Best course of action--broken header bolts

[manny]

I go for the extreme side for me normally what i handle is weld a nut to it.... The heat of the weld shrinks the bolt as it cools and it pops loose. Your best bet would be as stated go slow with carbide bits. Stick the bit in a hole that is clear and mark the bit of the depth of the hole. That way you don't go too deep and hit water in the blind hole. For the stripped hole retap it, and try a fresh bolt chances are you just pulled the threads on the bolt as old, and brittle as it was the threads in the head may still be goodcratchhe: you think jon......:banghead: