Rep Power: 0

So guys about a week ago, my Coolant Temp Sensor broke and My friend(mechanic) and I tried taking the old of off and putting the new one in. The Engine was totally cooled down BUT when we tried to open it it turned for two rounds with the wrench then it just broke. So half of it came out and half of it is still stuck on the cylinder head. We tried everything but couldnt get it out. Do you guys have any Ideas how to to get it off?
And If it doesnt come out i will have to buy the whole Cylinder Head, do you have any Idea of if putting a different Cylinder head will give me more power?
Please help guys im in deep deep crap =/

 
Rep Power: 0

Depends if you have a d16y7 head you won't get much power but if you have the d16y8, d16z6 you will. I recommend sticking with the same head code that you have.

 
Rep Power: 517

If you are going to pull the head off anyway, carry it to a machine shop and have them remove the broken parts. Cheaper than another head.

 
Rep Power: 0

Alright I got the broken pieces out and retreated it. But The mechanic i gave the car too... drilled it and now there a little crack on the lip of the sensor hole... can that be fixed with JB weld??

 
Rep Power: 517

Depends on what and where and the depth of the damage.
Depends on what sort of seal the temp sensor uses.