Originally developed and published here by unknown author: http://members.cox.net/rlacm/IntakeIndex.htm
Recovered and published by BMW-Planet.com – May 2012
1. Insert one bolt into the driver’s side upper mounting hole of the manifold. Install one gasket onto this bolt - gasket only fits one way (hold manifold such
that bolt doesn’t slide out, and gasket doesn’t fall off). Position manifold on engine block and start threads of first bolt - get it threaded maybe 3-4 turns. Be
careful not to let the gasket fall off or the bolt slide out - if this happens you’ll spend ten minutes fishing it off the top of the header. You want as much play
in the manifold as possible without risking pulling the bolt out of the hole.
2. Repeat this process with one bolt and remaining gasket on the passenger side. Note that you SHOULD be able to get the bolt threaded while still leaving
enough slop in the manifold-to-block clearance to allow positioning of the water pipes in the manifold. Make sure you put the gasket on correctly. At this
point your work should look as shown at B.
3. Now draw the manifold forward toward the block with one hand while guiding the tubes into their respective sockets with your other - when the pipes hit
the o-rings they will hold themselves in place. Twist each pipe slightly to ensure proper seating - don’t pull them backward or they may back out of the water
pump housing.
4. Making certain the gasket is correctly positioned, insert a second bolt into the manifold on the driver’s side and snug it up - do not tighten yet. Repeat this
procedure for the passenger side.
5. Finally, insert the third bolt into the driver’s side of the manifold, snugging both it and the first bolt. Repeat for passenger side.
6. Finally, tighten all six water manifold bolts evenly. Once the manifold is tight, grasp and twist each pipe to center it between the water pump and
manifold.
7. Once everything is happy, use a flashlight to check one last time that the gaskets are correctly aligned. Now stand up straight and stretch out your aching
back muscles.
- Reinstall both water hoses, adjusting hose clamps so that the screws are accessible from above after everything is reinstalled (ie., plan for the worst - it IS possible
to replace these hoses with the intake manifold installed).
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