I'm trying to think of a way to get the rest of the nuts off in the event the manifold has to be removed. Heat each nut with oxy-acetelyne torch? Split each nut? If so, Dremel Tool? Torch? Plasma Cutter? Mechanical Nut Splitter?
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.
By the way, I beliece it's possible to "abuse" our exhaust manifolds. Run down the interstate at full cruise speed, duck into a rest area, nose into a slot, turn the key off and run inside. All that metal has to transition from Hot as they Get to Sudden Cool Down. Can't be good. If it's a quick stop, leave somebody aboard and let it idle. For a long stop, let it idle into a cooldown then shut it off.
