Here, a torch is heating the exhaust manifold near the stud so it can beremoved without breaking off flush with the manifold. The trick is toget the manifold hot with minimal stud heat. Keep the torch movingaround the manifold near the stud. If the stud gets red hot, it almostalways twists off flush, which will force you to drill out the remainingportion of the stud. So if you see the stud turning orange, let it cooland try again. Have a pair of Vise-Grip pliers ready to grab the studwhen the area around the manifold is just turning orange. If the studdoes not move, heat the manifold again and watch the stud for excessiveheat. Once the stud is moving, it will tighten up as the manifold coolsoff. Reheating will allow complete stud removal. Remember, everything ishot and will leave a lasting impression! Allow the manifold to coolwithout any aid--do not cool it with water.