Quote:
Originally Posted by Sunny the Model A
ok, a little more info, it is the passenger side motor mount bolt on the timing cover, no damage to the cover that I know of. I removed the cover no problem. But the head broke off, and it is tight enough where I can not pull it out by hand, or get a grip on the back side of it. I thought about drilling and tapping it, but I am a little nervous about ruining my taps, they used to belong to my grampa and I don't want to damage them  |
If you drill it to the proper size and are careful there is no reason that you will ruin the tap. I'd concentrate on getting out the broken bolt. Drill undersized first, being very careful to get it centered. Then try an easy out or a reverse drill bit. After you have the bolt out, then chase the threads with a tap.