fuel tanks

Discussion in 'Restoration Projects & Questions' started by plantman, Oct 8, 2006.

  1. plantman

    plantman Established Hydrodyner

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    Aug 27, 2006
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    Location:
    Connecticut
    Boat Model and Year:
    hydrodyne 64or66
    I am replacing a fuel tank I installed under the bow. We put it there to keep the boat on plane no matter the speed. Has anyone else done this? I have the filler cap in the instrument tunnel.
     
  2. jim

    jim Hydrodyne 18 Specialist

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    77 Dyne 18 I/O converted to Outboard
    Mine was replaced, I did not do it myself. I saw some of the process though. My filler is in the deck.

    jim
     
  3. plantman

    plantman Established Hydrodyner

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    Location:
    Connecticut
    Boat Model and Year:
    hydrodyne 64or66
    How many gallons is yours? is it plastic or metal? mine was metal but twenty years has led to rot were there was a dent. this time I think plastic is thew way to go.
     
  4. jim

    jim Hydrodyne 18 Specialist

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    77 Dyne 18 I/O converted to Outboard
    Mine is an 18 gallon plastic now. I suppose stainless would be the best. Steel rusts, aluminum sweats, so I went with plastic. It has been in there for 9 years.

    The only downside is that my filler is in the deck so the nozzle needs to enter the tank neck. The neck is so narrow that a gas station nozzle will just barely fit in. It takes a little fiddling around to get it in. I fuel mostly from cans now using a siphon so that is not a problem.

    You should not have that problem because your filler is higher.

    jim
     
  5. 2MERCS

    2MERCS Administrator

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    Location:
    Eastvale, Ca
    Boat Model and Year:
    1973 Hydrodyne 18 w/Twin 1150 Mercs
    The tanks I have are Stainless and are side mounted. I have not really had any problems except one of the pickups inside the tank must have cracked. It started to suck air so I ran a piece of tube down the original hard line and fixed that problem. Each tank is 17 Gallons. You can see them in the picture I am going to upload in a sec.

    Daniel
     
  6. 2MERCS

    2MERCS Administrator

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    Location:
    Eastvale, Ca
    Boat Model and Year:
    1973 Hydrodyne 18 w/Twin 1150 Mercs
    Almost Forgot the Picture.
     

    Attached Files:

  7. plantman

    plantman Established Hydrodyner

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    Location:
    Connecticut
    Boat Model and Year:
    hydrodyne 64or66
    That is one cool pic!! <img src="{SMILIES_PATH}/icon_surprised.gif" border="0" alt="Rock On" title="Rock On" />

    how far into the boat do the tanks come? it looks like they come in from the side wall a few inches. or it could just be my eyes
     
  8. markbano

    markbano Hydrodyne 18 Specialist

    Joined:
    Nov 4, 2005
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    854
    Boat Model and Year:
    1973 Hydrodyne Tournament Skiier
    For my restoration I purchased a Temp 18 gallon below-deck fuel tank. You can purchase these tanks on iboats.com or see tempoproducts.com. You just need to make sure you are getting one that fits the space under the deck, and leave enough room for the fuel line and fuel vent. The fuel line and vent kit can be purchased separately. I will be posting a list of vendors for hydrodyne restoration at some point as part of this website.

    Markbano
     
  9. jim

    jim Hydrodyne 18 Specialist

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    Mark,

    Take a close look at Daniels interior picture above. The floor ends right behind the seats. they restored it that way. It gives it a different look.

    The pylon loads are carried through the deck and the engine mounts. Very clever.

    jim
     
  10. markbano

    markbano Hydrodyne 18 Specialist

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    Boat Model and Year:
    1973 Hydrodyne Tournament Skiier
    Interesting. I am having trouble seeing it because the picture is very dark but conceptually I understand the description. So basically the floor of the hull is the actual floor toward the back of the boat?
     

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