So, when I went to buy the tap, I went to the nut and bolt shop and brought a Head Bolt with me to make sure I got the right one. What I didn't know at the time was the guy sold me the wrong tap. The head bolt thread is M12x1.75, but what I got for a tap was M12x1.50. This caused the problem and has now destroyed my engine. I think I may have to go with Time-Certs or Helicoil to see if I can salvage it. I'm pissed, but more pissed at myself for not double-checking the tap size. I'm thinking about a small claims suit against the nut and bolt shop. First things first though, the repair and recover.

__________________
Power Generation Specialist.

We judge ourselves by our intent.
We judge others by their actions.