Removing cylinder/damaged engine bolt?

[Magua]

Hahah, you need more ice-cream containers.

So I'm confused. The dodgy hole doesn't have an oil gallery, and is a blind hole? If so, that's a piece of piss. Don't have to worry about the tang on the helicoil either (don't most people just leave them in place if space permits?). I kept drilling a little bit, then dunking the drill bit in a tub of old engine oil, which meant most of the swarf stuck to it and kept the drill bit lubed anyway. Same deal with the tap. It's really not hard to do, you just have to keep the drill bit dead straight so you don't round out the hole.

But to buy a kit is about $50 -- getting the hole coiled by an engineer would be similar, although you don't get to keep the drill and tap that way. Time to drop the engine out! At least it'll be lighter now

I think I will take it to a shop, know of any? I've bought a helicoil (2 actually), but I don't trust my unsteady drilling hand.

[speedpro]

If you put a couple of studs back in you can use them to align the drill vertically. Get a mate to keep an eye on the alignment while you very carefully drill it out. I like to do this sort of thing in the drill press. It allows you to get everything square and you get good control over the drilling process. I start the tap using the drill press as well just to make sure the start is square. Once started I undo the chuck leaving the tap in the hole and remove the whole case or whatever and finish the tapping and helicoiling process.