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Thread: N62 b44 catalytic converter please read! Important

  1. #1
    Join Date
    Oct 2015
    Location
    Sweden
    Posts
    109
    My Cars
    1999 BMW 540i

    N62 b44 catalytic converter please read! Important

    Hey all I came across this little piece of info and was wondering if this is true as I cannot find anything about it.

    "on the N62 catalytic converters destroy with time and their cells get to the cylinders. It causes scoring in the cylinder blocks. Therefore it would be better to remove the catalytic converters and to install cat-backs instead."


    Link: http://mywikimotors.com/n62b44/

    If this is true then it is a pretty scary thing! I have 100k miles on my 7er with original cats, should I get them replaced?? I'm very concerned after reading this.

    Please

  2. #2
    Join Date
    Jul 2012
    Location
    North Carolina, USA
    Posts
    874
    My Cars
    1997 BMW 840Ci, 1985 Fer

    N62 b44 catalytic converter please read! Important

    How would their cells get to the cylinders, considering they're on the exhaust side and most of the time you have the valves in the way?

    They'd have to literally crawl up the header.

    Sent from my iPhone using Tapatalk Pro
    Matthew M.
    North Carolina, USA
    1997 840Ci | 2001 740iL | 1985 308GTSi Quattrovalvole

  3. #3
    Join Date
    Oct 2015
    Location
    Sweden
    Posts
    109
    My Cars
    1999 BMW 540i
    Quote Originally Posted by BobieM View Post
    How would their cells get to the cylinders, considering they're on the exhaust side and most of the time you have the valves in the way?

    They'd have to literally crawl up the header.

    Sent from my iPhone using Tapatalk Pro
    I know it sounds stupid lol but I've read of scored cylinders on the N62 with no explanation for it. Then I saw this and got pretty paranoid as I do and thought.. well heck, I'll just post it and see what replies I get.

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