85 -90 sounds around right for an off load indirect cooled engine.

Bubbles from the water pump suggest there is (was) a leak on the suction side, or in the pump itself. Its not generally reckoned a good idea to run the hose straight onto the pump, as it does not allow the pump to work properly - either forcing too much water past it and possibly damaging the vanes, or flooding the engine, or starving it. The best way is to feed a large bucket with the hose, and arrange the pump inlet to draw from it. This also 'proves' the pump is working correctly.