What is the stock boost on a RB25 and whats the normal water temp???

[Sky240PWR]

Well since my KA cluster doesn't work properly i need to know how high should my water temp gauge go before its over heating and i need to know whats the stock boost?

[Joe]

stock boost is 7.5ish psi, as for stock water temp i cant give you a number. if you are still using a KA gauge cluser with the RB temp sender it will never work properly.

[Sky240PWR]

Well i have a after market gauge for the temp but i think it running alittle hot, it's between 200 and 245 deg.

[NISMO_RB25]

Well i have a after market gauge for the temp but i think it running alittle hot, it's between 200 and 245 deg.

are you using the temp sensor that came with the gauge? If not then the gauge will read wrong.

My temps stay right around 180 and goes to about 210-220 max. At about 175 your thermostat should open up and keep the car around that temperature.

You should run about 80% water and 20% radiator fluid. Most people think that more radiator fluid will keep it cooler, but it is actually the opposite. more water is better. I also run an additive called 40 below.

[Imissmyturbo]

Last summer I ran 100% distilled water with some 20 below zero addative. When it started to get cold out I ran 20% coolent. Now it's getting warm and I need to switch back. My PFC shows water temps around 85-91 cruising. But today I was having some fun on the hyw and the temps shot up to 95-96. In the summer it will go to around 100. I really think my FMIC is the problem since it is mounted on an angle and that effects airflow.

[Sky240PWR]

Wow, well Mckinney hooked everything up so i'm sure they did it right but i do have alot more coolant then water in there( like 80/20) so maybe that's the problem. I have the Koyo radiator,a eletric fan and a Greddy intercooler so i think it should be keeping it pretty cool so I'll try the water/coolant thing..thanks