Is it broke from over torque? Or broke from being rusted into place?
You also want to know where that end of the bolt is, before you go drilling
through it...i/e if it goes into the oil, so will the metal shavings as you
punch though.
If broke from over toquing while tightening, then I'd suggest that you make
a few centering bushings that fit snugly in the head bolt hole to guide the
bit in. A drill press will make them, a lathe would be best. Drill each
bushing with the bit to be used to keep it snug and guide it well.
Problem with just going in freehanded is that most likely the bolt did not
make a nice and flat break, so it'd be difficult to keep the bit centered
without a guide. You run the risk of a crooked hole and maybe catching
some block or head material.
Keep going to a larger bushing to fit a large bit to enlarge the hole. You
want to go in as straight as possible.
Put a little grease on the end/side of the bity (not on the cutting edge)
and it'll catch as much shaving as possible. Keep pulling it out to clean
and regrease as you go.
Mike
> [Original Message]
> From: tim lloyd <tim.lloyd@gmail.com>
> To: <oletrucks@autox.team.net>
> Date: 7/27/2006 3:32:23 PM
> Subject: [oletrucks] Busted head bolt removal
>
> Hiya folks,
> I've just about gotten my '54 Chevy pickup back up and running, but
> I've gone and busted off one of my head bolts in the engine block.
> Without getting into the details of how I did it (dumb mistake), does
> anyone have any advice on how to remove the bolt? There's about an
> inch of bolt stuck way down in the block, and I want to see if I can
> get it out without having to take the head back off.
>
> Here's my plan so far:
> -Use a left-handed drill bit (with a nice long extension) to grab a
> hold of the broken bolt and pull it out.
> -Get a long, thin extension for my Shop-Vac and use it plus some WD-40
> to slurp out the metal shavings I created with the drill bit.
>
> I also have a couple of taps and eazy-outs, but they're all too short
> to use without removing the head.
>
> Thanks!
>
> --
> tim lloyd
>
> o
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