Exhaust Gascket leaks

[Hammerhead]

(03-25-2018 )alborz Wrote:  the gasket for that cylinder was bad. both my new problem is that the exhaust manifold bolt for the fifth cylinder broke inside. the lower bolt. I tried to use bolt extractor. the extractor broke inside too. and you know the extractor is hardened steel and can't drill through it. anyone has had this problem and solved successfully?

I have done this, and I have fixed it for a few others that have as well.
It's painfully slow, but it can be done.
I have a rotary tool with a long flexi shaft leading to a nice small handle that is controlled via a foot pedal, think dentists type of thing...you can also use a dremel tool.
Get a good quality, small round tipped carbide burr.
Take your time, it's NOT gonna happen fast.
Your using something extremely hard to grind something very hard, so patience is the key.
Good luck, and next time you won't be so ham fisted, because you'll know how much of a PITA extracting the broken piece will be if you don't.