Looking for some sugestions on this unit. Have replaced thermostat, water pump, radiator, all hoses. Pulled head and checked for any restrictions or blockage. none to be found. Have checked the valves, timming and inching pedal for proper adjustments. This unit will run about 30 to 45 min. and peg the temp gauge. running at a temp of 230 F. Also replaced the fan with a high flow fan and a smaller dia. pulley, all parts put on this unit are nissan parts. Unit has good circulation through radiator. Transmission fluid temp is runing at 230 F also. Any sugestions anyone Thanks.