Removing broken Ex-Manifold bolts from cast iron heads

[Qikbbstang]

This is a tip from the latest Engine Builder Magazine......Sure hate to think if IT fails:

[mmason]

That method works quite well. 40 years ago I worked for a welding repair company that specialized in keeping old trucks running. We often did things on a regular basis that others said could not be done. I also torched out frozen king pins on quite a few trucks.

[MT63AFX]

This is a tip from the latest Engine Builder Magazine......Sure hate to think if IT fails:

It's how my uncle did it 50yrs ago. I've mentioned it a few times on the FE Forum, RodC.

[runthatjunk]

Is there any chance that would make the surrounding material prone to cracking or brittle?

[cbolze]

The female threads don't burn when torching the broken stud due to the rust between the 2 mating parts. Rust is technically "oxidized" metal, so its like trying to burn ashes, they are already burnt. Next time you fire up the torch, get a heavily rusted piece of scrap metal, grind a spot on it to white metal, and try to burn a rusty spot, then try the clean spot and see how fast it burns. Also there is a big difference in burning a steel bolt vs. cast iron head.
Courtney.

[chris401]

Something my dad showed me. Haven't screwed up yet.