Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Technique of broken bolt removal
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Old 09-20-2012, 12:49 PM
tech69 tech69 is offline
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just use a center punch and punch it dead square in the middle. Use a 1/8" bit for a pilot hole, then use a 3/32", then finally the size you want for your bolt. I like to take the bolt that belongs in the threads where the broken bolt is, then find a nut that fits it. Then you take the biggest bit you can find that fits thru the nut and drill out the rest of the bolt with that bit. Last retap the hole with the right sized tap for the original bolt and it's like nothing ever happened. It doesn't work all the time and its success hinges on how well you center your punch mark.
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