I'm starting this topic to present my case of broken rear engine - frame bolt.
My goal is to remove the engine from the frame.
Nut unscrewed easily, but the head broke off.
Looking longer at the severed bolt I realized that it was earlier cracked for some time as most of the surface is rusty.
Worse that the rust welded bolt to other parts inside.
Hammering the right part of the bolt didn't help so I decided to cut off the middle part.
As this place is hard to reach with normal tools (hacksaw) I used a drill to do the cut by making a lot of holes on different angles.
I removed the middle and the right part (on the floor), but left side stands still. When I rotate the engine the bolt skrap is moving together so it is not connected to the frame itself. Tomorrow I'll continue my fight with this s***. I do little step forward each time I try

Do you have any hints for me?