Has anybody installed a Gen III gas tank in a Gen II Prius?

Discussion in 'Gen 2 Prius Technical Discussion' started by 93dawg, Oct 4, 2014.

  1. 93dawg

    93dawg Junior Member

    Joined:
    May 21, 2007
    66
    20
    0
    Location:
    SW WASHINGTON the real Washington (Bought 08/15/14
    Vehicle:
    2006 Prius
    Model:
    N/A
    As the title says Has anybody installed a Gen III gas tank in a Gen II Prius?
     
  2. Mike500

    Mike500 Senior Member

    Joined:
    Mar 1, 2012
    2,593
    758
    0
    Vehicle:
    2012 Prius v wagon
    Model:
    Two
    If you don't like the bladder in the Gen II, you can try to get a tank from Canada. I believe that the Gen II has tank from Canada doesn't have the bladder.

    I'd be surprised, if the Gen III tank fit in the Gen II.
     
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,181
    6,285
    0
    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    I believe that all North American G2 Prius have the same emissions control system including the bladder-equipped fuel tank. So the OP would have to go to another continent to find a fuel tank without bladder. The check engine light would remain on at all times since this fuel tank would not have some of the emissions components (such as the vapor sensor in the space between the bladder and the tank's rigid top) that the engine ECU expects to receive signals from.

    A similar issue would result if the OP managed to get a G3 fuel tank to fit into the available G2 space.
     
  4. 93dawg

    93dawg Junior Member

    Joined:
    May 21, 2007
    66
    20
    0
    Location:
    SW WASHINGTON the real Washington (Bought 08/15/14
    Vehicle:
    2006 Prius
    Model:
    N/A
    This is starting to sound complicated...haha... Maybe the circuitry could be fooled so that the engine light doesn't come on. There has to be a way to do this if somebody sets their mind to it. It is hard to imagine that somebody hasn't done this already when these bladder tanks are such a headache.

    What is the name of the guy who has a hybrid shop in the midwest who is a member here? Maybe the shop is somewhere around Chicago area. Almost looks like he has a Prius wrecking yard. He seems like the right sort of a person to try this modification.

    Yeah put a 15 gallon fuel cell in the place of the tank...
     
    #5 93dawg, Oct 4, 2014
    Last edited: Oct 4, 2014
  5. JimboPalmer

    JimboPalmer Tsar of all the Rushers

    Joined:
    Apr 14, 2009
    12,327
    6,716
    2
    Location:
    Greenwood MS USA
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    In addition to the tank was my thought, but then I never had any problem with the bladder except driving too far.
     
  6. 93dawg

    93dawg Junior Member

    Joined:
    May 21, 2007
    66
    20
    0
    Location:
    SW WASHINGTON the real Washington (Bought 08/15/14
    Vehicle:
    2006 Prius
    Model:
    N/A
    By driving too far, do you mean like running out of gas???...haha... Since I am absolutely new to the Prius I am wondering how one knows when the tank is really full? If a person wants to go a long ways without stopping they might like to have a full tank.

    I found the shop I was looking for. It is AutoBeYours.com. Owner Steve Wooddruff of Scottsburg, IN. This looks like his kind of project...haha...
     
  7. JimboPalmer

    JimboPalmer Tsar of all the Rushers

    Joined:
    Apr 14, 2009
    12,327
    6,716
    2
    Location:
    Greenwood MS USA
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    Yes, the North American Gen 2 tank has a variable size, based loosely on outside temperatures. In the 3 years I owned mine I found once when it ran out of gas in 7 miles after the last pip started blinking. On other days I went over 30 miles. You just never can tell. I filled slowly and took off the cap first, so when the pump stopped, it was full.

    In Mississippi in the summer that was over 10 gallons, (11 once) but in what passes for winter here, sometimes under 8 gallons.
     
  8. 93dawg

    93dawg Junior Member

    Joined:
    May 21, 2007
    66
    20
    0
    Location:
    SW WASHINGTON the real Washington (Bought 08/15/14
    Vehicle:
    2006 Prius
    Model:
    N/A
    Thanks for the info Jimbo. And the same goes for others who have responded. I appreciate any help I can get learning things I need to know about my new to me 2006 Prius.
     
  9. 93dawg

    93dawg Junior Member

    Joined:
    May 21, 2007
    66
    20
    0
    Location:
    SW WASHINGTON the real Washington (Bought 08/15/14
    Vehicle:
    2006 Prius
    Model:
    N/A
    I can't believe somebody hasn't tried to do this already. Where are all the tech wizards???

    To me this is one of the worst things about this car. It's just plain crapola...haha...
     
  10. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    94,713
    42,945
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    i had two gen II's and never had a problem. the gauge was dead on. not sure why(n) one thing you might consider is multiplying your average mpg's by 10 and refilling.
     
  11. 93dawg

    93dawg Junior Member

    Joined:
    May 21, 2007
    66
    20
    0
    Location:
    SW WASHINGTON the real Washington (Bought 08/15/14
    Vehicle:
    2006 Prius
    Model:
    N/A
    Bisco I don't feel like the gauge is that much of a problem. But filling the tank is baloney as far as I am concerned.

    I am thinking about buying a tank out of a wrecked Gen II Prius and see if it can be modified taking out the bladder. That bladder is about the dumbest thing Toyota ever did as far as I am concerned. I mean how dumb can they get???

    When I want to fill my gas tank I want it full each time without fiddling around with it. I want to be able to fill it just like any normal car.

    I am slow to anger but I get mad just thinking about this...haha...
     
  12. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

    Joined:
    Feb 14, 2010
    5,982
    3,781
    0
    Location:
    Rocky Mountains
    Vehicle:
    2006 Prius
    Model:
    Three
    It does fill without fiddling. It is just a variable size. Seriously, it is new to you so just live with it for a bit and realize how much of a non-issue it is. The reason nobody has done it, is because nobody has a need to. The bladder works fine.

    If you are constantly driving down to blinking pips, you have some sort of mind-set problem. When the car says that it is thirsty, fill it up. Don't wait for it to scream at you.
     
    xpcman likes this.
  13. 93dawg

    93dawg Junior Member

    Joined:
    May 21, 2007
    66
    20
    0
    Location:
    SW WASHINGTON the real Washington (Bought 08/15/14
    Vehicle:
    2006 Prius
    Model:
    N/A
    2k1Toaster First thanks for your suggestions. Second of all I have never driven far enough without filling to see the blinking pip and I don''t intend to.

    Sorry to disagree with you but the Prius Gen II gas tank does not fill "FULL" without fiddling with it. I agree with you that it fills to the whim of the bladder which is variable...haha... It is not a non-issue to me although if I can't do something about it I may be forced to make it a non-issue. But I haven't given up yet...haha...

    I love my 2006 Prius and have wanted a Prius for a while, for sure ever since renting one for a week to try out about a year or two ago, which by the way I could fill the gas tank all the way "FULL" without fiddling with it. The only thing I don't love about my Prius is the bladder gas tank...haha...

    Can anyone tell me if this car has an in the gas tank fuel pump???

    Jim
    ===
     
  14. northwichita

    Joined:
    Sep 24, 2006
    481
    100
    29
    Location:
    Wichita KS
    Vehicle:
    2004 Prius
    See this link , and yes it has an in-tank fuel pump.
    the gas bladder: exposed! | PriusChat

    I don't think the metal housing around the fuel bladder would hold gas by itself, perhaps a related car model's tank could be improvised, if you can deal with the CEL.
     
  15. JimboPalmer

    JimboPalmer Tsar of all the Rushers

    Joined:
    Apr 14, 2009
    12,327
    6,716
    2
    Location:
    Greenwood MS USA
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    Non North American Gen 2 Prius had a different tank with no bladder. Aside from not meeting US emissions laws, If you replaced enough of the car with a non North American donor, it should work.

    WHY you would do this is not clear, but technically you could, so long as you did not drive it on public highways in the US.
     
  16. 69shovlhed

    69shovlhed Surly tree hugger

    Joined:
    May 13, 2012
    2,159
    727
    0
    Location:
    sterling, VA
    Vehicle:
    2006 Prius
    Model:
    II
    why you would do it is because the bladder was a bad idea, and in some states there is no emissions inspection on the prius, so if you did go through all the trouble to replace the bladder tank with a better EU tank, no one would know or be able to stop you.
    and the relatively small amount of emissions leaking from a prius tank is nothing compared to all the other pollution going on all around us 24/7.
     
  17. 93dawg

    93dawg Junior Member

    Joined:
    May 21, 2007
    66
    20
    0
    Location:
    SW WASHINGTON the real Washington (Bought 08/15/14
    Vehicle:
    2006 Prius
    Model:
    N/A
    Interesting stuff you last three posters said. I live where we have no inspections so maybe I should just see if I can buy a tank somewhere that don't have the bladder in it...haha...
     
    #18 93dawg, Oct 15, 2014
    Last edited: Oct 15, 2014
  18. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

    Joined:
    Feb 14, 2010
    5,982
    3,781
    0
    Location:
    Rocky Mountains
    Vehicle:
    2006 Prius
    Model:
    Three
    I didn't realize you just recently bought this Prius. It could be "folded" or have some other minor ailment causing you to not get a good fill. Mine has been spot on since I expanded it 3 years ago. Now everytime I fill up, I get 10-ish gallons in there right around the blinky pip which is about 2gallons remaining on a healthy bladder.

    It is explained on here somewhere, but basically fill and then let it bloat outwards from the internal stresses. Then fill more, and repeat until completely full. I did it long ago by squeezing the pump nozzle so that it barely was flowing out and just continued until the pump shut it off. Then I took the pump head out of the tank a bit so there was an air-gap (yay fumes!) and just trickled it in until I saw the liquid petrol build up. Then it bubbled and sucked in. Did that a couple times until the bubble didn't come, and voila.

    The danger is that if you overfill too much and get fuel outside the bladder area, you can do damage. Not guaranteed, and I am sure I got some down there, but if you are careful not to flood it, you are probably OK for a one time short application.
     
  19. Britprius

    Britprius Senior Member

    Joined:
    Jun 14, 2010
    5,194
    1,880
    0
    Location:
    Herefordshire England
    Vehicle:
    2008 Prius
    This is meant as an observation "from a long distance" not a criticism. I wonder how much emissions the bladder tank has saved against the number of reports of the bladder belching out fuel negating those savings. Even 1 gallon of loss is a lot of vapor. Also the more frequent filling must add more vapor to the atmosphere.

    John (Britprius)
     
    #20 Britprius, Oct 16, 2014
    Last edited: Oct 16, 2014
Loading...