Roadrunner_GTI
Drag Racing Champion
Bringing back an old thread. I've got the same issue, broken driver's side stud. Noise came and went for a while making it hard to track down. Finally got it diagnosed - shop pulled the manifold and found it warped on the driver's side. Most of the stud fell out as they were pulling off the manifold and now there is just a little bit of it left in the head. I've got 80k on the car. Been stage 2 since 30k with no issues until now. Not sure what I'm going to do - seems like its going to cost a lot to get that stud out and I don't know if its worth it at this point. Oh well.
The shop should be able to extract the stud without removing the engine. It will take a 90 degree drill and then a screw extractor. Good luck and let us know how it goes.