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Electric Fuel pums - fuel injection

Electric Fuel pums - fuel injection

Old 06-07-2007, 10:26 PM
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Default Electric Fuel pums - fuel injection

What make and models of electric fuel pums are guys running for fuel injection? What's good and what to stay away from. I looking to upgrade from the stock fuel cool on a 502. Also any ideas on fuel pressure regulators?
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Old 06-08-2007, 02:39 AM
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Essex-sx billet pump is more durable then the aeromotive 1000,aircraft rated too which tells you something. Aeromotive regulators are fine,Smitty
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Old 06-08-2007, 04:54 AM
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hey smitty, is that photo of your own setup ? if so let me make a suggestion please... a long time ago an engineer from a manufacturer of data equipment told me that if i stopped hard mounting the sending units ( like your fuel pressure in the pic) i would get a lot more accurate output and a LOT longer service life . what he wanted me to do was put the sending unit at the end of a short piece of hose and soft mount the sending unit... in my case that meant a tie wrap w/ a piece of taped foam...

he was right. sending unit failure essentially disappeared and all the hysterisis in the data disappeared.
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Old 06-08-2007, 07:32 AM
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Originally Posted by articfriends View Post
Essex-sx billet pump is more durable then the aeromotive 1000,aircraft rated too which tells you something. Aeromotive regulators are fine,Smitty
Is that a 3 port regulator? Part #? I assume there is a return line back to the tank or the fuel/wwater seperator. Do you get any bounce in the fuel presure with a mech. gauge?
Thanks
Mike
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Old 06-08-2007, 01:05 PM
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I just scraped my entire cool fuel system on my modified 502 MPI's and replaced it with a custom set up on my Top Gun. I only have about 550 HP per engine so I didn't need a huge pump. I wanted a pump with low amperage draw. After much homework I went with Weldon's 600A flow thru pumps. Not the cheapest but very good pumps and very low amperage draw. So low in fact that I used my stock wiring and relay. Pretty quiet and enough fuel flow to support way more than my 550 HP.
I replaced my tank pick up with 1/2" units then #8 hose to a RAMCO fuel/water filter then #6 lines to the pump then thru a second 10 micron filter then to the front of the fuel rail then out the rear of the fuel rail to a Weldon regulator then thru a fuel cooler and back to the tank. The system works great.
You will have to do a little welding and modifications to the fuel rails to attach the #6 lines. The stock lines are too restrictive in my opinion. and make sure you check to see if you have one of the fuel rails with the factory restriction feeding the #7 injector. You should open that up(very carefully) if you are uping the HP from stock.
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Old 06-08-2007, 02:04 PM
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We all run Aeromotive A1000's with bypass regulators in this area...probably 2 dozen of them I know of and have never seen or heard about any problems or failures.
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Old 06-08-2007, 06:24 PM
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Aeromotive 1000 for a hopped up 454 Procharger M-1, 6 psi. 42# injectors which you should have stock. I kept the cool fuel with the stock regulator taken out, replaced with a procharger base reference for the supercharger the stock fuel pump was replaced with a manifold that replaces the old pump works well and keeps the cooling. Cooling is important for supercharger detonation potential. Re- mapping the ECU was the best money I spent.
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Old 06-08-2007, 07:33 PM
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weldon....................... period.

use there regulator as well.

and cool the fuel before AND after too,,,,

and RAMCO's filter is also great.
Attached Thumbnails Electric Fuel pums - fuel injection-e7.jpg   Electric Fuel pums - fuel injection-e3.jpg   Electric Fuel pums - fuel injection-p1010056.jpg  

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Old 06-08-2007, 07:49 PM
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Originally Posted by monstaaa View Post
weldon....................... period.

use there regulator as well.

and cool the fuel before AND after too,,,,

and RAMCO's filter is also great.
Nice set -up Monstaaa, what boat to ya have?

Jon
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Old 06-08-2007, 10:35 PM
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its a 42 poker run fountain with 1250 quad rotors. its not mine. it belongs to a friend/ client. he and i run this boat together.
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