Wastegate Actuator Modification

The wastegate actuator is held to the compressor housing by two bolts threaded into the housing itself.  The arm attaches to the wastegate linkage with a small retaining clip.  Once the turbine housing is rotated, the wastegate no longer lines up properly.  It must be relocated slightly.  To do this, I drilled a new mounting hole (1/4" drill) in between the existing holes as shown.  Then using just one mounting bolt, line up the new hole with one of the tapped holes on the compressor housing (the one to the left when looking at the holes straight on, compressor housing away from you).

Another view of the new hole.  Best way to determine the location is to attach the arm to the wastegate linkage and place the bracket on the compressor housing where it fits most naturally.  Then mark where the mounting hole lines up to the flange.  The result is that the bolt that normally went through the hole on the left, now goes through the new hole in the middle.