How to remove '1' cylinder Head bolt head by drilling?

Old 06-13-13, 05:50 PM
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How to remove '1' cylinder Head bolt head by drilling?

Hi Guys-

So I am trying to do a Headgasket on my 1994 Accord EX F22B1 because of overheating issues.

Long story short, I am unable to pull the head and do Headgasket because of '1' Damn bolt.

I am drilling on the bolt right now with a Milwaukee drill bit and used engine motor oil as a cutting oil.

I am kind stuck now, not sure how to completely remove the head of the bolt, so I can pull the head?

Please have a look on the pictures and advice, I am kinda stump now. Because if I try to drill by using 9/16', it's not removing anything and seem like bolt head is not budging.

Thanks in advance for all of your help and advice.
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Old 06-13-13, 06:09 PM
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It's a grade 10.9 bolt. (very hard)
You should be using a left hand colbalt drill or something like this.
Craftsman 6 pc. Power Extractor and Damaged Screw Remover - Tools - Power Tool Accessories - Drill Sharpeners & Attachments

You need cutting oil not used motor oil, all your doing is hardning the metal as your trying drill it.
Old 06-13-13, 06:56 PM
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need to start with a small bit and step up. it will cut better. and you wont have to go to deep just enough to get the head off.the rest of the bolt should come out easy once the head is off. and watch your shavings. id put a strong magnet real close by to catch them.
Old 06-14-13, 03:14 AM
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Visit the link below this tool is incredible.

Broken Bolt Extractor Kit | Remove Broken Bolts |

Thank You

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