Well, ive got big problems now. FINALLY got the exhaust manifold off, this required torching two of the studs out of the downpipe. (I melted a sensor down there, pic later, not sure what it does, its not CO2)
After struggling forever, source of the exhaust leak is all but one of the 5 lower exhaust manifold nuts was missing, and the top only had 4. Of those 5 remaining fastners, two broke off in the head when I tried to loosen them (did not apply lots of force, they were so weak they snapped off with light pressure), and combined with the 3 already broken off. So now, I have no less than FIVE manifold studs broken off in the head.
Cylinder 1 and 5 both studs are snapped off, and cylinder 2 the top stud is broken off.
This is kind of a huge disaster, not sure what direction im going to follow trying to repair this. I suppose I could helicoil all 5, but potentially it could be easier to pull the head and do all 5 on a bench.
opinions?