Re: Au Head Bolts
If you're rounding bolts with an impact socket, it is too big and/or not far enough down on the bolt head. A perfect socket would need to be tapped onto the bolt with a hammer- it'll JUST fit on the end, but ater that will be too tight. Sometimes the outside diameter of the socket can jam on something else preventing it seating on the bolt properly. In this case, it could require careful grinding. Just remember- if they can be put on without shearing the heads off/rounding them, then you should be able to get them off without that happening (and without welding an impact socket to them...) Any sort of binding that occurs could be undone as described above with the brass bar.
1987 Jaguar Sovereign - Metallic Green
3.6L DOHC 24 Valve