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914World.com _ 914World Garage _ In Tank Fuel Pump
Posted by: Mowog4 Oct 24 2022, 04:51 AM
I am looking for suggestions on how to vent a tank with an in-tank pump. Fuel smell, and fuel sloshing are an issue. Any suggestions
Posted by: GregAmy Oct 24 2022, 06:42 AM
Can you describe your goals? I do this in my 914 racer with a fuel cell.
Posted by: tygaboy Oct 24 2022, 06:56 AM
I'm running a Aeromotive Phantom in-tank pump in my LS car and I get a bit of fuel smell, too. I'm still developing the car and it runs an "open" vent line so I plan to route it to a charcoal filter. Maybe I'll reposition a stock one or give a go t making a custom one I can hide.
Posted by: Van B Oct 24 2022, 07:12 AM
You need a charcoal canister for fuel smell. That is still the go to solution. For sloshing you need either fuel tank foam or internal baffles.
Posted by: Mowog4 Oct 24 2022, 01:26 PM
I will add a charcoal canister, the sloshing is fuel running out of the vent tube when it is full. I’ll have to come up with a way to vent the tank higher in the air.
Posted by: Mowog4 Oct 24 2022, 01:50 PM
I will try to modify an expansion tank to work, see if that works
Posted by: FL000 Oct 24 2022, 07:47 PM
This is my setup. Evap canister didn’t fit but vent goes to charcoal canister then back to air intake.
Fuel slosh smell is still an issue but only when filled to the brim and on the turns.
Posted by: Mowog4 Oct 24 2022, 09:10 PM
This is my setup. Evap canister didn’t fit but vent goes to charcoal canister then back to air intake.
Fuel slosh smell is still an issue but only when filled to the brim and on the turns.
That looks great, very clean. I’ll need not to fill to the top.
Posted by: falcor75 Oct 24 2022, 11:06 PM
There are two way springloaded vents that only vent when there is an inside/outside pressure difference. 
I am using this for my seven replica and I have zero issues with fuel smell in the garage.
Posted by: Mowog4 Oct 25 2022, 08:08 AM
There are two way springloaded vents that only vent when there is an inside/outside pressure difference.
I am using this for my seven replica and I have zero issues with fuel smell in the garage.
Interesting, where did you source it?
Posted by: andys Oct 25 2022, 11:39 AM
This is my setup. Evap canister didn’t fit but vent goes to charcoal canister then back to air intake.
Fuel slosh smell is still an issue but only when filled to the brim and on the turns.
That looks great, very clean. I’ll need not to fill to the top.
I did a FiTech pump, stock expansion tank, and charcoal cannister. No fuel smell or slosh.
Andys
Posted by: Mowog4 Oct 25 2022, 04:41 PM
This is my setup. Evap canister didn’t fit but vent goes to charcoal canister then back to air intake.
Fuel slosh smell is still an issue but only when filled to the brim and on the turns.
That looks great, very clean. I’ll need not to fill to the top.
I did a FiTech pump, stock expansion tank, and charcoal cannister. No fuel smell or slosh.
Andys
Andy
Looks great, any more pictures?
Thanks Ed
Posted by: falcor75 Oct 26 2022, 12:55 AM
There are two way springloaded vents that only vent when there is an inside/outside pressure difference.
I am using this for my seven replica and I have zero issues with fuel smell in the garage.
Interesting, where did you source it?
I bought it locally here in Sweden in a store that specialises in industrial parts (llike McMaster-Carr) but you could make one yourself from a threaded plug, set screws, springs and ball bearings.
Here is a parts link.
https://www.wiberger.se/produkt/m_tsvv
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