Cm871 Incredibly rusted bolts

[Rawze]

(03-31-2023 )rapidisimo Wrote:  Is there a barrier between the bolt and the inside of the head?

The threaded holes that are in the head for the exhaust manifold bolts are not thru-holes. They do not open up on their far end into the head or block.

One thing that helps keep them from snapping off when they are really rusty like that are use a brass bar + 5-lb hammer to "shock them" before trying to initially loosen them. Can also use an air hammer on them.