Good advice! I'm in Phoenix so all the cooling stability was the first round of maintenance. I've replaced everything but the radiator and the blue clutch mod is priceless here. Thanks for the feedback and good luck fixing that cooling issue!The Turbo has motivated me to do the maint.
I say the most important thing to do with the Turbo is cooling maint.
I blew the heater bypass valve over two years ago on the freeway and was stuck in traffic for 3 minutes before I could safely pull over. Was not happy but I had it towed home and replaced it with a bypass hose and filled it up with water and tested it. No blown HG and it operated fine. I flushed the system and refilled it with coolant and it drove fine during normal driving for the past 2 years. no coolant loss. It however never was the same when I drove up mountain passes or when it was 100 degree outside and I was blasting the AC on idle. The obd2 torque app was at 227 to 231 degrees where before it stayed under 219.
During the 2 years I did everything to fix the high temps just like Joey did initially. 3row CRC rad, 2 different brand new thermostats, new water pump, 1 blue fan clutch (oem), 1 modded blue fan clutch (Wits End), HPS silicone heater hose kit, new heater valve, 4 coolant flushes with pen toyota red and pink, 12v aux 8" fan, new radiator oem cap, new AC condenser. All of this did not solve my cooling problems.
I'm hoping with this fresh rebuild fixes my cooling issues.
If he had 60k since last HG I would leave it alone and slap on the Turbo and do the cooling upgrades (new rad, thermostat, hoses, heater valve water pump and mod blue fan clutch).