No need to drop the subframe.

Reposition the subframe back over the nipple, screw on the good side (place a jack to support SB), then drill it out through the bushing - bolt hole.

New LEFT HANDED drill bit may be best for this task.

it's a 100mm bolt from the end to the washer face. About 1/2 of that is in the car. Good to hear that those lefty bits may just drag that thing outta there. How is it that it can free up in spite of all the heavy torque that snapped it in the first place? Not doubting, just trying to learn. Me, I'm...

I can't address your other questions, but left hand drill bits will make holes just as well as right hand bits made of the same material. I hope you purchased quality bits. Bits marked HHS for High Speed Steel would be the minimum specification. Try to lubricate and cool the bits with oil while dril...

I had this happen on a left front subframe bolt once it was 100% IMPOSSIBLE to extract. I used the best tools and equipment available. IT would not extract. It would not drill out. Could not break it apart. Tight spot.... sheared bolt would not move no way no how. My solution was that I had an Reall...

I remain grateful for your help. I'm concerned about staying true with the bolt for the whole 50mm I will need to drill. I'm also wondering about the effectiveness of using left hand bits for the whole process. Will they drill as well as regular bits? Another question is the material I'm drilling i...