Re: Trouble - broken manifold bolt.

Posted by Tobs On 2018/6/9 1:08:44

If you are still using pb blaster or some penetrating oil, you can also hit it with a hammer a few times, and also heat it up with a small propane torch. I like to go through a few cycles of hammer, heat, oil, hammer etc.
If you remove the shield from the inner fender (the one used for valve adjustments), you might have better access.

I have also seen people melt a stud out with an oxy acetene torch. I don't know the process, but when I saw it once 25 years ago, I was amazed. He heated it up for a little bit, and turned one of knobs on the torch, the flame went out and the molten stud just ran out of the head onto the floor.