"Henry, we tried everything kn
"Henry, we tried everything known to man. The scent of competing penetrating oils had become suplanted into the bilge odors and unified. We had even last resorted to one of those " as seen on TV" sockets that even removes stripped bolts ! HA! A total waste... but in desparation any port in a storm as they say
Once I had the heads on my table in the garage I was able to remove most of the manifold bolts with a little heat and a few other tools that were just impossible to use in the ER. When I gave the heads to the machine shop, he removed the rest of the broken bolts , 1 or 2, and that was it."