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I would like to know any tricks to remove a snapped off steel bolt from an aluminum block. The bolt was snapped off flush with the block; however, it was a water pump bolt on a 1992 3.3 Chrysler V-6 and it was on the passenger side. I did win after many (MANY) hours with a right angle drill and a carbide pointed bit, but had to retap the hole and I never did get all the bolt out; therefore, I had to use a shorter bolt on the new water pump. There was no room I could see to weld and the story only gets worse. HOWEVER, I sure would be interested in any tricks you folks may have. This is my son's old clunker and I am sure we will have to work in it agan. Thanks folksGeezerPower Mig 255C185 TIGBlue 175 MIGRanger 8 Kohler 20HP1974 5K Lincoln/Wisconsin Powered (Cherry)Victor/Harris O/AK 487 Spool Gun
Reply:Oxy Fuel let the steel get red hot and blast the high flow oxy.
Reply:Originally Posted by Fat BastardOxy Fuel let the steel get red hot and blast the high flow oxy.
Reply:I would not blast with torch. That trick works great on cast iron but aluminum just melts.What I do is mig a flat washer then a nut onto the broken bolt. The heat from the mig and with a new nut on usually make removal easy. I live in southern ontario where they use a lot of road salt to keep the roads clear. Lots of rust and corrosion. I have removed many a broken bolt. I have also removed broke spark plugs from Ford 5.4 pickups.Miller Thunderbolt AC/DCMillermatic 211 and spoolmatePower Plasma 50Syncrowave 180 SDMike
Reply:I do something similar to the last post. I take a big nut, say a 3/4" nut for a 3/8" stud. I hold it over the broken bolt and blindly weld the inside. The heat stays in the center and does not mess up the parent material, even aluminum. Sometimes it takes 2 or 3 times, but each time the bolt cools it also shrinks a little. I works almost every time even when the bolt is broken off below the surface. I detest ez-outs and have had terrible results with them. One important thing to remember is to keep the ground on the nut. If the welding current travels through mechanical parts of the engine it will create future problems.
Reply:Originally Posted by RagtimeI would not blast with torch. That trick works great on cast iron but aluminum just melts.What I do is mig a flat washer then a nut onto the broken bolt. The heat from the mig and with a new nut on usually make removal easy. I live in southern ontario where they use a lot of road salt to keep the roads clear. Lots of rust and corrosion. I have removed many a broken bolt. I have also removed broke spark plugs from Ford 5.4 pickups.
Reply:Another strategy that I was told a story about....this was a broken head bolt a guy had to remove, a couple inches below the deck of the block, he stuck a piece of pipe that had the OD of the bolt hold down into the block, inserted a steel stick electrode in the middle of the pipe, had his daughter flip the power on and off on his buzzbox to weld the two together, then used a vise-grip on the pipe in order to remove the whole works after the weld had cooled.Sometimes you gotta get creative
Reply:Another strategy that I was told a story about....this was a broken head bolt a guy had to remove, a couple inches below the deck of the block, he stuck a piece of pipe that had the OD of the bolt hold down into the block, inserted a steel stick electrode in the middle of the pipe, had his daughter flip the power on and off on his buzzbox to weld the two together, then used a vise-grip on the pipe in order to remove the whole works after the weld had cooled.Sometimes you gotta get creative
Reply:Originally Posted by blackbartI do something similar to the last post. I take a big nut, say a 3/4" nut for a 3/8" stud. I hold it over the broken bolt and blindly weld the inside. The heat stays in the center and does not mess up the parent material, even aluminum. Sometimes it takes 2 or 3 times, but each time the bolt cools it also shrinks a little. I works almost every time even when the bolt is broken off below the surface. I detest ez-outs and have had terrible results with them. One important thing to remember is to keep the ground on the nut. If the welding current travels through mechanical parts of the engine it will create future problems.
Reply:Originally Posted by greenbuggyAnother strategy that I was told a story about....this was a broken head bolt a guy had to remove, a couple inches below the deck of the block, he stuck a piece of pipe that had the OD of the bolt hold down into the block, inserted a steel stick electrode in the middle of the pipe, had his daughter flip the power on and off on his buzzbox to weld the two together, then used a vise-grip on the pipe in order to remove the whole works after the weld had cooled.Sometimes you gotta get creative |
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发表于 2021-8-31 22:30:36