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twin fuel pumps

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Old Jun 17, 2015 | 11:15 AM
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Default twin fuel pumps

any one know what one these would do combind one Mallory puts out 63 gph at 65 psi 110gph free flow so I have 2 pumps
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Old Jun 17, 2015 | 11:27 AM
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What?
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Old Jun 17, 2015 | 11:34 AM
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I have two Mallory performance in line electric 11106m fuel pumps what would the total out put together thanks
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Old Jun 17, 2015 | 11:38 AM
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Are the plumbed in a series or parallel?
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Old Jun 17, 2015 | 11:47 AM
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thay will be parallel
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Old Jun 17, 2015 | 12:31 PM
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They are 110 GPH pumps. So in parallel, you get 220 GPH. That's about 1500+ HP worth of fuel.
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Old Jun 18, 2015 | 09:01 AM
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thanks so I should be good for 800 rwhp on a turbo 4.8
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Old Jun 18, 2015 | 09:30 AM
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What size injectors are you running? Those pumps are about the same as walbro255s. Looks like with 60psi base pressure and 25psi of boost (85psi pump pressure) they will flow about 360L/hr which is good for about 825rwhp on pump gas. Would be roughly 580rwhp on e85.

I would personally do dual walbro400s instead.
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Old Jun 18, 2015 | 03:33 PM
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80 pound injectors thanks
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Old Jun 18, 2015 | 06:15 PM
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Summit's listing says they only flow 63gph at 65psi

Surely that's only around 250lph each at most ?

Certainly for size and price...they arent anything spectacular, but 2 should be safe for your goals.
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Old Jun 18, 2015 | 06:39 PM
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A pair of racetronix 340s are the same price as one of these pumps and flow twice as much.

Same goes for bosch 044 pumps if you need externals.
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Old Jun 18, 2015 | 07:12 PM
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i need externals, i have a sumped fuel cell. I had a blow thru set up on the car and used one Mallory thought if I got a one more to match it would be good to about 800 rwhp on race gas. not e85. on a efi 4.8 with a 5.3 truck intake. thanks for the info..
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Old Jun 18, 2015 | 07:15 PM
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Originally Posted by JoeNova
A pair of racetronix 340s are the same price as one of these pumps and flow twice as much.

Same goes for bosch 044 pumps if you need externals.
Bingo. For turbo cars-

340s in tank.

044's external.

I like the 400's, but they fall off HARD with big pressure. If your running anything north of 15psi with a 65psi base pressure, I'd advise against it.
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Old Jun 19, 2015 | 05:03 AM
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Originally Posted by sbdgbody
i need externals, i have a sumped fuel cell. I had a blow thru set up on the car and used one Mallory thought if I got a one more to match it would be good to about 800 rwhp on race gas. not e85. on a efi 4.8 with a 5.3 truck intake. thanks for the info..
Yes that will work fine, and under the circumstances makes sense.


And the 044 can be used internal or external.
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Old Jun 19, 2015 | 06:32 AM
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thanks guys
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