Surge Tank Setup

[tones]

I'm Setting up a fuel system with a surge tank and external pumps on my 32. I am just after advice on where to run the return lines. That is do you run the return from the fuel rail to the surge tank and a return from the surge tank to the fuel tank? Any advice on how these setups work is appreciated, thanks.

[J'z-R33]

Return line goes back into the surge tank. Then run another line from the surge tank into your normal fuel tank..

[Dobz]

I am just after advice on where to run the return lines. That is do you run the return from the fuel rail to the surge tank and a return from the surge tank to the fuel tank?

yes

[tones]

Thanks guys, thought so, just wanted to be sure. Does anyone know where I can get foam baffle that's e85 resistant?

[DVS JEZ]

has anyone tried running the return line into the tank ? would think this would help cool the fuel a little rather than constantly pumping hot fuel to the engine

[JonnoHR31]

your feed pump would have to flow more than the main pump. which means you'd still need a return from the surge tank so it doesnt pressurise. apparently creates issues with pressure in the main tank too. run the rail return into the surge tank then return from surge into main tank, proven setup

[tones]

I thought dvs32r had a fair point, but if it can cause other pressure issues probably best to stay with tried and tested method.