Quote Originally Posted by cjc_td5 View Post
Well what a complete ***** that job is!

I removed one wing and the radiator and support panel to get myself some good access to the water pump. The workshop manual said to remove the thermostat and thermostat housing. That is where my day turned to custard. Of the four bolts that hold on the housing, one came out and three sheared off at the bolt heads. Copious amounts of wedging and penetrating oil the housing is not even looking like releasing... I get say 0.5mm of clearance between the housing and the head so that appears to have released. I assume the bolts themselves are locked solid in the housing.

Tomorrow I might have to try drilling out the bolts in the housing but leaving a stud into the head that I can get leverage onto to wind them out of the head. I don't like my chances with such long bolts and also the steel bolts being harder than the surrounding aluminium.

Any magic ideas?

Cheers,
Chris
hi the housing i have also cast iron one jim