I use a good sharp punch that come to a point. Work around the edges of the bolt in a counter clockwise direction. Tap the punch with a hammer, but don't hit them hard and stay off the engine block with the punch. You can use a solvent such as WD-40 and work the bolt in both direction until it begins to turn. Take your time and use the WD-40 often. This may be a little time consuming, but you will get it out far enough to get a pair of locking vise-grips on the bolts and turn them the rest of the way. If this fails, use a sharp punch to punch a dimple in the center of the bolt, and drill a hole into the bolt. If these are hardened bolts they will be very difficult to drill. Start with a small bit, and work your way up to the larger size. Once the hole is large enough to use an easy out, you can get it out this way. I have had better luck with the wedge type of easy outs, than the tap type. There is no easy way to do this, so take your time and realize you have one shot at getting it out, and if you break off a drill bit or easy out in it, you won't get it out!
Glad I could help you. Good Luck!!!
2006-12-19 01:00:05
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answer #1
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answered by Anonymous
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Using a drill, drill a hole in the center of the broken bolt. If it's a 1/2 inch bolt, use a 3/8 or 5/16 bit. If its a 5/16 bolt, use a 3/16 or 11/64 bit, you get the idea. Just leave enough sidewall of the bolt for the E-Z OUT to grab Make sure you center the hole as best you can. Using a hammer and a sharpened punch to make a starting dimple makes it easier. Drill the hole to about 1/2 inch deep. Go to any auto parts store. Tell them you need an E-Z OUT stud remover. Make sure it is the right diameter for the hole you drilled. An E-Z OUT is a tapered bit with ridges spiraling down it's length in the opposite direction than the threads of the bolt you are trying to remove. Insert the E-Z OUT in the hole and turn counter-clockwise using an adjustable wrench. Hopefully it isn't stuck to bad and will come out easily. The only other alternative is to drill the whole bolt out and re-thread the block. Good Luck. Wish I could do it for you. It isn't difficult. If you have someone do it for you, don't get ripped off. A moral and descent mechanic can do this in as little as 5 minutes and shouldn't charge you anymore than $20. There's only $5 worth of labor in it, but sometimes you have to pay for talent. Hope this helps.
2016-03-29 00:08:45
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answer #2
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answered by ? 4
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spray it with wd 40, tap it with a punch, repeat several times. you want to loosen the rust if that is why the bolt broke, you are trying to get the oil to wash it out. if the bolt broke because it was overtightened you want the oil to lubricate the threads so the remaining piece will turn without friction. then use a center punch and carefully make a dent in the center of the broken bolt. take the correct size drill bit for an e z out for that size bolt and drill a hole in the dent. sometimes i have found it best to start the hole with a smaller size bit, then go to the right size one. IMPORTANT; DO NOT DRILL TOO DEEP! you could drill right into the water jacket of the engine block. if you can, determine how much of the broken bolt is still in the hole, then drill just a little short of that amount. now tap the e z out into the hole, make sure it is in straight, so the bolt will come out easier. this is a slower process than removing a bolt, so go slow. if the bolt doesn't move when you try to turn it out, spray it with more wd 40 and tap it with the punch, around the e z out. if the e z out spins in the hole, drive it in a bit harder. be careful working with the e z out if you break the e z out off in the hole you are going to have to get a welder to get it out! i hope this explains the steps well enough for you, good luck.
2006-12-19 01:32:15
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answer #3
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answered by car dude 5
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It depends how much bolt is hanging out of bolt hole. If you have enough to get vise grips on, then use that. But if that was the case you would of probably already done that. If you got just a little sticking out, use a thin cutting blade to make a notch in top of stud, then use a flat head screw driver to back bolt out.
Now if it's broke off flush with the block, then you can either use a reversible drill bit. and hope that it bites and backs out. Or you can drill the bolt out and re tap the threads.
Good luck!
2006-12-19 00:53:31
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answer #4
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answered by michael081278 4
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If non of these other tips work for you and you are lucky enough that the bolt isnt broke off too far down inside the block, you can take a nut and place it up to the end of the broken bolt and weld it to the bolt through the center of the nut and then just put a wrench or socket on it and back it out.
2006-12-19 01:36:00
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answer #5
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answered by Okie Guy 2
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soak the threads with penetrating oil if possible. Then drill the centers of the studs enough to get an easyout into there, and back the stud out.
2006-12-19 00:52:14
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answer #6
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answered by Ralfcoder 7
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drill the right size hole exactly in the center of the broken one drive in eazy out, unscrew broken one,if you can find or afford a reverse drill bit you might get lucky ,then add some heat if you have to
2006-12-19 00:56:11
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answer #7
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answered by vincent c 4
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