A search of this site will show you that many have had to do this repair and shearing bolts has not been a problem. The bigger issue is to make sure that the flaps that the broken lever operate and not binding in any way. If they are binding or just starting to bind, the flaps will eventually break and the broken pieces will be pulled into the combustion chambers of the engine. This is not a good situation and could be big problem for the engine. Cleaning the areas around the flaps of all carbon buildup will help to keep the flaps from binding.Hi everyone. My 2004 350 SLK requires the intake manifold repair as the little flap has broken, according my indy mechanic. I have the repair kit, and the car will soon be going in for the work. He is worried about shearing off bolts that were put on at the factory with Loctite.
Should this be a fairly easy repair or is he right to be worried? Might I be better off just getting a used manifold and swapping them over? Any advice would be much appreciated!
It sounds like your mechanic has not done this repair before and so you may want to find someone that has. If you are concerned about just replacing the broken lever, the only other option is to replace the entire intake manifold with new. Buying a used will likely have the same issues as your current manifold in the near future. New manifolds online are not terribly expensive - at least not like buying from a dealer.