Foolproof Way To Drill Out Broken Bolts In Engine Blocks
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Don Snilner, Grand-Mere, Quebec: "Here's a foolproof way to drill out broken bolts in engine blocks, heads or any other kind of housing whenever the bolt breaks off below the surface. Cut off a 3/4 to 1-in. length of the same size bolt. Using a drill press, drill the center of the bolt portion with a small drill. Install the drilled-out bolt in the top of the hole where the bolt is broken. Using the same small drill, drill out the broken bolt using the drilled bolt as a guide. Once the broken bolt is center-drilled, you can use a bigger bit to drill out the broken bolt and it'll always stay centered."
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Foolproof Way To Drill Out Broken Bolts In Engine Blocks ENGINES 33-5-36 Don Snilner, Grand-Mere, Quebec: "Here's a foolproof way to drill out broken bolts in engine blocks, heads or any other kind of housing whenever the bolt breaks off below the surface. Cut off a 3/4 to 1-in. length of the same size bolt. Using a drill press, drill the center of the bolt portion with a small drill. Install the drilled-out bolt in the top of the hole where the bolt is broken. Using the same small drill, drill out the broken bolt using the drilled bolt as a guide. Once the broken bolt is center-drilled, you can use a bigger bit to drill out the broken bolt and it'll always stay centered."
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