Removing stud exhaust manifold cossie 4x4
As I want to make a quick release turbo on my cossie 4x4 I have to remove 1 of the 4 studs on the exhaust manifold.
How are these studs put in the manifold? Do I have to cut it off with a grinder and than put some new thread in it to use a bolt? Or can I loosen them after soaking them in WD40?