2nd Gen R56 Cooper S What is the best spark plug?

Discussion in '2nd Generation: 2007+ R55 through R61' started by wsdivall, Dec 31, 2015.

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  1. wsdivall

    wsdivall New Member

    Aug 24, 2015
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    I recently purchased an R56 with 50K miles on it. I am going to change the spark plugs, but wanted to first check with the experts on this forum to see what's the best spark plug to put into this car (2007 Cooper S)? Also, where to purchase said spark plug.
     
  2. Metalman

    Metalman Well-Known Member
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    Sep 29, 2009
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    First off.... Stick with the factory plugs....

    Secondly, we have a library on the site... And you don't need a library card.... And the library is always open.... Unless Nathan is messing with the wires that run the site, he will shut down the power for awhile.... Here is a good read on sparking plugs from the library authored by Czar... A basic guide to Spark Plugs. - Library

    Thirdly.... Contact one of our sponsors for the sparking plugs... They help keep the lights on in the forum....
     
  3. Crashton

    Crashton Club Coordinator

    Jun 4, 2009
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    ^^^ Stock OEM plugs. Call the good folks at eMINIparts.com they'll set you up.

    http://www.eminiparts.com/
     
  4. M1N1

    M1N1 Well-Known Member

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    ^^^ +1
     
  5. oldbrokenwind

    oldbrokenwind Active Member

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    #5 oldbrokenwind, Jan 1, 2016
    Last edited: Jan 1, 2016
    Stock plugs for my '07S are NGK 5992. Can't find them any more --- when searching the NGK USA site the search comes up with a completely different stock number and corresponding IL***** number.

    Stock plugs with a smaller gap work great in my highly modded N14, but I was searching for a detailed breakdown on the IL***** number to compare with a recommended colder plug.
     
  6. Metalman

    Metalman Well-Known Member
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    #6 Metalman, Jan 1, 2016
    Last edited: Jan 1, 2016
  7. oldbrokenwind

    oldbrokenwind Active Member

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    For a colder plug, take a look at NGK 1422 --- ILKR8E6. Only significant physical differences are the gap --- .024, and wrench needed --- ⅝" (16mm). Trick is to find a really thin-wall socket to fit into the head.

    Haven't tried mine yet --- still working on other issues.
     
  8. wsdivall

    wsdivall New Member

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    Thanks for the great feedback and for pointing the newbie to the library.
     
  9. Grizld700

    Grizld700 Well-Known Member

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    I run Brisk plugs, but I'm running a stage 3 tune so I wanted something with a little more.
     

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