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Broken coolant drain bolt ! Help broken drill bit...

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  #1  
Old 05-18-2019, 07:46 PM
Christopher Valencia's Avatar
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Default Broken coolant drain bolt ! Help broken drill bit...

Okay long story short I was using a screw extractor to get it out and broke the actual drill bit inside. It's like a 5/64 or something like that. I'm going to just drill and tap it. Could I heat up the broken drill bit and then drill it through ? Or would it warp my engine. Hope I make sense.
 

Last edited by Christopher Valencia; 05-18-2019 at 07:50 PM. Reason: Didn't make sense lol
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Old 05-18-2019, 08:00 PM
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Is there enough available that you could grind a slot into it and use a flat blade on it?
 
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Old 05-18-2019, 08:04 PM
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Not anymore lol Its at the end of the bolt now and the broken bit is right there stopping me from drilling further. So I gotta just get passed the end of the bolt/broken bit somehow... then I could re thread it basically..
 
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Old 05-18-2019, 08:14 PM
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Some people can take a cold chisel and gently tap it at an angle to back out a broken/stuck bolt.not 100% sure from your original post but have you tried an easy out?
 
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Old 05-18-2019, 08:26 PM
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Yes that's what I originally tried but I broke the drill bit before I had a chance to use the reverse bit.
So then I bought the actual tapping kit.
Basically I messed up even more lol now I just gotta drill through the bolt with the broken bit inside the bolt
And then rethread it. I already drilled almost through it but the last 8th of an inch is hard to get by with the bit being right there .
 
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Old 05-18-2019, 08:45 PM
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Brr sure to use some cutting oil. Hopefully that will help some.
 
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