Originally Posted by Chasg

Hi,
New to this, but here goes. Got a track day Cossie that is overheating. Not pressurising just running hot after a few laps. The temp is showing hot at the rear of the head although the rest of the system is fairly normal. Fitted with new ally rad and header, new 4x4 thermostat housing,new stat 82degrees,new 4x4 water pump, new swirl pot, new Roose hoses, new sensors. Not got oil modine or heater, but have fitted Roose bypass hose from rear of head to stat housing. Readings from therm gun confirm what the temp in the dash is showing. Link ecu and dash2 pro fitted and set up by Norris. There is loads of flow from rear of head bypass hose when disconnected from stat housing. Have heard that a restrictor in that bypass hose is needed as there is no modine or heater in the system. Any help or advise would be really welcome. Thanks.