB_SHO Member

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    Thanks, #76FoMoCo. I already have the anti-seize and dielectric compounds for installing the new ones.
     
  9. High on Ethanol

    High on Ethanol SHO Member

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    Don't break those fucking red clips!
     
  10. SM105K

    SM105K Streetlight Grand Prix Champ/ IG @egocheckersho

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    Yes be gentle with them.
     
  11. joe raptor

    joe raptor SHO Member

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    Well my red clips ,all of them when I changed the s/p they crumble on my fingers !!! Is there another way to secure them ?
     
  12. SHOdded

    SHOdded SHO Member

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  13. luigisho

    luigisho SHO Member

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    I couldn't find them at either. You have another place to search? I need these for my truck
     
  14. FiveLeeter918

    FiveLeeter918 Ortiz Performance Sales Sponsoring Vendor Supporting Member

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    The red clip isn't necessary for use, it's just the "I'm critical to engine performance, are you sure you want to remove me?" identifier.
     
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  15. SHOdded

    SHOdded SHO Member

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    The closest I can get ATM is this
    https://www.mouser.com/Search/Refine?Keyword=0334710306

    That is the connector with clip. Still not bad for 2.28. You could take out the clip and reuse it for yours (hopefully). This p/n comes off a nonEB 3.5 application, so IDK if the clip is any different.
     
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  16. joe raptor

    joe raptor SHO Member

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    Thank you brother !!
     
  17. jgonza5

    jgonza5 Member

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    Link to Video showing clip replacement:

    Msd coils
     

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