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Thread: valve adjustment measurements

  1. #1

    Default valve adjustment measurements

    ok so while working with a friend we mistakingly misread the Bentley manual and set all the valves to .012" at cold while the manual says to adjust to .010" at cold... should we re-adjust everything to .010"? or are we ok? (also, lucky me, found quite a few valves set to .014" cold, )

  2. #2
    Join Date
    Feb 2004
    Posts
    291

    Default How is it running???

    For my 1991 535i, Bentley says .012 cold. But most people will tell you that you should set them at .013 cold on the M30 engine because it promotes less valve overlap and better idle. I've been setting mine at .013 for years now and have had no problems or complaints.

    You went .002 above the factory setting, so I'd assume that you might have a bit more valve noise. If they aren't making too much noise and the car seems to be running okay, you might be okay leaving them. But, it probably wouldn't be a bad idea to go back in and set them to either .010 or .011. In the end, you're just going to have to decide for yourself.

    Grace and peace,

    Robert K

  3. #3
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,839

    Default

    more noise = more wear
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

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