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Thread: N57 timing chain failures and repairs

  1. #1
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    N57 timing chain failures and repairs

    Another N57 .... Luckily this X6 came right at the time ...
    Top chain was very badly stretched, as it got longer as should be ,tensioners working limits was not enough ,tensioner was fully out,chain still was too lose ,this made, some ,usual chain grinding- rattling noise between 1k - 2k revs .This made owner to worry about engines condition and he called in to us for opinnion ,we comfirmed failure and did all the work to get this nice car back on the road.
    Full timing chain kit , gakets,washers ,bolts and engine service kit with fresh oil and filters.Mileage 154k km .
    Motor Confidence-14b Knockmitten lane,Western ind est ,Naas road D12

  2. #2
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    nice work as always

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  3. #3
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    N57 timing chain failures and repairs

    Few more pictures


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    Last edited by Valdelisbmw; 16-01-20 at 00:30.
    Motor Confidence-14b Knockmitten lane,Western ind est ,Naas road D12

  4. #4
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    Quote Originally Posted by Valdelisbmw View Post
    Wowser - is that how much the chain actually stretches ?

    There must have been some rattle out of the engine bay alright....
    Current Daily: 2008 Lexus GS300 Sport F/L
    Current: E39 525i M Sport (Titan Silver)
    Previous: E34 520i SE (Orient Blue)

  5. #5
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    Quote Originally Posted by Big H View Post
    Wowser - is that how much the chain actually stretches ?

    There must have been some rattle out of the engine bay alright....
    Yes it is ,tensioner has it limits as well, so it gets so bad , tensioner literally broke as oil pressure pushes it out ,as much as possible to get chain tight . Unfortunately 6 cylinder engines they don’t really make lot noise , def not as much as 4 cylinder ones , so most people didn’t notice big difference ,once chain gets too loose and noisy .


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    Motor Confidence-14b Knockmitten lane,Western ind est ,Naas road D12

  6. #6
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    Is it that the 6 cylinder chains don't stretch/break as often or simply because there's not as many of them around that we don't hear about them as much as the 4 cylinder N47 shitstorm ?
    Current Daily: 2008 Lexus GS300 Sport F/L
    Current: E39 525i M Sport (Titan Silver)
    Previous: E34 520i SE (Orient Blue)

  7. #7
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    They do brake , same as N47 , just not so many cars ,they are later make as well , they do fail N57 from 80k Mls , same as N47 . Very very common , in Europe we’ll known fault , here as well , just not lot garages talk about this .... btw on DD few X5 2013 or so make , with already replaced chains under 100k Mls


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    Motor Confidence-14b Knockmitten lane,Western ind est ,Naas road D12

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