[Ozarkguy]

Here are the photos of the broken brass fitting nut.
I am putting good over 100lbs of pressure on the wrench but bit wont turn , it twist some but wont turn? I hope those treads on the cilinder are not cuntercloackwise ?

Buy the looks of the photo you have some room to work. The aluminum housing expands faster than the brass fitting so thats a good thing. One problem you can run into with the four sided tapered extractor is that you can expand the fitting when you drive it in. But you are at where your at. Before drilling out the fitting I would get a good bite on the fitting with you extractor and with pressure applied in a counterclockwise rotation apply heat to the boss that the fitting is screwed into (avoiding the fitting). It looks like there is teflon tape on the fitting so it won't be seized.. and should move as the heat is applied. good luck..

Jimmy