13BQuickie
New member
I am installing a Mazda 13B in a homebuilt airplane and I am having trouble deciding how to best assemble the components. The real problem is what order to plumb in the Setrab LOC (oil-to-water) cooler in relation to the radiator. Should it be before the radiator or after? If it is before the delta of the water will be lower and thus the oil temp higher. If after, the water delta will be higher and thus the oil temp lower, but the heat will be routed back through the engine. The Mazda cools the rotors with oil, so about 1/3 of the cooling system is handled by the oil. The engine will be approximately 190hp.