need help with remote fuel tank

Discussion in 'The Garage' started by sallydog, Oct 2, 2013.

  1. sallydog

    sallydog AVERAGE 78.1 MPD

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    i have this tank on my tenere. the fuel pump is in the tank.

    i have this remote tank, i can get the hose for it

    anyone know how i can pipe this all together?

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    #1
  2. Kaw4Life

    Kaw4Life Busted Adventurer

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    Would love to help but I am electrical smart, talk to MikeWillSmith.
    #2
  3. DRjoe

    DRjoe Long timer

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    That's a merc oil tank.

    First thing I'd do is fill it with petrol and leave it for a week or so to see what components can and can't handle the fuel.

    After you've proved it will work it might easiest to find the correct fitting for it.

    On the fitting one barb is in and one is out so maybe look at running the out hose to the breather coming your stock tank and then the in hose can be the breather.

    That way as the main tank has its fuel used up the breather will suck fuel from the small tank.

    Does that make sense?
    #3
  4. Tammy

    Tammy Team 2nd Wind

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    Chris i have a setup like what your looking to do call me and ill fill ya in on how i did it.
    #4
  5. sallydog

    sallydog AVERAGE 78.1 MPD

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    the tank will work for gas. the fitting has 2 hoses and is readily available. im thinking i can just route it in thru my vent line
    #5
  6. sallydog

    sallydog AVERAGE 78.1 MPD

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    and it came with 2 gallons of 2 stroke oil. just in time. i am out :D
    #6
  7. sallydog

    sallydog AVERAGE 78.1 MPD

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    so, it been identified as a remote oil tank for mercury boat motor. but the fitting is obsolete. new style is different. who knows where i can get the part?
    #7
  8. sailah

    sailah Lampin' it

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    I have no idea about plumping on the S10, but I will jut say I have gone through some growing pains regarding using the vent on a FI bike. For quite awhile the main tank was over pressurizing and blowing fuel out the filler neck into my crotch while riding and onto a hot header.:huh

    Especially with a non standard tank you might consider a stand alone setup like a rotopax. I know it's not blingy and you have to actually unscrew the cap but it might be was less of a hassle.

    I think on most FI bikes I have seen aux tanks plumbed in through a bulkhead fitting drilled through the main tank like the Iron Butt FJR etc. If it were as simple as going through the vent, I think most of those savvy cats would have been using that method vs drilling a hole in their tank.

    Anyways regarding your oil tank, you might call around to an outboard repair shot in your area or ebay or a marina that does repairs.

    On your tank diagram, it shows 2 "vent lines" A&B. One is def the slop drain that drains the fuel overflow and water around the neck. That one can not be used to backfill as it doesn't touch the fuel. The other might be a tank vent, but it looks like it's also venting around the slop ring and might be integral to some mechanism in the fuel cap. Shove some stiff monofilament down those drains and see where it comes out. I had to disable the one way valve in my filler cap so that the main tank would vent but my tank only has one straw internally while yours has two.
    #8
  9. H96669

    H96669 A proud pragmatist.

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    Obsolete from Mercury Marine??? Maybe from the usual Marine suppliers. Looks like it is still listed in the Paynes Marine catalogue, 033486 but Eh they are Canadian. However they sell the same products as the American suppliers.Scepter or Moelller brand. Sorry not on the coast to go check right at the stores.:wink:

    http://marinecatalogue.ca/#/420/
    #9
  10. sallydog

    sallydog AVERAGE 78.1 MPD

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    thank you
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  11. hogasm

    hogasm Adventurer

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    Remove your sending unit on the main tank. Drill and install a bulkhead fitting.

    This is a company that sells one for a grvity feed for a goldwing....but you can do the same on your bike using the pump to feed the tank
    http://www.dayledesigns.com/qt/Plumbing.htm
    #11
  12. sallydog

    sallydog AVERAGE 78.1 MPD

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    thanks for that link. the parts list will come in handy. but i have a couple issues. my tank has the pump on the bottom.
    i am waiting for the tank connection fitting. here is what i am thinking.my remote tank will sit higher than my regular tanks gas pump by at least 6 inches. if i run my existing tank vent to the remote tank out as my tank empties it will draw from the remote tank (like a siphon) without putting extra pressure on the pump. my gas gauge will also still read correctly. when unplugged the tank connection fitting would serve as the vent.
    is there any reason that wont work?
    #12
  13. H96669

    H96669 A proud pragmatist.

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    I think that will work unless you have air in the line. How about one of them "primer bulbs" on the line just in case you have problems starting the syphoning action.
    #13
  14. CollinsB

    CollinsB Been here awhile

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    The aux tank a great idea..but at the end of the day, carrying an extra fuel can or bottles is often a better option.
    #14
  15. sallydog

    sallydog AVERAGE 78.1 MPD

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    i dont agree.
    rotopax are nice but a rotopax that plugs in is nicer. anything smaller is a waste of time. if you have a tank that plugs in you only have to carry it when you need it, and the plug is hidden when you arent carrying the tank
    #15
  16. Full Power

    Full Power Long timer

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    SIMPLY plumb a hose, directly from the outlet of your AUX tank to the VENT on the bikes original tank.
    As fuel is withdrawn form the PEM tank, it will draw fuel from AUX tank. very easy.
    #16
  17. sallydog

    sallydog AVERAGE 78.1 MPD

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    i inherited a remote oil tank with 2 gallons of bel ray 2 stroke oil.

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    the fitting was obsolete because of issues.

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    so i cut up another old boat tank for parts

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    this tank works great. i just connected it to the tank vent line. the 3 gallon tank is a nice size and shape making it easy to secure however i like.

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    i keep the fill lid a little loose for venting now but i ordered a check vent. this will be nice for the big trips. i dont do anything but plug in the tank and it sucks dry first. the remote tank is empty before the digital fuel gauge starts to go down
    #17
  18. H96669

    H96669 A proud pragmatist.

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    Looks good and I like cheap.:clap I see you kept the primer bulb, I kind of mentioned that bulb earlier to start the syphon action. Tell me/us if it is useful?:ear
    #18
  19. sallydog

    sallydog AVERAGE 78.1 MPD

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    i kept it on and i pumped it to get fuel in the line but i dont think i need it. next tank i will try without pumping but since it is hooked to the 5 gal main tank vent it has to suck it empty.
    #19