Fuel coolers

[Permanent grin]

I am looking at all sorts of weight reduction areas with my white car for next season, one of which is running a LARGE external fuel pump and interchangeable fuel cells with dry break connectors. The idea being that for the track I can easily swap to a 10L race fuel cell. Plumbing will be -10AN tank to engine bay, Y-block to 2 x -6AN feeds to rails, rails to -6AN to FPR then -8AN return.

The issues with this come from

a) the BIG fuel pump pumping hard at idle and low revs heating the fuel up
b) the small fuel cell doesn't hold much fuel to allow it to cool down again

Potential ways to combat fuel temperatures

a) use of a fuel pump controller allowing slower pumping at low revs and idle
b) a fuel cooler on the return line.

From what I can find there are 3 basic types of cooler

1) finned tube
2) radiator type
3) cryo

Where my car is dual purpose, this poses a conundrum for me; cryo would be best for the track but no good for the street, radiator type would work for both but add weight, finned tube won't do enough IMO unless used in conjunction with cryo. Number 3 would allow some cooling for street use (although I estimate the fuel cell to be 45-60 L, so less of an issue).

The reason I am opening this up for discussion is I would like to know people's opinions on coolers and pump controllers, whether anyone has done much research into this area and if anyone knows of any good products.

André

[i3igpete]

Are you using braided hose or hardline for the feed/return? Hardlines alone can reduce temperature significantly since they're routed under the car, where there is a lot of airflow. But the insulation from a braided hose will negate that.

[Permanent grin]

I was going to run nylon over-braid, Russell Performance Classic.

A worthy consideration though. Thanks

André