81 step side dual tank help

[eskimomann209]

Okay, I’m starting to understand the process. Is it at all possible to install the walboro 255 pump into my stock tank and sending unit eliminating the need to purchase two new tanks and sending units?

You need the 87+ tank because it has the baffles built in for a fuel pump.

What about retaining the standard tanks, using an electric pump per tank, to supply fuel to a surge tank set up, which has the high pressure pump feeding the EFI rail.

That works too if he wants to maintain as much factory parts as possible. But I think the 87 tanks 255 pumps and the Delphi selector all look more natural and cleaner.

 

[75gmck25]

There is another option that does not require new tanks or multiple electric fuel pumps. You can install an Edelbrock 36032 surge tank or Fitch Fuel Command 2 center in the engine compartment between your stock mechanical pump and the new EFI.

With an external surge tank the fuel feed into the tank is stock, so you leave your stock tanks, switch and mechanical pump in place. The surge tank holds about a quart of fuel, and has its own high pressure pump and pressure regulator to pull in that fuel and jack the pressure up to the psi needed for EFI. The tank also serves as a reservoir to keep the high pressure pump from running dry.

Integrated surge tanks look expensive until you realize they also include the high pressure pump and fuel pressure regulator. They also let you leave the stock dual tank setup in place. Some also do not require a return line to the vehicle fuel tank, which simplifies installation. They are very frequently used in track racing applications to prevent fuel starvation with stock EFI systems (like racing a Subaru WRX).

Bruce

 

[Trevor Pool]

There is another option that does not require new tanks or multiple electric fuel pumps. You can install an Edelbrock 36032 surge tank or Fitch Fuel Command 2 center in the engine compartment between your stock mechanical pump and the new EFI.

With an external surge tank the fuel feed into the tank is stock, so you leave your stock tanks, switch and mechanical pump in place. The surge tank holds about a quart of fuel, and has its own high pressure pump and pressure regulator to pull in that fuel and jack the pressure up to the psi needed for EFI. The tank also serves as a reservoir to keep the high pressure pump from running dry.

Integrated surge tanks look expensive until you realize they also include the high pressure pump and fuel pressure regulator. They also let you leave the stock dual tank setup in place. Some also do not require a return line to the vehicle fuel tank, which simplifies installation. They are very frequently used in track racing applications to prevent fuel starvation with stock EFI systems (like racing a Subaru WRX).

Bruce

Is this what you are talking about ? Of so this seems like the easiest and quickest way to compete the fuel system. https://www.edelbrock.com/adjustable-universal-efi-sump-fuel-kit-67gph-35-90-psi-36031.html

 

[Trevor Pool]

There is another option that does not require new tanks or multiple electric fuel pumps. You can install an Edelbrock 36032 surge tank or Fitch Fuel Command 2 center in the engine compartment between your stock mechanical pump and the new EFI.

With an external surge tank the fuel feed into the tank is stock, so you leave your stock tanks, switch and mechanical pump in place. The surge tank holds about a quart of fuel, and has its own high pressure pump and pressure regulator to pull in that fuel and jack the pressure up to the psi needed for EFI. The tank also serves as a reservoir to keep the high pressure pump from running dry.

Integrated surge tanks look expensive until you realize they also include the high pressure pump and fuel pressure regulator. They also let you leave the stock dual tank setup in place. Some also do not require a return line to the vehicle fuel tank, which simplifies installation. They are very frequently used in track racing applications to prevent fuel starvation with stock EFI systems (like racing a Subaru WRX).

Bruce

With that set up, I’d need to instal two electric inline(one for each tank) used for any carbureted engine. And then have the surge tank mounted after the fuel pumps and factory switch inside the engine compartment. Feeding the efi ?

 

[eskimomann209]

With that set up, I’d need to instal two electric inline(one for each tank) used for any carbureted engine. And then have the surge tank mounted after the fuel pumps and factory switch inside the engine compartment. Feeding the efi ?

If you have a mechanical pump. You make that pump into this surge tank instead of the carburetor or TB.
If you have inline pumps. You make this pump in after the selector valve. The house that usually goes to the TB move it to pump into this.

 

[Zoomalot]

I used the KISS method that worked for a RamJet.
The "87" stock tanks and selector valves and lines themselves had all but disintegrated due to what I believe was "Blended Fuel"

You must be registered for see images attach