Engine noise and broken exhaust bolt (updated with pics)

j-d wrote:
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This is to get the manifold out of the way without breaking any more of he studs. Then work carefully toward removal without the manifold in the way.
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In my experience with the studs that did break in the removal process, it was like all I had to do was breath on them and they broke. In other words, about the ones that broke, they were just held in place with a surface "rust bond".