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Thread: How to make the chain guides last?

  1. #26
    Join Date
    Jul 2016
    Location
    Chicago, Illinois
    Posts
    3,842
    My Cars
    are slow
    [QUOTE=Nobleprofessor;29934811]
    Quote Originally Posted by cyclops2 View Post

    So the tensioner can be replaced pretty easy? Maybe I should do that on my 99 with 121K miles? I had no idea it was so easy.
    it's very easy, yes

  2. #27
    Join Date
    Jul 2006
    Location
    sacramento
    Posts
    4,134
    My Cars
    e30 & e34
    There is a reason why these cars , along wit E53 and E39 with the same engine are getting dumped and show up for sale on CL for $500-1500 . Most people drive these into the ground and as soon as they need need timing guide job and get the bill off the car goes to junk yard or shows up On CL as "mechanics special ".

    Seriously though , if the car is running at over 150k miles on original single row timing guides it's done it's job . I would say anything over that is a bonus , and you have to understand that these items come as the "true cost of ownership ", but most people get these cars without thinking what it actually takes to maintain a 540/740/x5 and run 🏃as soon as it starts braking down or just run it to the ground .

    If you are buying one of these and don't have paperwork that these have been done, then factor in this job will need to be done along with the whole cooling system and if you can't afford it then this car isn't for you .

    /off my soapbox .

  3. #28
    Join Date
    May 2011
    Location
    Maine
    Posts
    268
    My timing chain guides went on my 96 740il with 80K on the odo at highway speed and totally thrashed the engine. I replaced the engine with a 97 engine with 70k on it. I have no idea whether the TCG had been done on the replacement engine. I have since gone on to put 100K on that engine and there is no indication of TCG failure. I use Castrol High Mileage oil and I replaced the tensioner at about 120k. The car has been great to me. I will not be doing the TCG on this vehicle. If they fail -- adios -
    Last edited by RHP; 01-19-2018 at 11:33 AM.

  4. #29
    Join Date
    Nov 2003
    Location
    Lake Forest, IL
    Posts
    1,050
    My Cars
    01 740i,E93 M3,E30 325is
    I changed mine at 120k, no signs of issues but I figured why not since I was trying to make this car as nice running as possible. Changed the tensioners too.

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