You will most likely be unable to drill out the bolt if you broke a Torx bit off inside the hole you drilled....Torx bits are as hard or harder than a drill bit. Good luck.I recently acquired a free Toro Timemaster 30 inch with a Briggs 121S17-0127-F1 and I'm attempting to get it running. It had a blown head gasket, and in taking off the cylinder head one of the muffler bolts snapped. I've tried everything to get it out and I'm just about out of ideas. Here's what I've tried.
An entire bottle of pb blaster (not literally but a ton)
Filing down flat edges on the stub and rocking vice grips back and forth on it. Just mushed the metal right off the bolt.
Drilling out the bolt and hammering a torx bit in the opening. I've seen folks do this with great success. My torx bit snapped off in the bolt.
Grinding head on a Dremel to grind out the torx bit inside the bolt. Just melted the bit.
Next idea would be to grind a slit in the bolt and flathead it out, or try and tackweld a flathead to the top of the bolt and rock it out.
1. Any ideas or suggestions?
2. Do I actually need two bolts on a muffler?
3. Are there replacement mufflers I could use?
Really trying to avoid the $100 to buy a new cylinder head but also don't want to spend $$$ only to have to turn around and buy the head anyway.