|
Thinking way back to physics class and fluid dynamics...
Flow is proportional to resistance, I think. So if the resistance in one oil cooler were twice that of the other, it would get 1/2 the flow...but it would still get flow...
By having 2 coolers in parallel, you are dropping downstream resistance, which might actually increase total flow to the coolers...therefore increasing total cooling.
Sounds like putting them in series is tried and true. But I do wonder if doing it in parallel would work better...
In series, oil that has already been cooled off by one cooler, now goes into the next cooler. The difference in oil temp to ambient temp is lower, so the second cooler "cools" much less...
Most cars have their coolers set up in parallel. Think of a bugatti, with its 8 coolers or what have you. They are not in a row, rather, in parallel. Same with the Ferraris: 2-4 coolers, one to two on each side, in parallel. NOT in series.
Same with radiators in pick up trucks. The water coolers are in parallel, not in series...
I suspect that in the 911's added oil coolers are added in series, because its easier... not necessarily "better."
|