fuel tank

[7/11=12]

hey guys anyone built there own fuel tank ??
iam building one for my Vw T4 van that i converted to run on veg oil 2 years ago,,iam fitting the tank slap bang between the rear wheel arches inside the van
just wanting to see how you have done filler necks & sender units / what not
ive managed to get hold of 2 flogas tanks / calor gas style there not silly heavy & serve as a good base to build a tank from,,ive worked it out by weighing & when full will weigh about 11st so its not silly heavy & thats about 80 lts of oil,,,i would like to some how do a big filler cap/neck & deffo would like the cap to seal & have a breather going through the van floor,& a sort of anti neck surge
pics / advice would be great,,reason for the vent is you do get abit of derv mix when purging the system & can smell it sometimes in the van due to the tank iam using now as a filler cap with built in breather thanks Rick

 

[Cris B]

Davenport built an aluminium fuel tank for his 106. Take a look in the projects section.

 

[hotrodder]

If you search the forum for 'fuel tank' you'll find several threads and pics on the subject. Most if not all are ally tanks but the same sort of caps are available with a steel neck for example... http://www.speedflowshop.co.uk/filler-necks---weld-on-167-c.asp Most of the kit car type mail order places also offer various styles of cap to fit a threaded flange/collar... https://www.europaspares.com/117/FUEL_CAPS_and_HOSE/FLANGES_COLLARS___FUNNELS.html

A breather is necessary to prevent the tank pulling a vacuum regardless. Speedflow (amongst others) offer a proper 2 way breather/shut off valve if you don't fancy an open breather or cannabilising an evaporative system from a modern car/van. It's usual to have another larger diameter breather for filling purposes. With a remote filler just a 1/2" or 3/4" tube that goes from the tank to the filler neck. If the cap is mounted directly to the tank then i usually pass the filler neck through the tank skin and just knock a hole in the side of it just inboard of the tank skin

Sender units (for petrol cars at least) typically use a 5 bolt fixing on a 54mm PCD. Obviously if you want the gauge to be accurate the sender needs to be compatable with it and sized/sited in the tank properly. If the tank will be sited in the van you'll want lots of baffles or when partially full you'll hear the fuel sloshing around. Petrol and carbs aside the outlet needs to be baffled too

 

[octo0072000]

tanks

these any good for you i used one for derv veg in main tank

http://www.ebay.co.uk/itm/FUEL-TANK...at_Engines_EngineParts_SM&hash=item45fb1707e4

 

[piman]

Hello 7/11,

you also should consider baffles inside the tank.

Alec