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Spare tire fuel tank?

Discussion in '3rd Gen. Tacomas (2016+)' started by MJTH, Sep 14, 2021.

  1. Sep 14, 2021 at 5:31 PM
    #21
    stevesnj

    stevesnj Well-Known Member

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  2. Sep 14, 2021 at 5:37 PM
    #22
    C-Rok275

    C-Rok275 Well-Known Member

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    Damn reading comprehension
     
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  3. Sep 14, 2021 at 5:41 PM
    #23
    MJTH

    MJTH [OP] PretenderLander

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    I think tank is also fine. (I may not understand the distinction between cell and tank)
     
  4. Sep 14, 2021 at 5:44 PM
    #24
    MJTH

    MJTH [OP] PretenderLander

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  5. Sep 14, 2021 at 5:44 PM
    #25
    stevesnj

    stevesnj Well-Known Member

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    A cell is usually plastic, with foam cell inserts used for racing typically, a tank is just that.
     
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  6. Sep 14, 2021 at 5:50 PM
    #26
    MJTH

    MJTH [OP] PretenderLander

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    1000 mile range sounds wonderful.
     
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  7. Sep 14, 2021 at 5:51 PM
    #27
    stevesnj

    stevesnj Well-Known Member

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    Well for a Landcruiser it's just 650 miles. lol
     
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  8. Sep 14, 2021 at 6:01 PM
    #28
    Hairless_Ape

    Hairless_Ape Well-Known Member

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    No hard. Just put a check valve between your pump and the the hole you tap into the filler neck. No evap leak.
     
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  9. Sep 14, 2021 at 6:32 PM
    #29
    Stocklocker

    Stocklocker Well-Known Member

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    Couldn’t you just fill your spare tire with gas?
     
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  10. Sep 14, 2021 at 7:05 PM
    #30
    oconnor

    oconnor Where am I?

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  11. Sep 14, 2021 at 7:35 PM
    #31
    Travlr

    Travlr Doomsday Daily Driver

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    No idea how to help you but I like the idea. A spare tire sized tank full of gas (ten gallons?) should weigh, what, 75 pounds? The fuel 63 pounds and the tank would be light. An electric pump to push the fuel into the existing tank and a fill hose. Nice idea. To bad you can't use the space between the inner and outer bed.
     
  12. Sep 15, 2021 at 4:12 AM
    #32
    MJTH

    MJTH [OP] PretenderLander

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    Now this is the hard hitting, no nonsense advice I was looking for
     
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  13. Sep 15, 2021 at 6:08 AM
    #33
    FL_TRD Sport

    FL_TRD Sport Very Well Known in His Own Home

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  14. Sep 15, 2021 at 7:07 AM
    #34
    Stocklocker

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    :hattip:
     
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  15. Sep 15, 2021 at 7:21 AM
    #35
    TacooSaucee

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  16. Sep 16, 2021 at 7:13 AM
    #36
    dpele

    dpele Eh.

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  17. Sep 16, 2021 at 10:48 AM
    #37
    Dawelda

    Dawelda Well-Known Member

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    :pccoffee:back in the day...
    I had an '83 Chevy truck and later, I had a '74 Bronco and both had auxiliary tanks and each worked the same way. When the gauge read "empty" I would poke a button and turn a valve under the seat. Then, the same OEM fuel gauge would read full and I would go about my business. It was awesome!

    I've wanted one for this truck since the first time I saw how limited my range was. I would love to get this done and might even work with someone to put a "kit" together for owners or even a parts list and instructions for others? I just need to get out of the temporary apartment and into a house so I can get my shop set back up. It will be next spring! :frusty: Make some plans in the mean time? :notsure:

    I'm a certified TIG welder and machinist and can make almost anything I can't buy/afford. I can fab the tanks, mounts, and parts, etc. But, I don't know shit about cars in general. I'd have done it already but don't know how to make it work seamlessly?

    1. How do you fill it? Both previous trucks had separate fillers. Is this the best option? Where do you put it that doesn't fuck up the body?
    2. If you purchase a sensor, how do you connect to OEM gauge?
    3. In tank pump? External? Power for that? Regulated pressure?
    4. How to you plumb the new source into existing fuel line/system? On/off valve? Switching?
    5. Isn't the vent part of emissions, too?

    So many questions for someone ignorant in the technical specifics of how cars actually work. Both previous trucks had the aux tanks on the side, main in the rear. I haven't seen the under side of my truck in some time, can we place it to help with the balance issue? Central or right side? Or, can it only go in place of spare?

    I know someone here is knowledgeable enough to integrate this without fucking up the OEM systems. If all you need is fab help, talk to me if you like. Post here or message me? Seriously, I hate the short range shit, let's fix it!:curls:
     
  18. Sep 16, 2021 at 11:00 AM
    #38
    Seth2197

    Seth2197 Well-Known Member

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    I'm no expert but I do have some thoughts on getting this working.

    1. I think putting the extra filler in the bed could be a good solution. Inside of one of the little storage cubbies could be a good place to keep it hidden away.
    2/3: They sell the whole fuel pump assembly (77020-04090). It has the fuel pump and gauge already. Maybe relays could be used to turn one assembly off and turn the other on. I just can't think of a good way to do it. I wish there were relays that went from circuit 1 to 2 instead of being either off or on.

    I think making it legal would be the hardest part. I don't know a ton about the law but I've heard it's really tough on auxiliary fuel tanks
     
  19. Sep 16, 2021 at 11:03 AM
    #39
    Dawelda

    Dawelda Well-Known Member

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    Filler in bed is likely a good idea as long as static charge while filling isn't an issue?
    Integration into the OEM system is a BIG issue.
    Didn't realize there was a legal component? Not sure that I care much.
     
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  20. Sep 16, 2021 at 11:05 AM
    #40
    RX1cobra

    RX1cobra Well-Known Member

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    I think the easiest method would be to find a tank that will fit in there. It should allow you to add a fuel pump and gauge for the spare tank easily. Run a switch to the pump and have it drain into your main tank. A one way valve at the stock tank should hopefully keep evap codes from popping up. You can plumb into the stock tank like this guy did.

    Fairly low risk. If you mess up worst case you need to buy a new fuel pump assembly and not a new stock tank.

    https://www.tacomaworld.com/threads...-for-accessories-utility-motors.718947/page-4

    Found some 2nd gen threads too:

    https://www.tacomaworld.com/threads...spare-tire-area-parts-and-build-ideas.483271/

    https://www.tacomaworld.com/threads/auxiliary-17-gallon-fuel-tank-idea.477475/
     
    MJTH [OP] likes this.

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