EFI FUEL SUMP PUMP SYSTEM ?

Fuel and Air Systems

  1. dodge71demon

    dodge71demon Well-Known Member

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    Any body using the EFI fuel sump pump system? Good - bad - ugly I traded for a new Edelbrock 36032 and I'm thinking of using it with the Holey Sniper -- mild small block
     
  2. jbc426

    jbc426 Well-Known Member

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    I had to look up the part number for what you posted to see what it was. Looks like a surge tank system without the return. It is limited to 7 psi max pressure on the input side, so you are limited in which pump you can use to feed the fuel to it.

    If you already have a stock style low pressure fuel pump, the system is super easy to install and it looks like a great option for a mild EFI conversion set-up like you are planning. Best of luck.

    Be sure to run relays and an oil pressure cutoff with bypass, so you can prime the system if you want.
     
  3. Mopar73340

    Mopar73340 Well-Known Member

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    The biggest complaint seems to be heat. The unit will get hot with the electric fuel pump which the fuel needs to cool. There isn’t much fuel there to cool the pump Add engine bay heat and there are issues. Mount in the coolest place you can find. Also make sure it’s vented properly.
     
  4. AndyF

    AndyF Well-Known Member

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    Your best bet is to just put a pump in the factory gas tank. There are kits from Holley that drop right in. The regulator is internal to the tank so you don't need a return line. The surge tanks mounted in the engine compartment are a hassle. That was a concept that seemed like a good idea originally but once people started making drop in pump assemblies for older cars the surge tank approach hit a dead end.
     
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    • pishta

      pishta I know I'm right....

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      You already got it...It'll work fine. It's a retrofit design, not meant to replace a sumped tank. Before there were sumped tanks there were surge tanks which still have a place in autocross cars. Put it up where the battery went. plenty of fresh air up there.
       
    • jbc426

      jbc426 Well-Known Member

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      You can either sell this Edelbrock kit and go for an intank returnless set-up like AndyF recommends or feed this system with a stock mechanical fuel pump or low pressure electric pump.

      This Edelbrock external sump/surge tank system already has a returnless electric pump inside it, so it needs a second low pressure pump to feed gas into it. Most EFI pumps supply too much pressure for this sump/surge tank system without a regulator and a bypass.

      Surge tank systems are becoming even more developed and readily available to the aftermarket, especially in high powered modern EFI cars due to the high G-forces they can generate, which leaves even the best modern fuel tanks putting air in the fuel system under hard use.
       
    • abodyjoe

      abodyjoe Well-Known Member

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      • dodge71demon

        dodge71demon Well-Known Member

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        Thanks just wondering if it would be worth the effort now I'll probably get grief about this on a couple of issues one it's for my 72 C10 and second already have a Tanks universal EFI so I'm ready for the on slot BUT WAIT I do have another ? on the return line since it just dups back into the tank with no restriction is it necessary to use high pressure hose like I said give me a hard time I deserve it
         
      • myduster360

        myduster360 Well-Known Member

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        The Edelbrock sump work great with the stock mechanical pump or cheapo inline.

        Also the Holley "HOLLEY 255 LPH OE STYLE EFI FUEL TANK MODULES"
        PART# 12-319 fits the STOCK fuel tank and includes an integral Fuel pressure regulator and new sending unit. It Hydramat pickup sock eliminates pick up issues.


        12-319_01.jpg

        [​IMG]
         
      • jos51700

        jos51700 Well-Known Member

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        Any idea if the fuel level sender is worth a damn?

        My only issue with these is what to do if the pump poops out on a road trip.
         
      • myduster360

        myduster360 Well-Known Member

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        Isnt that always true for any fuel pump?

        In the case of the Holley and Edelbrock, most any parts store has a "stock" style replacement on shelf. It wouldn't be a "255lph" but it would get the car running and driving without much issue.

        The Holley comes with a good quality TI Automotive Walbro 255lph pump


        [​IMG]
         
        Last edited: Sep 15, 2020
      • myduster360

        myduster360 Well-Known Member

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        I haven't heard of any issues and the Sender appears to be modern OE style, which would be a few notches up from the old Mopar

        [​IMG]
         
      • jos51700

        jos51700 Well-Known Member

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        I was seriously considering trying to retrofit a ram pump into my tank, primarily for compatibility and availability reasons.

        But drop-in....that's very nice.
         
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