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Hi all, Got my membership sorted so hopefully some kind people can offer some advice. I have a 1990 narrow that runs a 2L pinto. When I got the car it was in quite a state, it's a bit better now, but very much still a project! It didn't run at all. Now it runs after an electrical fault was sorted, new battery, timing sorted etc. It passed it's MOT and I then taxed it. All fine. It was then after some longer drives (only a few miles) that another gremlin reared it's head. On the first trip of a few miles, it overheated horribly and vented a load of coolant on to the road. We let it cool off and then a day or so later took it out again and it over heated once more. So then I took the following steps. - Checked the thermostat and replaced the 92c for an 88c (checked the thermostat worked in pan before fitting) - Used two stage rad flush and filled with new coolant. Put it all back together and still overheating. So I then - Swapped out the thermostat for an 82c (drilled a 3mm hole in the thermostat too) - Took of the water pump for inspection which seems ok, is there anything specific to look for? The current set up has a radiator with a pressure cap and no expansion tank. Whilst the radiator allows water through, would it be worth replacing it with a Polo unit and adding an expansion tank to the set up. At the moment the current system vents to the road via an outlet on the radiator filler neck. Or shall I put it back together as is with the 82c thermostat and see where that gets me. I also did a compression test and got 160ish on all four cylinders. The engine as far as i know is standard apart from it has R1 carbs fitted. Any ideas or advice would be great. Thanks