Fast Intentions Stage 2 TT build by MA-Motorsports.

Spooler

Coolant pressure testing has been completed. The best setup is to change your car to a Z1 170 deg thermostat and use a Nissan 88kpa radiator cap which comes on the 2012 and up 370z's. You also need to stick with the factory pressurized or non-pressurized coolant tank. They have enough volume to hold the extra coolant to keep your levels correct. If your engine is healthy your coolant pressure should be around 15 to 17psi under max load. The pressure climbs up to around that level in the upper rpm range. When the thermostat is closed your pressure may rise up during warm up. It is perfectly normal. I hope this helps some folks get an understanding of what is going on. You want to record a baseline of what your car does. There are many variables. Where the coolant pressure sensor is, Thermostat, and what radiator cap is being used. You are looking for a change from the normal.