Second Fuel Tank

[PaulosECR33]

Hi all

Have just converted my car to E85 and have began tuning it. It is great but does use a bit more fuel.

due to the lack of e85 at servos at the moment i am going to install a fuel cell in the boot as a sub tank so i dont have to carry jerry cans around on long drives and cruises. This is how i am going to hook it all up.

-Obviously the fuel cell in the boot

-Carter (lift) pump being gravity fed from base of the tank, pump will have a switch in the dash and when on will deliver fuel to the main tank, -The car already has a surge tank external pump setup and this will pretty much stay the same.

-Fuel sub tank will be spliced into the Return line from the surge to main tank and will have a check valve on both,

I just want a second opinion on the way the sub tank feeds the main (will only be done when the motor is off.)

I have drawn up a diagram of how i will set it up

i know it will take a while to transfer but i want to use existing lines and they are all 3/8 so i will just have to deal with it

if anyone has done this another way it would be good to see how

Cheers.

Edited April 6, 2013 by PaulosECR33

[Piggaz]

For all that effort why don't you just flex fuel the car. Tanks, lines, pumps. Yuck!

[KiwiRS4T]

Put the extra fuel cell on top of the tank and you just need a line to gravity feed it into the main tank when it is empty enough - a mechanical tap would do or a solenoid if you want to do it on the run.

[Risking]

Flex fuel, end of story.

Your plan for filling will work but its a hassle having tanks in the boot and extra pumps etc.

Also make sure the lift pump you buy is alcohol friendly. They don't like sitting with E85 in them for long periods

[Joshbigt62r]

As piggaz and risking said. Flex fuel all the way. Ugly tank pumps lines ect taking all that room up in the boot. Just a major hassle. Get a flex fuel tune with the flex sensor and all that and you'll never look back mate.