I should be posting this on the 944 forum but I find it to be a little embarassing that I did something so stupid.
I am replacing my exhaust gaskets as part of a larger project and as the shop manual recommends...I am also replacing the hardware (i.e., exhaust studs).
Everything was going smoothly and I pulled 7 of 8 studs; the 8th came out ok but was much stiffer than the others.
When installing the new studs, the same 8th stud was threading but was doing so with resistance. I had about 3 turns to go & ......SNAP.
I am considering drilling out the stud with some type of guide to keep the drill in the center of the screw - the stud is 1/2 inch into the cylinder head. I'm really hoping to avoid removing the head as I only have 45k miles on the car and it's in good shape (I don't want to jinx that).
Any advice would be great, Ive got a couple of weeks before I tackle this.
My Screwup:
Not too much room (about 6 inches of space):
1/2 Inch of stud snapped off:
Thought of trying somehting like this: