Quote:
Originally Posted by Walt Fricke
If you have two equal (or nearly so) coolers, which have equal (or nearly so) air flow, you want to run them parallel. Heat transfer is a function of the temperature delta between the cooling air and the fluid. Having hotter fluid in both coolers means they both have the highest oil temps and thus the largest delta, and are the most efficient. See Carrol Smith on this and other race engineering subjects.
Doesn't Porsche do this with the water cooling radiators, one on each side?
Here is a picture of splitting the flow, and on a modified car it is not hard to do.
But on my stock class SC, with one Mazda cooler mounted in the center of the front valance under the bumper, I just ran them in series, with the better cooler (the Mazda) being the first in line, and the fender mounted Lemke getting the second shot. It is the less efficient cooler anyway, and some guys remove their fender mount cooler when they switch to a front mounted one. But it is easier in many ways just to leave it there. As long as you don't need to shed every ounce of weight it will help some. |
Researched the mazda oil coolers, and some folks were concerned that they cause too much back pressure? Which mazda cooler did you use?
Looking on ebay, there are lots of oil cooler from BMW, Land rover, and others, that are 2-3 inches tall and 1-2 feet wide... Seems like many of these could be used?
I understand that a setrab 24inchx4inchx2inch would provide the best cooling, but that thing ain't fitting without some serious body work and fender work...
If one places a cooler in parallel, then the new coolers flow rate is less important as its flow is all "additive" to the original flow. Even if the flow to the new cooler is less than optimal, it stiff provides additional cooling, no?