Snapped off thermostat housing stud

[nomisthewise]

Help!

I have snapped off a thermostat housing stud, and still can't get it out with a stud extractor

Can i use heat on this? Only I am worried about cracking the head

[MarkyB]

Take a look at this thread;
http://www.mmoc.org.uk/viewtopic.php?f= ... hilit=stud

[bmcecosse]

You won't crack the head with reasonable heat application. Be very wary of extractor - if it snaps off there is a real problem! Usually just apply release oil - lots of it - and try drilling the stud out - with a left-hand drill if you can get them. Start small and work upwards until there is virtually nothing left. The remains should then 'shell out' - and you can then clean up the thread with a 5/16" UNC tap.

[nomisthewise]

Many thanks to all. I've used oil heat a bench drill and finally
got it out!

[bmcecosse]

Great success!