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Broke off Bolt heads

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Kris

11-20-2000 11:57:19




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I am just starting to tear down my '51 B and as we all know bolts will break off. My question is what is the best way to take care of these? Do you use the bit the same size as the old bolt threads or what? Need some explaination for this please. I really appreciate the help.




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Gman

11-20-2000 18:05:20




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 Re: Broke off Bolt heads in reply to Kris , 11-20-2000 11:57:19  
Chris just guessing I'd say you broke a bolt off that holds the exhaust masnifold,and they break off flush usually.Clooney was right on target cut head off then you got a long bolt to work with,I know I've broke the suckers off too and so has everyone else,so it's no big deal.The bolt will probably have to be drilled,and I always have trouble hitting the center,so try a small bit 1/4 inch (I don't know for sure but some B's have pushrod (copper) sleeves in them so be careful you don't drill a hole inthe copper sleeve if they are in there. After you get the hole drilled take a torch and heat that bolt down thru the hole you just drilled,it would be nice to get it cherry red but remember the copper sleeves,and heat it just enogh where you want damage those sleeves spray some penetrating fluid down the hole and let it cool,do this number a couple of times heating and cooling then take an easy out and try to back the stud out don't break easy out off in hole you will be in trouble,if it don't back out put the heat and penatrating fluid to it till it does back out it will eventualy come it can't stand that heat and cooling,let us know if you get it out. Later Gman

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clooney

11-20-2000 12:19:47




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 Re: Broke off Bolt heads in reply to Kris , 11-20-2000 11:57:19  
Kris, it all depends on where the bolt breaks & what it is in. My prefered method (if possible) is to weld a nut to the broken bolt & because the bolt is hot from the welding it usually comes right out. Try not to break them to begin with, use plenty of penitrating oil & heat if needed, it is usually better to cut the head off of a stubborn bolt & have a long piece sticking out to work with than be heavy handed & break it off flush & have to drill it out.

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