Broke my water pump bolt. Now what? (Update - broken bolt is out)

cruiser said

Still working the problem. Heated it up again, more PB Blaster, cooled it, tried to turn with a vise grips. No luck - wouldn't budge. Have totally buggered up the threads on the shaft. Before doing this, tried to fit an extraction tool on the protruding part. Not enough length to make the connection. Next step - drilling it for a bolt extractor tool. Going out to buy left hand drill bits.

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Hind sight is 20/20, I would of stopped before the threads got totally destroyed, and as mentioned above instead of a nut, I`d use a rod coupler as a guide. I would of ground the bolt flat to keep a bit from walking, just to get a good center started. Even then, it`s tough to keep a bit from walking over. I`m a weldor so you know what my first attempt would be.
Good luck we`re rooting for ya :thumbsup: