Loose vanos cover bolts?!

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  • spiDmang
    No R3VLimiter
    • Nov 2010
    • 3941
    #1

    Loose vanos cover bolts?!

    Has anyone ever had issues with their m5x/s5x vanos housing bolts coming loose?

    I cracked up the valve cover to replace the valve cover gasket to find my vanos cover held on by the 5 bolts that were almost backed out to the point of grenading the engine! (literally, the picture shows how i found the bolts)

    Its not shown here, but there is a bolt near the bottom of the cover that i CANT reach for the life of me. Do you guys recommend removing the vanos, and tightening down the cover bolts w/ locktite, or is there some magical way to get a wrench in there to get that badboy nice and proper?



    HELP!!
    Last edited by spiDmang; 12-05-2012, 07:48 AM.
    -Brad, AlphaTeam Motorwerks, LLC
    91' 318iS - S54/6MT Swapped
    08' E90 M3 6MT - Daily
    04' Chevy Duramax CCLB - Work Truck/Hauler


    Originally posted by IronJoe
    Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.

    Originally posted by 2mAn
    Brads a standup guy even though he likes buttsex
    Tags: None
    • FredK
      R3V OG
      • Oct 2003
      • 14747
      #2
      Yes. This EXACT thing has happened to me. I actually rebuilt a VANOS with the Beisan Systems kit, torqued the bolts to 89 in-lb with a in-lb torque wrench. After around 16K miles of driving I pulled the valve cover. I saw these bolts had backed off even more than yours.

      So, I removed the VANOS and rebuilt it again, this time tightening to 89in-lb and snugging the three bolts a touch more. There might be a way to do this without completely removing the VANOS but you'd probably need a half moon wrench or somethign weird like that.

        Comment

        • spiDmang
          No R3VLimiter
          • Nov 2010
          • 3941
          #3
          Originally posted by FredK
          Yes. This EXACT thing has happened to me. I actually rebuilt a VANOS with the Beisan Systems kit, torqued the bolts to 89 in-lb with a in-lb torque wrench. After around 16K miles of driving I pulled the valve cover. I saw these bolts had backed off even more than yours.

          So, I removed the VANOS and rebuilt it again, this time tightening to 89in-lb and snugging the three bolts a touch more. There might be a way to do this without completely removing the VANOS but you'd probably need a half moon wrench or somethign weird like that.
          Damn...that is sooo sketchy. Did you end up using locktite on the bolts when you re installed everything?

          Yeah, I can basically get all the bolts snug besides the bolt at the very bottom of the cover. wish i could have snapped a pic of it before leaving for class. I'd hate to remove the vanos, to have them back out again.
          -Brad, AlphaTeam Motorwerks, LLC
          91' 318iS - S54/6MT Swapped
          08' E90 M3 6MT - Daily
          04' Chevy Duramax CCLB - Work Truck/Hauler


          Originally posted by IronJoe
          Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.

          Originally posted by 2mAn
          Brads a standup guy even though he likes buttsex

            Comment

            • FredK
              R3V OG
              • Oct 2003
              • 14747
              #4
              I did use blue loctite on the bolts to be extra sure. Honestly though, with a slightly extra snugging they won't back out. I rebuilt another VANOS for another engine, just doing the extra snugging step with no loctite and they didn't back out after around 20K miles.

                Comment

                • bimmer630
                  E30 Fanatic
                  • Mar 2009
                  • 1228
                  #5
                  maybe use new nuts too.. BMW always recommends replacing the pinch style nuts

                    Comment

                    • bimmer630
                      E30 Fanatic
                      • Mar 2009
                      • 1228
                      #6
                      ...But i dont know if those are locknuts so my comment may be stupid

                        Comment

                        • spiDmang
                          No R3VLimiter
                          • Nov 2010
                          • 3941
                          #7
                          Originally posted by bimmer630
                          maybe use new nuts too.. BMW always recommends replacing the pinch style nuts
                          From my experience, I can't get the bolts fully out, with out removing the vanos >__<
                          -Brad, AlphaTeam Motorwerks, LLC
                          91' 318iS - S54/6MT Swapped
                          08' E90 M3 6MT - Daily
                          04' Chevy Duramax CCLB - Work Truck/Hauler


                          Originally posted by IronJoe
                          Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.

                          Originally posted by 2mAn
                          Brads a standup guy even though he likes buttsex

                            Comment

                            • 328ijunkie
                              Forum Sponsor
                              • May 2007
                              • 3961
                              #8
                              I always overtorque them a smidgen because of that. Ive never had them backout :dunno

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                                Comment

                                • spiDmang
                                  No R3VLimiter
                                  • Nov 2010
                                  • 3941
                                  #9
                                  Originally posted by 328ijunkie
                                  I always overtorque them a smidgen because of that. Ive never had them backout :dunno
                                  Is there anyway to do this without removing the vanos?
                                  -Brad, AlphaTeam Motorwerks, LLC
                                  91' 318iS - S54/6MT Swapped
                                  08' E90 M3 6MT - Daily
                                  04' Chevy Duramax CCLB - Work Truck/Hauler


                                  Originally posted by IronJoe
                                  Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.

                                  Originally posted by 2mAn
                                  Brads a standup guy even though he likes buttsex

                                    Comment

                                    • sharky
                                      R3VLimited
                                      • Jan 2005
                                      • 2672
                                      #10
                                      no remove it, new nuts and locktite. Had this happen to a customers car and it deystroyed the engine

                                        Comment

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