Broken Head bolt
 

Hey well my problem was I think I over torque a new bolt as I was re installing the head and it broke. So I pulled head back off. And head bolt that broke didn't break flush. So it down in the cylinder about half inch. But not broken flush so I can't seem drill or tap without my bit sliding.

Wondering if anyone has any tips.

easy out. Buy all new bolts because they are torque to yield

Re: Broken Head bolt
 

Is easy out different than screw extractor set?

The screw extractor kit says to drill a pilot hole.

Use a center punch..the drill won't walk then

Re: Broken Head bolt
 

Here's the one I'm using but again still sliding.

Re: Broken Head bolt
 

Double post

bigger

Re: Broken Head bolt
 

Okay I'll try that.

Re: Broken Head bolt
 

Hit it hard too. Don't always use the big drill bit first. Start small and work your way up.

Re: Broken Head bolt
 

Thanks for the help guys was able to get it started but it's slowly making progress. I don't think my drill bits are made for this hard metal that or I'll need to get a air drill for higher rpm

Re: Broken Head bolt
 

I don't think you need higher RPM you need a sharper drill bit plus a little oil to cool the drill bit so you don't take the temper / hardness out of the tip.

Re: Broken Head bolt
 

I went got cobalt bits I'm hoping those working better.