Re: Bolt broke off Inside Hole
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Re: Bolt broke off Inside Hole



If you're questioning how sharp you drill bits are just try drilling into a piece of scrap piece of steel on your workbench and see what happens.  It is quite possible that the bolt you are trying to drill is a grade 8.   In that case you're going to need a really good bit as MO suggested.  Also use that centerpunch as others have suggested.  When using an easy out make sure that the hole is undersized enough so that you have to drive the easy out into the hole with a light hammer.

Paul L.

http://s868.photobucket.com/user/63mopar/library/48%20Plymouth

On Saturday, February 21, 2015 at 5:09:29 PM UTC-6, Donald Gallimore wrote:
I have a 3/8 bolt broken off inside the hole about a 1/3". This is the bolt that holds the alternator to the head. I suspect it's bottomed out. I've tried a left hand drill bit and a Craftsman Drill-Out and I am not removing any metal. I'd sure like to not have to pull the head to remove it.

I'm no drill bit guru but the bits seem to be sharp.

Any suggestions or help anyone can offer? Is it more than drill straight in to get the hole started or what? 
   
Akron Don Gallimore

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