just thought of this one and might want to give it a try.. you say the vice grips dont hold onto the broken bolt that sticks out... this is what i did years ago with a small plug into the intake manifold on a 66 mustang.. the plug was for maybe the exhaust gases to go back to the choke on the carb to warm it up???? anyway i could not get this plug to move at all.. i stripped the head on it with the vicegrips.. so it filed it down to fit into a 1/4 in. drive socket(i believe it was a 1/4 or 3/8 in. socket and i then beat it onto the plug head.. the socket cracked, but head onto the plug and i used a 1/4 to 3/8 in. adapter to use the
3/8 in drive 18 in. breaker bar to get it going.. about a year later i got the socket off of the plug and brought it back to sears(it was a craftsman) so it did not cost me anything to get a new one... if that dont work, you might want to try a very small pipe wrench with the teeth into the bolt stub and see if that works... i find that anytime i broke a bolt it was because i had it too tight from an earlier repair.... also make sure when turning the wrench that it is exactly 90 degrees from the center of the bolt and not on an angle as you want all the force to go into turning the bolt and not forcing the head onto an angle and have it break... i did this with alot of lug nut that were the cap type(the nut covered the theaded stud).... used one of those cheap 60 deg. angle tire tools and just shoved down to break it and the lug would snap off.... the same will happen with any bolt if not actually putting the force into a circle to remove the bolt... hope this makes sense and helps.- posted
20 years ago