|
See if you can get some penetrating oil in there. Try the type of bolt extractor that puts a nut or socket cap over the threads and has internal left hand threads so it screws onto the stud as you turn it counterclockwise to extract the stud. It looks like there is enough threads there to use this type and avoid drilling. Is the material the bolt goes into aluminum? I wouldn't use heat if that is aluminum, since it doesn't change color as it gets hot, it just goes from solid to liquid. Steel will turn orange as it gets hot. This is from someone who learned this the hard way a long time ago! Put a dab of anti-seize on the bolts before putting them back in too.
|