What temp is your fan set to run?my car runs about 2 degrees higher than the t-stat (192) even in 110 degree heat , in traffic
any traffic it goes over 240 pretty quickly.Doesn't mater how big your radiator is , engine temp is still a function of when the thermo opens and what temp the fan(s) run.
A larger radiator just gives you more heat sink capacity
What temps are you running that you need to lower?
Ever pulled the radiator out and cleaned out all the c*p that accumulates in the front of the radiator itself blocking the airflow?pretty sure I'll try a new two core radiator at this point.