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RE: [bmw e28] Digest Number 1151

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  • doug dykaar
    Nutjob, its an 85 US 535i with 150,000 miles. I was told I need to re snug the head bolts on occasion, but I m wondering how many Nm that is. Haynes says:
    Message 1 of 3 , Oct 14, 2006
      Nutjob,

      its an 85 US 535i with 150,000 miles. I was told I need to "re snug" the
      head bolts on occasion, but I'm wondering how many Nm that is. Haynes says:

      M30 six-cylinder engine (up to and including 1987 model year)
      Stage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
      . . . . . . . . . . . . 60 Nm
      Stage 2 (wait 15 minutes) . . . . . . . . . . . . . . . . . . . . . . . . .
      . . . . . . . Angle-tighten an additional 33°
      Stage 3 (engine at normal operating temperature) . . . . . . . . . . . . .
      Angle-tighten an additional 33°

      So I could at lest verify they're still at 60 Nm, but I'm not sure about the
      next step...


      Regards,

      doug

      85 535
      86 951
      94 855 turbo


      Date: Fri, 13 Oct 2006 12:26:22 -0000
      From: "bimmernutjob" <bimmernutjob@...>
      Subject: Re: <e28> head bolts loose/oil and coolant leak?

      doug

      which car, year , miles ?
      wet plugs might indicate different sort of problems
      some of members are mechanics
      figure out who and direct your concerns
    • John Forbey
      Correct me if I m mistaken, but after going through the torquing sequence once to initially tighten the head bolts on a gasket you only have to make sure they
      Message 2 of 3 , Oct 14, 2006
        Correct me if I'm mistaken, but after going through
        the torquing sequence once to initially tighten the
        head bolts on a gasket you only have to make sure they
        are tightened to 60nM, in the head bolt sequence?
        jforbey@...

        --- doug dykaar <ddykaar@...> wrote:

        > Nutjob,
        >
        > its an 85 US 535i with 150,000 miles. I was told I
        > need to "re snug" the
        > head bolts on occasion, but I'm wondering how many
        > Nm that is. Haynes says:
        >
        > M30 six-cylinder engine (up to and including 1987
        > model year)
        > Stage 1 . . . . . . . . . . . . . . . . . . . . . .
        > . . . . . . . . . . . .
        > . . . . . . . . . . . . 60 Nm
        > Stage 2 (wait 15 minutes) . . . . . . . . . . . . .
        > . . . . . . . . . . . .
        > . . . . . . . Angle-tighten an additional 33°
        > Stage 3 (engine at normal operating temperature) . .
        > . . . . . . . . . . .
        > Angle-tighten an additional 33°
        >
        > So I could at lest verify they're still at 60 Nm,
        > but I'm not sure about the
        > next step...
        >
        >
        > Regards,
        >
        > doug
        >
        > 85 535
        > 86 951
        > 94 855 turbo
        >
        >
        > Date: Fri, 13 Oct 2006 12:26:22 -0000
        > From: "bimmernutjob" <bimmernutjob@...>
        > Subject: Re: <e28> head bolts loose/oil and coolant
        > leak?
        >
        > doug
        >
        > which car, year , miles ?
        > wet plugs might indicate different sort of problems
        > some of members are mechanics
        > figure out who and direct your concerns
        >
        >


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      • bimmernutjob
        doug, sorry to get back so late...i ve never really had any head problems on any of my bmw s... so it s an area that s new to me. i know for a fact, aluminum
        Message 3 of 3 , Oct 19, 2006
          doug,

          sorry to get back so late...i've never really had any head problems on any of my bmw's...
          so it's an area that's new to me. i know for a fact, aluminum heads can be be problematic
          if not torqued properly, aluminum can warp and distort if engine over heats too, typically
          re-sufacing a warped head is dis-couraged from what I've heard. I would suggest
          researching this !!! GOOD LUCK

          anthony

          1983 533i
          1984 528e (x2)

          --- In bmwe28@..., "doug dykaar" <ddykaar@r...> wrote:
          >
          > Nutjob,
          >
          > its an 85 US 535i with 150,000 miles. I was told I need to "re snug" the
          > head bolts on occasion, but I'm wondering how many Nm that is. Haynes says:
          >
          > M30 six-cylinder engine (up to and including 1987 model year)
          > Stage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
          > . . . . . . . . . . . . 60 Nm
          > Stage 2 (wait 15 minutes) . . . . . . . . . . . . . . . . . . . . . . . . .
          > . . . . . . . Angle-tighten an additional 33°
          > Stage 3 (engine at normal operating temperature) . . . . . . . . . . . . .
          > Angle-tighten an additional 33°
          >
          > So I could at lest verify they're still at 60 Nm, but I'm not sure about the
          > next step...
          >
          >
          > Regards,
          >
          > doug
          >
          > 85 535
          > 86 951
          > 94 855 turbo
          >
          >
          > Date: Fri, 13 Oct 2006 12:26:22 -0000
          > From: "bimmernutjob" <bimmernutjob@y...>
          > Subject: Re: <e28> head bolts loose/oil and coolant leak?
          >
          > doug
          >
          > which car, year , miles ?
          > wet plugs might indicate different sort of problems
          > some of members are mechanics
          > figure out who and direct your concerns
          >
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