My names Turkish:
I seem to recall that in the event of a fire that the bolts holding the engine Pod to the mountings were designed to fail and let the engine drop away?
Negative, Turkish. The fuse pins are primarily there to allow the pod to detach in the event of an overstress - as in the Anchorage incident, where an Evergreen freighter (747-100???) lost an engine in the climb, in exceptionally severe turbulence. They're stainless steel, IIRC - much less likely than the airframe to melt in a fire!
R1