[burgermeister]

I torqued up my heads yesterday, and had a camshaft bind. After re-torque sequence #4, it spins freely. I'm reusing the pots & heads in their original locations, and nothing was machined. It follows that the 911 cam tower is a very finicky thing.

This leads me to think that having a broken head stud might cause the camshaft to bind? It's not one of the consequences typically discussed.

It further leads me to think that re-torqueing the heads after 1000 miles as suggested in Wayne's book is at least somewhat perilous (not castle Anthrax perilous unfortunately). The lubricant will have burned off the studs & nuts, making the torque / clamp load relationship much more random. And since the initial torque sequence made the difference between a binding cam and a freely rotating one, how can I verify that the re-torque sequence won't make the camshaft bind?

Were the 911 heads originally re-torqued? I don't recall it being listed in my service booklet.
Any experience with not re-torqueing the heads?