Team Camaro Tech - View Single Post - Cracked Off Front Fender Bolt - 1968
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post #9 of (permalink) Old Aug 12th, 18, 08:47 PM Thread Starter
BronzeDevil
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CJ
 
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Join Date: Jul 2015
Location: Colorado
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Re: Cracked Off Front Fender Bolt - 1968

Update: Before attempting to cut the nut out, I decided to try some additional boring methods to dig into that broken extractor. I read about a thing called a Rescue Bit. Cheap it is not, but it did very slowly dig into that hardened steel extractor. I found that by using an alternating combination of the Rescue bit, Dremel 953, and Dremel 453... it chewed through the extractor more quickly. In all it took about 2 hours to get through the 3/4" of extractor that was wedged in the bolt hole.

So what I am left with now, is a somewhat "cone-ified" tunnel into the nut. So not a perfect cylinder hole anymore. As far as I can tell, if I tried to retap the hole for the 3/8 OEM bolt, I might be able to get 2 or 3 correct depth threads toward the end the nut.

So would my best approach be to drill and tap it for a 1/2" bolt instead, to increase the number of good threads I could make ?

Thanks
CJ

1968 Camaro
Corvette Bronze - Black SS Stripe
540 BBC - TKO 600 - Currie 9

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