21-09-2017, 08:48 AM
The last one I did I broke off, had to drill and re-tap. Engine still in car.
See a previous thread for what goes wrong if you drill too deeply!
Usually the gentle "cycling", together with heat and/or cold works.
But you need a lot of patience.
Clamp nuts on to the stud, or I use a new pair of mole grips.
Heat, and "cycle" ie. apply alternate clockwise and anti clockwise pressure to rotate the stud.
As much as you dare, but not enough to twist the metal of the stud.
Maybe a hundred times, nothing appears to happen. If you get any movement after this, just a tiny bit, you will probably be successful.
I heat, apply fluid, repeat a few times. Then, cold from a plumbers pipe freezing can. Repeat.
Lots of patience. And then "Snap", anyway. Heigh Ho, that's life.
Simon
See a previous thread for what goes wrong if you drill too deeply!
Usually the gentle "cycling", together with heat and/or cold works.
But you need a lot of patience.
Clamp nuts on to the stud, or I use a new pair of mole grips.
Heat, and "cycle" ie. apply alternate clockwise and anti clockwise pressure to rotate the stud.
As much as you dare, but not enough to twist the metal of the stud.
Maybe a hundred times, nothing appears to happen. If you get any movement after this, just a tiny bit, you will probably be successful.
I heat, apply fluid, repeat a few times. Then, cold from a plumbers pipe freezing can. Repeat.
Lots of patience. And then "Snap", anyway. Heigh Ho, that's life.
Simon