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Dirt Bike Brands - Other
Stripped oil drain bolt head
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[QUOTE="Bunya, post: 1225690, member: 77196"] I agree with the heat - but do several cycles and 'shock' cool the bolt each time using water to cool it as quickly as possible. The repeated heating/cooling will cause the bolt to expand & contract which will help to break loose any corrosion that may be present. Although a L/H carbide drill is a viable option, it will be very expensive, especially in L/H. Because of their hardness, they are also very brittle. In a hand drill it will be [i]very[/i] easy to chip the flutes or break. Also, keep in mind that most carbides are designed for drilling cast iron, copper, bronze, rubber, plastics, etc. so if you go the carbide route, be sure it's an alloy that's designed for tool steels. If there's room to get a full bite, I'd try a pipe wrench that's either new, or has fresh jaws, or 'parrot beak' style channel locks if you have any. If not, or if that doesn't work, I'd invest in the Bolt-Outs that GMC recommends as I've had good luck with them most of the time. Another method that I've had good results with is to weld a larger nut onto the stripped out head. The welding process will get the bolt much hotter than you will with a propane torch which will help break things loose. You then have a fresh nut to turn it off with. Use a 6pt socket or wrench to prevent damaging the new nut. [/QUOTE]
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Dirt Bike Brands - Other
Stripped oil drain bolt head
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