Broken bolt

[Destroyer]

A nice litte trick to use. Since, by the pics, it looks like you have several threads down into the hole before you come to the broken bolt. Take a short, same size bolt (looks like a 3/8 from the pics) and put it into a vise in your drill press. Center punch the bolt in the center, then drill a small (1/8th) hole all the way thru the bolt. Thread the bolt into your engine and using the same drill, drill your first hole into the broken off bolt. The pilot hole will keep your drill bit from walking and you'll get a nice hole down the center of the broken off bolt. Then just unbolt the pilot hole bolt, and start working on the broken off one, either with a left hand drill or using ez-outs or whatever. The real trick to getting the bolt out without messing up the threads in your block is to make that first hole as nearly centered in the broken off bolt as possible.

[RidgeRunner]

I don't envy you on that broken bolt. Nothing much to add other than some support. Been there myself recently. Good advise from all here. Left hand drill bits work very nice, torque in the right direction and builds a little heat while drilling. Before I drill I try to peck on the broken bolt with a hammer and drift.

[Ambush]

Ok I'm going to try the left hand dril first then I'll try drilling it all the way out and use helicoil.

When I get that done can some one give me the torx spec to bolt back that exh manifold?