[Bender]

Hi guys. if you have a radiator that stands straight up. With the grill opening lower compared to the total heigh of the radiator. The air is mainly directed to the lower portion of the radiator. If you have a plate that splits the grille opening and is mounted on the inner end in the middle of the radiator. It will split the air evenly over the radiator surface. As you know the hot water enters the radiator at the top. With more air directed to the top of the radiator. This can help cooling. This also helps when you have a doubble pass radiator.
If the splitter plate angles upwards at the radiator and the air flows well through the core. The flow over the splitter can increase downforce very slightly.
Competition radiators made by PWR can be made with the fins in the radiator on an angle. That way if the radiator is tilted back on the same angle, the air will flow straight through the fins without causing uplift.
Bender