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Thread: Dual Walbro Set Ups?

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Posts: 31-40 of 54
2009-12-23 15:19:59
#31
Just get a single 044 and install it in the tank like i did with a hot wire relay and that should be good to close to 700hp...
2009-12-23 15:26:10
#32
Originally Posted by Payu
Just get a single 044 and install it in the tank like i did with a hot wire relay and that should be good to close to 700hp...


In a b13?



Do you have pictures?
2009-12-23 15:37:39
#33
Originally Posted by BenFenner

A Bosch 044 fed by a Walbro 255 would easily provide for 900+ WHP. Do you really need that big of a margin?


I hope you are not serious about that ^
2009-12-23 15:40:38
#34
I know it increases the output if its fed by another pump. But Ive never found out by how much....
2009-12-23 17:47:29
#35
The more and more I read into this I have decied to buy a Bosch 044 intank and call it a day. I will wire in a relay like Payu mentioned.

Guys keep the discussion going. Some great info in this thread.
2009-12-23 17:59:30
#36
Originally Posted by mazworxsales
I hope you are not serious about that ^
I kinda am. Pressure pumps are pressure multipliers. You put a liquid of one pressure at the entrance and it outputs at an increased pressure on the other end according to it's multiplication factor. From what I've seen, they don't really care what pressure they are fed with.
But maybe this increasing returns only holds true for compressible fluids? I assume gasoline is not compressible.
This doesn't get into flow, only pressure, but overall maximum flow at least increases with dual pump configurations and increases with pressure, and dual pumps in series can sustain higher pressures.

I only have direct experience with and real world data for the BMW e30 configuration which comprises of a feeder pump in the tank capable of a tested maximum of about 190 WHP on its own followed by a similar in-line fuel pump capable of about 220 WHP on it's own.
Together they have supported 400 WHP. This is all on stock base fuel pressure.

I didn't say the combination of the Walbro + Bosch would be a great idea for 900+ WHP but it's a best guess from what I know about pumps and pump configurations. I wouldn't be surprised if I was right or wrong about that guess though.

The doubling of available pressure with series pumps is easy to grasp. The doubling of available flow with parallel pumps is easy to grasp. I can see why you'd be skeptical of an almost doubling of flow potential with series pumps though. What can I say? Somehow I have to reconcile what I've seen on the BMW with the theory...
2009-12-23 18:03:14
#37
^^ Supporting info

Bosch high flow fuel pump, aka the 044 pump. 300LPH of flow at 72.5 PSI. This Bosch 044 fuel pumps easily supports 600-700 horsepower applications. Can be used in sequence with an intank Walbro fuel pump (or better yet a second one of these in-tank) for ultra high pressure applications up to 150PSI. Can also be used in a pair for setups well over 1200 horsepower! See related accessories for parts to convert this pump into an in-tank submerged pump for a stealth high flow single pump application that supports up to 700HP.


Taken from Bosch High Flow Fuel Pump (aka the 044 Pump) : atpturbo.com
2009-12-26 15:31:48
#38
Bosch 042 its the 044 vertion IN-tank i have a 042 in and 044 out...
GET THE GERMANS... NOT THE coreans or Hungarian, chinese.
cheers.
2009-12-26 18:16:09
#39
The bosch 044 can be used in tank also.
2009-12-26 22:15:33
#40
Originally Posted by Payu
Just get a single 044 and install it in the tank like i did with a hot wire relay and that should be good to close to 700hp...


This is exaclty what I am going to do. I have been reading up on the 044 and I am decided.
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