Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: Moeller 22 Gallon Tank for Montauk 170

Posted by doberman1 on 06/23/14 - 7:36 AM
#1

About to purchase and install the white 22/24 gallon Moeller tank on my 2014 Montauk 170:
http://www.jamestowndistributors.com/...pid=64162#

Do I need anything else besides the tank to do the install? Tie down brackets or any other hardware? Could I use the fuel lines from the two tanks and tie downs that came stock with boat? Any tips on install and other suggestions are appreciated.

Posted by wing15601 on 06/23/14 - 10:04 AM
#2

There are several options offered by Moeller. One option is a set of two straps that secure to the deck on the forward and aft sides of the tank. One strap on the starboard side and one on the port side. the fittings these straps attach to on the deck require two screws each, 8 screws into the deck. Moeller also offers four stainless steel brackets and all their above deck tanks are molded to accept them. Each of these brackets have three screw holes but I only used two screws in each one on the tank in my 13 Whaler. I had purchased them to use in my Montauk 17 but the tank in that boat (same tank as yours) is sitting on top of the two original gas tank pads and they raise the tank about 1/4 inch so the brackets can't be used. incidentally, we had a discussion about these tanks a while ago on this site and Moeller used to make a 24 gallon tank for the Mobtauk. Well, it seems the tank hasn't changed, the de ensigns remain the same, and it was decided they de rated the capacity of the tank to keep people from overfilling them (maybe) because the fill cap/vent is aft which is usually the lower side and when the tank heats up and the gas expands it will leak out. Sorry for the long winded response.

Posted by luckydog on 06/23/14 - 12:59 PM
#3

Wing,
Did you have to trim the inside lips on your tank pads (in other words, the lip on each pad that would run down the center of the Moeller tank) or is there some type of groove molded into the tank alowing it to sit flush in the pads?

Thanks

Posted by Finnegan on 06/23/14 - 3:00 PM
#4

I recommend you use the two strap method, which will require 4 footman's loops screwed into the boat floor. Also cut some white "DriDeck" squares to size as a cushioned pad to set the tank on, so that the tank will not grind out the non-skid floor from dirt or sand, etc. Water can run underneat it, etc.

I highly recommend strapsworks.com as a source. You can configure exactly what you need, probably white webbing straps, including the very nice spring loaded SS "bear trap" type buckle, which holds very well, and the footmans' loops. The hold-down kit sold by Moeller is for permant tanks, and is unattractive, and not meant to be exposed on deck.

Posted by wing15601 on 06/23/14 - 4:46 PM
#5

Lucky dog, the tank was put into the boat by the previous owner so I don't know. I think the tank is sitting on the edges of the pads so, two supports down the middle and one on each end. They seem to support the tank ok and if I ever go to the boat and find a split and empty tank I'll rethink my decision but I think the bottoms of the Moeller tanks are probably made thick enough to handle it. Of course, on second thought, once the bilge pump detects the gasoline and turns on I'll probably not have a boat to go to.
Just looked at my personal website. It appears the bottom of the tank is completely flat.

Edited by wing15601 on 06/23/14 - 4:49 PM