What fuel pump to use?

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Feb 10, 2008 | 09:26 PM

#21

ryanvv355

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From: Hudsonville, MI

Anyone have luck with a Bosch 044?

Feb 11, 2008 | 08:27 AM

#22

Schwanke Engines

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From: Springfield, MN

We have used them before, but, dollar for dollar, the Walbro wins hands down.

Feb 11, 2008 | 08:53 AM

#23

ryanvv355

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From: Hudsonville, MI

What kind of power level is the Walbro good for, I've heard alot of people say they are not good for much more than 500hp. The Bosch a better choice for an FI application, to leave room for expandability?

Feb 13, 2008 | 08:12 PM

#24

bada

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From: greenbrier tn

Are the external inline pumps OK. I have a fuel cell now, and hate to think I need to change tanks. Just to put a in tank pump system on it.

Feb 13, 2008 | 08:14 PM

#25

Grewe02

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From: San Diego

In the end setup, I'm going to be using something along the lines of this:

Feb 17, 2008 | 07:41 PM

#26

jomomma

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From: surry, va

my external mount pump is pretty noisy. the in-tank ones will probably be much quieter.

Feb 17, 2008 | 08:28 PM

#27

bada

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From: greenbrier tn

Quote:

Originally Posted by jomomma

my external mount pump is pretty noisy. the in-tank ones will probably be much quieter.

what brand are you using, Does it work OK?

Feb 22, 2008 | 10:08 PM

#28

65SSZO6

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From: Colorado Springs, CO

Does Summit or Jegs carry to Walbro 255? and how much normal asperated HP is it good for?

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Feb 23, 2008 | 10:52 AM

#29

Schwanke Engines

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From: Springfield, MN

Quote:

Originally Posted by 65SSZO6

Does Summit or Jegs carry to Walbro 255? and how much normal asperated HP is it good for?

We have them in stock. They are good for around 700HP, NA

Feb 23, 2008 | 08:07 PM

#30

jomomma

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From: surry, va

Quote:

Originally Posted by bada

what brand are you using, Does it work OK?

ive got the a1000. it works great, but definetly noisy.

Feb 23, 2008 | 08:22 PM

#31

boodlefoof

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On paper the Mallory 5110-FI pump looks to have the right specs for an LSx. Price isn't too bad either. It is an in-line pump and uses 8-AN inlet and outlet fittings.

Feb 25, 2008 | 03:52 PM

#32

TomH

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FWIW, that's a Bosch 044 pump.

Quote:

Originally Posted by Grewe02

In the end setup, I'm going to be using something along the lines of this:

Mar 1, 2008 | 10:01 PM

#33

Grewe02

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From: San Diego

Tom, in addition to that picture, I would also need a return line from the motor, correct?

Mar 2, 2008 | 01:56 AM

#34

TomH

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Quote:

Originally Posted by Grewe02

Tom, in addition to that picture, I would also need a return line from the motor, correct?

The trick is whether you have the "returnless" fuel rail. (The purpose of the regulator is to buffer the constant output of the pump against the variable demand of the injectors; the excess is returned to the tank. GM pioneered relocating the regulator from the rail back to the tank ~'98, and the '04 model year marks the point where virtually all Gen-III engines were converted to the return-less system)

The advantage of the returnless fuel rail (using the set-up in the pix) is that you're only running one line the length of the car. If you have the "right" rails, the return out of the filter/regulator is all you need. If you have the older return type rails, you can still use the filter/regulator and simply block off the return at the rail.

PS...

In-tank setups are perfect for the returnless architecture.

Good luck!

Mar 2, 2008 | 09:28 PM

#35

steveelco

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From: california

are you guys using the in tank pumps or on the frame rail

Mar 2, 2008 | 09:46 PM

#36

Sabre002

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From: Columbia, SC

Bosch 044 pump

look up Jay racing to get it and all the fittings.
old and busted fuel setup. Walbro 255 pump.

Then the new Bosch 044 pump

Last edited by Sabre002; Mar 3, 2008 at 07:36 PM.

Mar 2, 2008 | 10:34 PM

#37

TomH

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My set-up is the external in-line Bosch 044 in the pictures above. If I had to do it over again, I'd go with the in-tank pump. (Quieter and easier to plumb and FWIW, both Walbro and Bosch pumps can work in-tank.)

May 5, 2008 | 09:36 AM

#38

MIGHTYMOUSE

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From: Virginia

i guess i need to get that filter adapter to put this bosch in my tank.

i installed one without that brass piece on the end and it would not hold pressure, i guess that is the check ball assembly.. it looked restrictive... any info?