Thread: Another radiator question.

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J. Robinson has it right on, you'll need to be able to purge the air out. So a slight tilt would allow that to happen. Shouldn't need a second pump though, the DeLoren had a V6 Volvo engine and the rad was up front. Coolant was moved through 1 1/2 inch aluminum tubing with rubber hose elbows, nothing but the engine pump was used. If I remember right, I think they ran two rads, neither one was real big. Long, narrow, and two core aluminum, they didn't have much height to work with, with the sloped wedge nose. I used a tilted rad on the airplane I built, with a petcock on the high end to purge the air. Inlet and outlet were at the same end of the rad, with a divider plate welded in between. The coolant travelled down one half of the rad, across the end tank and back up the other half to the outlet. The amount of air going through the rad, is going to make or break the attempt. I had a small 4 cylinder Chevette rad, but I also had a 6 ft fan up front to suppy the air. Sniper