SoonerYFZ
07-24-2004, 07:54 PM
A buddy of mine has a 400ex and wanted to take the exhaust header off to clean it up with steel wool. When he was loosening the nuts that hold the header onto the front of the engine, one nut became very tight and he continued to apply pressure until finally the stud sheared off along with the nut, with about a third of an inch of the stud remaining still protruding.
After trying vise grips to try to get the stud out and failing he finally took it to a welder and had the guy weld a nut onto the remaining stud. Once that was done, he tried to loosen the stud and remove it so that he could put in a new one. The stud loosened a few rounds then froze again... and once again it sheared off, this time flush with the engine. The welder wouldn't try it again for fear of damaging the head due to the heat of the torch.
Since then we have tried using extractor bits in conjunction with PB blaster penetrating lubricant and the extractor bits have snapped twice. This stud does not want to come out. Thats how it sits right now and aside from taking the engine apart and trying to remove it from inside we are at a loss. My buddy is afraid to drill out the stud for fear of damaging the engine head but I don't know what choice he has.
Does anyone have any suggestions on how to remove that stubborn stud?
After trying vise grips to try to get the stud out and failing he finally took it to a welder and had the guy weld a nut onto the remaining stud. Once that was done, he tried to loosen the stud and remove it so that he could put in a new one. The stud loosened a few rounds then froze again... and once again it sheared off, this time flush with the engine. The welder wouldn't try it again for fear of damaging the head due to the heat of the torch.
Since then we have tried using extractor bits in conjunction with PB blaster penetrating lubricant and the extractor bits have snapped twice. This stud does not want to come out. Thats how it sits right now and aside from taking the engine apart and trying to remove it from inside we are at a loss. My buddy is afraid to drill out the stud for fear of damaging the engine head but I don't know what choice he has.
Does anyone have any suggestions on how to remove that stubborn stud?