cheers sorry its a 2wd saff i had a prob with the thermostat the wrong way round so i thought so i re newed it and put the gold bit towards the head re filled with coolant and is still the same. its a standard rad with pro alloy intercooler in front.. the fans stay on when driving too and rad just luke warm but temp gauge just below the O on norm.. new pump hoses engine with new block brandnew t34.. rad also new.. i have tried all i can think of.. although it dont get so hot that it boils the headertank even left ticking over for ages... getting real pissed off with it now.