The saga continues........
Well I fixed up the manifold, no blowing now. I left Norwich at 9 this morning, arrived in Cambridge at 4.30, driving 3 miles at a time and letting the old girl cool in between. Took the thermostat out halfway but she still overheated. Going to get the rad flushed tomorrow, lots of sludge on the cap.
Just a thought, I fitted one of Frank Jolley's electronic ignition kits and high power coil over the winter. I wonder if that might be adding to the problem?
C.