OK, latest update guys, I took the advice of Rog and Heinz and fabricated a blanking plate for the rad and made it to cover approximately half of the rad surface area (mounting it to the lower portion of the rad). Initially I found that the temp held better at around 84 for the first 20 mins or so of normal driving which is definitely an improvement. Then I came to a small town and had to queue and the temp rose to about 95 which was fine. I then went onto a faster road and found that as the car was pulling up to 70 the temp started rising again up to about 112 and I eased off the throttle, the temp then very slowly started dropping back. I’m now wondering if I should decrease the size of the blanking plate to allow more air through at the higher speeds or increase it further. Incidentally on returning home I could easily hold both hot and cold side rubber hoses, there didn’t seems to be much difference between them temperature wise.
