Quote:
Originally Posted by Blown353
FYI, I can get my pump to suck air at WOT and also during sustained turns when the fuel level gets down to just over 1/4 of a tank in my Rock Valley. Once I get down to about 3/8 of a tank I make it a point not to beat on the car because I know it'll suck air and starve the engine. It'll also start to suck air after a prolonged hard turn once it gets down around the 3/8 tank level. Mind you this is on street tires and public roads... on a "closed course" and on sticky tires where I could push it harder the starvation issue would be worse.
I'm kind of disappointed honestly with my Rock Valley EFI tank given the price (and as much as they praised it on the phone)-- it looks good and is well built but I expected better fuel control.
Baffles are really only part of the solution. Baffles only slow and delay the inevitable sloshing of fuel away from the pickup-- to really keep the pump happy requires a sump built into the tank or a surge tank to maintain fuel at the suction side of the pump regardless of what g-forces are doing.
For a car that sees a lot of track time on sticky tires I would build a system that either has an integral drop sump/sump "box" or a system that utilizes a separate surge tank and feeder pump (or a venturi pump to feed the surge tank).
I haven't tried a Rick's tank, but I would like to see inside pics to see how they handled their baffles/sump scheme for the in-tank A1000 models.
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Thanks for chiming in. We did decide to add a sump while the baffling is being done so hopefully that should help as you said. I don't mind a noisy fuel pump as this car is not a daily driver and is going to be pretty damn loud anyway. And if the A1000 has issues it can be easily replaced or whatever.
Was debating on a Rock Valley or Rick's but just can't justify that kind of money right now actually.