Well after a fair while in the shed and a couple of half hearted attempts finally the dreaded heater core sits on the bench, very difficult to blow through, no wonder the gas converter was freezing. not a good scene in a dedicated gas machine.

Externally the core seems in excellent condition so being a copper tank unit I am hoping my local radiator man will be able to remove them and clean the core, if not seems rover spare have them, (call them a heater matrix???), my problem is I don't know how to break down the sall code on the id plate to find out the actual model eg. ea ca etc, sure would appreciate some help.

Thank you