Posted by primerk5 on September 09, 2009 at 08:28:53 from (65.196.175.100):
In Reply to: 10-20 manifold stud posted by Tony S. on September 08, 2009 at 21:20:05:
I had a similar issue on a Small Block chevy last year. I tried the welding a nut to it and soaking the Bolt and had no luck. Went from 1/2 inch of bolt stick out to 1/4 inch of stud sticking out when it broke. Luckily I had the engine out and on a engine stand so I could tilt the motor on its side and really let the kroil/gibbs/pbblaster work on it for a month. I then tried rocking the bolt with vice grips and had no luck. I was just about to give up when a friend told me about a trick that he uses from time to time. See, at that time he had, in my opinion, the most aggrivating job in the world. He was a broken bolt extractor for a Tank (the thing with big gun and tracks) refurbishment line.
Basically you will heat the surface of the head slightly right at the base of the bolt. Not to hot to damage the head, but hot enough to open the end of the bolt hole slightly around the broken bolt or stud. Then you melt a Crayon down into the threads. You will probably need to have the head on its side so that the bolt is vertical. I don't know if you will be able to get the wax to flow in with the bolt horazontal. In my case, we got the broken end of the bolt good and hot and just melted the crayon on that, though the end of my bolt was only a 1/4 in from the edge of the head. Then you take vice grip or something that will lock on the bolt/stud and start rocking it back and forth while its still hot, the wax will aid in removing the Bolt/stud. I've only done this once and it worked that one time. My friend has claimed to use it many times when he was working on that line.
Just thought it was something that you could try.
Good luck
This post was edited by primerk5 at 08:31:58 09/09/09.
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