No. What you have right now equates to no thermostat at all because it's open all the time. You need a thermostat and a 160 ain't it. You need either a 180 or a 195. The thermostat has zero to do with how hot the engine runs. All it does is regulate the minimum operating temp, not the max. The max operating temp is regulated bu the radiator and "the rest" of the cooling system.
