ka rad and sr piping lead to overheating?

[KoukiS14]

Preach on! Word of wisdom right there. Get a thermostat in ASAP.

@Hector

not good to do captain , thermostat does alot of things , not just holding pressure inside your cooling system to make heat for the heater and so on, but the pressure that keeps it in the motor makes the coolant reach all the little corners and the low flow spots in the engine , when u dont have a thermostat u could potentially create hot spots inside the engine and blow a head gasket , find out what nissan part number it is and buy a oem thermostat , aftermarket ones tend to suck poopie