2nd Gen R56 Cooper S which is the faulty one?

Discussion in '2nd Generation: 2007+ R55 through R61' started by genik, Feb 5, 2017.

  1. genik

    genik Member

    Feb 20, 2012
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    Suppose i got two timing chain tensioners in my hands and one of the two im told that is a faulty one, how can i tell which one it is?
     
  2. Metalman

    Metalman Well-Known Member
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    Sep 29, 2009
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    MINI went through something like 5 design changes on the tensioner.... If the two that are in your hands are not the latest.... They are both suspect...

    Tensioners can go bad if the internal spring relaxes, resulting in the chain not getting the proper tension...

    Tensioners can go bad if proper oil isn't used or the oil change interval isn't maintained... They can stick or bind up from oil contaminants and not apply the proper tension.

    Tensioners can operate at the wrong tension if the oil level isn't maintained or the oil pressure drops... Even on the latest version....

    MINI doesn't publish spring tension on new tensioners.... Measure the tension on a new version tensioner, and as a starting point, compare it to the two in your hand... That would give you a good indication if the two are good or bad....

    MINI went through a number of length changes with their various versions... Some are shorter... Some are longer...

    Even with a new latest version tensioner, if the valve train assembly has been damaged, even the latest version won't do much for you.... They all work together and need to be within specification..... In other words.... If you have holes in your tire... Don't expect new air to do much good....
     
  3. MCS02

    MCS02 Moderator
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    Jul 31, 2009
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    ^^^^^What he said^^^^^ Ok I don't have a clue I just wanted to sound smart:D
     
  4. genik

    genik Member

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    I think im covered.
     
  5. caseydog

    caseydog Well-Known Member

    Nov 7, 2012
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    MINI did a recall on timing chain/tensioners on the R56. Check with your MINI dealer to see if you are covered. You may get them replaced for free, if you are covered.

    I got my timing chain and tensioners replaced for free a couple years ago under the recall.

    CD
     

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