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

cruiser said

Hi All: I just broke off the lower water pump bolt on my 1974 slant six. All the other bolts came out without a problem. Any ideas as to the best way to extract the broken bolt? I've been soaking it in PB Blaster for the past several days. I don't weld, so I can't weld a nut to the end and twist it out. Haven't used an Easy Out device either. I might try to grab the end with a vise grips and give it a twist, but I don't think this will work. I have a propane torch to heat it up with, if that would help. Ideas, anyone? Thanks - cruiser

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Here's a trick I used.

Cut a slot in the bolt end using a dremel tool.

Then, you will need a flat screwdriver bit that you can use in a ratchet.

Soak the bolt end in penetrating oil overnight .

Use your propane torch to heat up the bolt and get it as hot as you can.

Use the ratchet with the flat bit inserted in the slot you made in the bolt and try moving it back and forth. Do not try to back it all the way out, just work it back and forth until it really loosens up.

Then, soak ii in penetrating fluid again.

Should back out if you take your time.