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electric fuel pump at the tank

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The question is, how well can it work to use an electric fuel pump at the tank (from a 318i, or something) for a down-draft carb set-up? The fuel lines are swapped (steel line to the engine and plastic for return). The car is a '74 carbureted and somewhat disassembled under the hood. It's not my car although it used to be. I had worked on it a little bit and there were still gas leak issues with dual weber carbs. I had used a Carter fuel pressure regulator set at 5 psi. I'm trying to help the current owner, long-distance (I have not seen the car in several years). He is in the process of assembling a fuel hookup/carburetor install from parts. He does not have prior experience in particular with BMW 2002.

Are we on the right track? Does this sound doable and desirable--especially the electric fuel pump? Or is it recommended that we revert back to original? If so, what exact steps are recommended?

I hope I am making sense. Your patience is appreciated.

Thanks.

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Unless there is a pressure regulator with return flow to the tank, the pressure will be quite high. If no return flow the pump will probably burn out, it is a positive displacement pump that should not be dead headed.

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You are asking about a pump "at the tank". Do you mean "in the tank"?

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you only need 2.1 psi fuel pressure - fix that some how

but best is you install a BMW mechanical M10 fuel pump

as it was from the beginning

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If you use an early E30 in tank pump (or pre-pump in the 2 pump system for EFI) your plan will work. However, if you use the later in tank pump (single pump system for EFI) you will have too much pressure.

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........i think either of those injection pumps is too much for

his Weber 32/36 carburetor

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