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Overheated, now stumbling/stalling above 3K RPM

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    #16
    Originally posted by GT_M3 View Post
    https://www.facebook.com/reel/3599987790174508
    Getting around to working on this - having some issues timing up the engine prior to removing the head. Does this even matter? Let me know if you can't see this video
    That is good enough. Crank pin at TDC, cyl1 cam lobes facing each other, and cams as close as you can get them to lining up with the bridge tool. If you wiggle that exhaust cam back and forth, it should move counterclockwise to line up with the pin, not critical though. There is some residual oil in the VANOS unit that sometimes makes it hard to turn the cam even after you release the VANOS valve body. When you pull the VANOS unit and hubs off, it is much easier to rotate the cams.

    Once you remove the chain from the sprockets and before you remove the cams, the crank needs to be rotated 30 degrees counter clockwise to bring piston 1 and 6 down a bit. When doing this, hold tension on the chain with your left hand. Once that is done, the chain can be left bunched up in the chain guides. Refer to TIS, Beisan and the headgasket DIY on m3cutters for instructions.
    Last edited by Slideways; 10-29-2026, 12:18 PM.

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      #17
      Timing is wrong, redo it.

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        #18
        Originally posted by jayjaya29 View Post
        Timing is wrong, redo it.
        He is removing the cylinder head.

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          #19
          Originally posted by Slideways View Post

          That is good enough. Crank pin at TDC, cyl1 cam lobes facing each other, and cams as close as you can get them to lining up with the bridge tool. If you wiggle that exhaust cam back and forth, it should move counterclockwise to line up with the pin, not critical though. There is some residual oil in the VANOS unit that sometimes makes it hard to turn the cam even after you release the VANOS valve body.

          Once you remove the chain from the sprockets and before you remove the cams, the crank needs to be rotated 30 degrees counter clockwise to bring piston 1 and 6 down a bit. When doing this, hold tension on the chain with your left hand. Once that is done, the chain can be left bunched up in the chain guides. Refer to TIS, Beisan and the headgasket DIY on m3cutters for instructions.
          Ok, I was wondering if maybe I had bent something, anyway I guess we'll find out. I wiggled the cam pretty hard but didn't want to break it. I'll continue on using the m3cutters post. Thanks!

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