[spencersr]

Well since the temp is going up here is south MS and I decided to put in a 160 thermostat and. broke one of the bolts that holds the housing on so guess Ima learn how to do a heli coil. Moral of the story please people use anti seize

 

[jlcustomz]

I,d center punch the broken bolt & drill with a left handed drill bit after letting something like blaster penetrate soak. the heat of drilling may loosen the broken part & it unscrew while drilling. Also saw nitrogen spray for freezing stuck fastners at advance recently, approx $15 for a can. May try it someday.
Not that I ever had to deal with a stuck fastner in my life.oke: Tightening before loosening can sometimes be helpful in freeing the stuck threads.