Aero fuel filler “Fuel Spill” hose

[sltous]

I have fitted an aero fuel filler in place of my standard fuel filler but the short section of fuel spill hose has cracked and is very stiff, enough to make it difficult to position the fuel filler.  Reviewing the Newton Aero 300 documentation https://www.newton-equipment.com/pdfs/aero-300/ob-za-051-055-048-056-tech-sheet.pdf this looks to be a 16mm diameter pipe, should I pick up some 5/8" ID regular rubber hose or is there something special I need to fit?  I am not really worried about structural integrity of the hose as right now the section is about six inches long and about four of those inches have either tank fitting or fuel filler inside of them, probably the more flexible the better from my perspective.

[MV8]

It needs to be fuel hose and low pressure hose is fine and more flexible. That is a common size for marine fuel line (J1527).

[sltous]

I found a section of fuel hose at one of the big chain auto parts stores.  The newer hose is not cracked and is more flexible so it turned out fine.  Would something like the Dorman cooling bypass plugs have been acceptable if I was willing to lose the fuel spill tube?  Not sure if the rubber they are made from breaks down in gas vapors

[MV8]

A plug or cap made for coolant won't last long when exposed to today's fuel. Fuel rated hose has a special liner; sometimes just thin-walled nylon tube. Plugging/capping is a bad idea unless the tank is not equipped with a large vent pipe. This vent is not to be confused with the normal tank vent that either dumps to atmosphere on very early road cars or race cars or is stored in a canister containing charcoal pellets. The canister vapor's restricted orifice release to the intake manifold is controlled by a closed when cold coolant thermo-switch on carbureted vehicles or computer via vacuum solenoid on efi vehicles.

The 5/8 pipe is a tank vent for rapid filling without spitting out of the filler neck and down the side of the car. It provides the displaced tank air a path around the incoming fuel. Oems typically have a large, 3 inch or so vent hose within a 1.25 or so filler hose or a side tank vent hose like your new filler.

[sltous]

8 hours ago, MV8 said:

A plug or cap made for coolant won't last long when exposed to today's fuel. Fuel rated hose has a special liner; sometimes just thin-walled nylon tube. Plugging/capping is a bad idea unless the tank is not equipped with a large vent pipe. This vent is not to be confused with the normal tank vent that either dumps to atmosphere on very early road cars or race cars or is stored in a canister containing charcoal pellets. The canister vapor's restricted orifice release to the intake manifold is controlled by a closed when cold coolant thermo-switch on carbureted vehicles or computer via vacuum solenoid on efi vehicles.

 

The 5/8 pipe is a tank vent for rapid filling without spitting out of the filler neck and down the side of the car. It provides the displaced tank air a path around the incoming fuel. Oems typically have a large, 3 inch or so vent hose within a 1.25 or so filler hose or a side tank vent hose like your new filler.

 

Thanks for confirming.  The section of fuel hose I bought seems to be doing fine