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Hey guys,
When i had my EJ conversion i was advised to install a pre-pump, swirl pot and a VL turbo (or equivilent) fuel pump. That is all installed in the car currently and i certainly don't have any problems with fuel delivery to the EJ. What i wasn't happy with were two lines running under the car, as i was told they wouldn't fit were the existing fuel lines already run. I am fairly sure now that's not true, and it was done becaue they were extremely busy and my car was taking up too much time/space in their workshop.

18 months later and i'm actually getting off my arse to have a look at those two lines. Closer inspection reveals that one is the wiring for both the efi pump and the pre-pump. Pretty sure this will be easy to redirect through the car body and out of harms way were it is now. what i can't work out is what the other fuel line is for. I have traced all the other hoses at the surge tank and accounted for inlet from the pre-pump/fuel tank, return line to fuel tank, outlet to the EFI pump. So i'm guessing that this other line is a return directly from the injector rail to the swirl pot. Am i correct?

If it is a injector rail to swirl pot return line is there anything stopping me from switching this to the old carby return line to the fuel tank?

I am also considering fitting an EFI fuel tank. If i did could i run the efi pump directly from the in-tank feed and do away with the swirl pot setup completely?

Cheers,
Rhys

Answering some of my own questions...

The other other fuel line running under the car goes directly from the efi pump to the injector rails. Definitely not a injector rail to swirl pot return line . I think the old fuel tank to carby line is now the return line from the injector rails to the fuel tank. None of the other old fuel system/lines are used, it's all disconnected in the engine bay.

I think i'll just remove the old lines and run the efi fuel line there instead.

Personally I think the go would have been to get all these bits out of an EFI L Series ie the fuel lines/tank/any breather tubes .

The Bosch pumps VL Turbos use are not really very exciting , enough to reliably feed a 153 Kw turbo 3L six in a very sedate state of tune .

My RX L Series runs one of those pumps and the reason why is they're affordable available and with simple wiring alterations goes straight in - to a factory fuel injected L sedan anyway .

I don't find the factory L sedan tank fuel surge prone but I don't throw my car around violently either .

Your call , cheers A .

Hint , troll the local you pull it wrecker for EFI L wagons .
Also chase the pump wiring up through the floor pan and grab the gromet .

Pretty much as Disco said - grap all the lines from an EFI subi and use them. The only difficulty I can see is that when I did mine I had the dash removed as well as the fan box, plus my interior, seats and all.

It will be a big effort, but well worth it knowing that you'd have to be doing something very wrong to puncture/squash the fuel lines! The tank swap isn't difficult but is a little fiddly.

Let me know if you need any help with it

Cheers

Bennie