If it were me and I had spent all that money getting him/her/them back to scratch with all the work you have had done, I would replace the rad with an oem or after market one, full coolant replacement and full bleed. You've come this far lolSo, several weeks later, new head gasket, new cam belt, new water pump, new plugs, new ht leads - kind of, let's get this old girl/boy/gender neutral, sorted. It was when it came to bleeding the cooling system that another problem arose. Turns out that at some point in the poor old thing's life it was fitted with an after market radiator - that doesn't have a bleed valve. So bleeding has to be done at two bleed valves instead of three. Result - the car drives beautifully but within 3 minutes of stationary idling the temperature is just about to go into the red. At which point I switch off the engine. Conclusion, there is still a small amount of air in the system somewhere and because the radiator can't be bled it's not getting rid of all the air. I may be wrong but it seems an unlikely coincidence.
Anybody had this occur? Can a bleed valve be fitted into a radiator that doesn't have one?
Any suggestions gratefully received!