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Commodore VN to VS ute fuel tank insides

Discussion in 'General Discussion' started by Gus The Snail, Aug 1, 2018.

  1. Gus The Snail

    Gus The Snail Born to be dizlegzic

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    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.
    Tank rubber hose and joiner.jpg 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.
    fuel tank extension.jpg alloy tank.jpg Stock swirl pot.jpg Ute tank crack.jpg
     
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  2. Gus The Snail

    Gus The Snail Born to be dizlegzic

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    Fitted and filled. No fuel smell in cab anymore!! Now to see what Km i get from a tank of fuel tank fitted.jpg
     
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  3. losh1971

    losh1971 Well-Known Member

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    What's the battery in the tank cavity used for?
     
  4. Lex

    Lex Active Member

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    Thats a recipe for disaster!
     
  5. losh1971

    losh1971 Well-Known Member

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    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
     
  6. stick3

    stick3 Active Member

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  7. losh1971

    losh1971 Well-Known Member

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

    Gus The Snail Born to be dizlegzic

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

    Gus The Snail Born to be dizlegzic

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    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
     
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  10. Lex

    Lex Active Member

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    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.
     
  11. Gus The Snail

    Gus The Snail Born to be dizlegzic

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    No more petrol fumes. that was the whole point of me repairing the tank. You're more likely to get a spark under the bonnet than where that battery is located.
     
  12. EYY

    EYY Well-Known Member

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    Ever seen how flammable the stuff is that’s inside a vented lead acid battery?

    As long as there’s decent airflow there it’ll be fine.
     
  13. Gus The Snail

    Gus The Snail Born to be dizlegzic

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    Update , only 650km from a tank.. im disappointed.. On the otherhand , ive just fitted new DFI, coil packs, plug leads and spark plugs. Hopefully my intermittant miss is now gone, and hopefully the economy picks up!
     
  14. losh1971

    losh1971 Well-Known Member

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    650 is pretty good. I get about 350 from a tank. Although i have a small tank.
     

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