Commodore VN to VS ute fuel tank insides

[Gus The Snail]

So i built a long range tank from alloy ( approx 85lt ) , since the standard tank had a fuel smell i couldn't track down ( changed all fuel lines/breathers ETC ) , so i decided to cut the stock metal tank up and make it into a long range tank as well. Roughly 26cm longer , which equates to, again, roughly 28 litres. I took some photos of the insides, so you can see exactly what is in them, and what can "fail" .
Pics are in no specified order.

What i found when slicing the tank was its got 2 breather pods, these are connected by a short rubber hose. This hose has disintegrated, So it was replaced with a new piece ( approx 4cm long, circled in pink) and the main length i joined with a piece approx 20cm long , and welded a support to the top side of the tank. Also found my fuel smell , the main breather/fuel return pipe had cracked its solder to the tank on the inside , i have put a support in to minimise the expansion/contraction that would have made the solder break in the first place and resoldered the pipe to the top of the tank. I also fixed both pipes externally as they were cracked and missing solder ( see attached pic ). Tonight i have just finished welding the extension pieces onto the tank. TIG welded one side and mig welded the other. I'll pressure test it and see which one has sealed the best. Im guessing i'll have the odd pin hole as it was stitch welded to minimise heat distortion.

 

[Gus The Snail]

Fitted and filled. No fuel smell in cab anymore!! Now to see what Km i get from a tank of fuel

 

[losh1971]

What's the battery in the tank cavity used for?

 

[Lex]

What's the battery in the tank cavity used for?

Thats a recipe for disaster!

 

[losh1971]

Another question, what is the black thing inside the tank?? My VR ute tank only had the pump and sender assembly, inside when I pulled it out, nothing else inside

 

[stick3]

good job mate and losh the black thing is the swirl pot here a thread you can see it better
https://forums.justcommodores.com.a...p-assembly-and-swirl-pot.135749/#post-1534750

 

[losh1971]

That would be why my engine stutters for a few seconds when the tank is near empty when I'm pulling up.

 

[Gus The Snail]

Thats a recipe for disaster!

How so? the tank is bolted down and so is the battery. Ive had that battery in there for around 9 years now.

 

[Gus The Snail]

What's the battery in the tank cavity used for?

Just extra storage for when i go camping or working somewhere so i can have the radio on all day and still start the car when its tools down

 

[Lex]

How so? the tank is bolted down and so is the battery. Ive had that battery in there for around 9 years now.

When Murphy shows up, some how you get a spark when there is petrol fumes & bang, no more ute, or at least a fire.
You know Murphy, something just about guaranteed to be ok, & Murphy shows up.
Shxt happens. I try to avoid it.
Sorry no lecture.