Keeping it cool

[evildave32]

Here is the setup. rb20 s13 swap, cx intercooler(2 core) twin mishimoto fans running on a duostat , standard mickenny intercooler, stock everything else. Fuel pump is running on a relay to keep fuel running at twelve volts(to eliminate flooding) but is wired into the duostat thanks to the guys i took it to.So the fans run constant but i cannot take it 30 mins up the highway without the mofo wanting to overheat! What kind of setups are you big guys runnin(rb25,rb26) to keep yours cool, hell even the rb20 cats with good setups hit me back and let me know how to fix this...Thanks still a noob with lots of questions

[Carl H]

new nissan thermostat, good new water pump, proper higher pressure radiator cap and fans that are worth a damn.
search tho, there have been several recent topics covering this particular topic.

[Genpac]

This has been discussed several times, as Carl says. I can tell you that I have lots of experience trying to keep my RB20 cool in this Southern Nevada desert.
First off, fan blade type has alot to do with their efficiency. The straight, canted type is the least amount of airflow. The S-bladed style is a little more but neither of these hold a candle to paddle blade style fans. Go to a wrecking yard and look at the fan style the OEs use on both foreign and domestics. Paddle blades. If the application has the room for these thicker style fans, you will always see them in an OE configuration.
I used a pair of J30 13" condenser fans. You will have to be creative with your mounting but they slip right in between the radiator support brackets and the radiator core (where the A/C condenser would go) with a little ingenuity. These J30 fans are pusher style and have 6 paddle style blades for good CFM airflow.

I have experienced that the factory Chuki bumper restricts alot of airflow, even more if there's a FMIC in front of the only opening. I proved this by removing the bumper and disconnecting the E-fans. Running a new OE waterpump, Mishi 2-core radiator (mishi 16psi cap) and VG30DETT thermostat with a properly bled cooling system -- 105° ambient temps the cooling system did its job without any mechanical or E-fan. With NO other changes, I put back on the front bumper then drove around (still no fans) watching the temp gauge (aftermarket gauge with the sensor in the OE position on the water neck) -- it heatsoaked within 15 minutes and was headed to overheat.

The dual 13" J30 condenser fans was enough airflow to keep the car cool with the bumper on. This is my current setup and has had no problems keeping the engine below 190° even here in the desert.

[evildave32]

Thanks for all the info just noticed i am leaking around the elbow connected to the turbo now . Is this coolant? i will pick up the new items that where listed and bleed the system out and see how this works.