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Author Topic:   Internal vs external gas tank

Buellrunner posted 04-20-2008 02:34 PM ET (US)
Besides being able to pull the tanks, are there any other advantages to the Montauk 17's external fuel tanks? I noticed the Montauk 19 is internal...and I am a big fan of that model...
cheers everyone!

Dick E posted 04-20-2008 02:49 PM ET (US)
Advantages
*If mooring a boat, cheaper gas- you can buy inland
also fresher gas
*Easier to diagnose a fuel problem.
*Limited supply of gas carried over to next season
* Easier to add additional tank for extended voyage
* Easier and less costly to replace 10- 20 years down the road.
* First in gas first out
JMARTIN posted 04-20-2008 05:42 PM ET (US)
Disadvantages, deck space, amount of fuel you can carry. John
EIKNIB posted 04-20-2008 10:02 PM ET (US)
Advantages
Tank doesn`t need to be grounded
Tank doesn`t need an breather(overflow) on the outside of the hull.
Disadvantage
Takes up deck space.
rich
EIKNIB posted 04-20-2008 10:04 PM ET (US)
Another thought. The external tanks are a simpler installation. Usually on boats the simplest way is the best way.
rich
Buellrunner posted 04-21-2008 09:44 AM ET (US)
I wish there was a Montauk 19 with external tanks..
sapple posted 04-21-2008 10:23 AM ET (US)
On my 170 Montauk I don't find the deck space issue to be too big of a problem because both fuel tanks fit under the seat. However, if they were not there, I could store other stuff under the seat.
What external fuel tanks does allow is more flexible fuel usage and purchasing. I have three 6.5 gal tanks. Most of the time I use two on board and that is usually enough for a day's worth of boating. If I plan on an extended trip or am not sure about availability or location of marinas, I take three. I usually keep a full tank (filled at the local gas station) in my garage. After a boat outing, I swap the emptiest tank from the boat with the full tank from my garage and fill the empty from the boat at a local gas station when I get gas for the truck. That way most of my gas is purchased at local gas stations and I have more choices of prices and octane ratings. Also, I could always extend my range by getting more portable fuel tanks, although I have not had to do that yet.
sapple posted 04-21-2008 10:40 AM ET (US)
Another advantage of external fuel tanks is that if necessary, you can use the fuel from a portable tank for something other than the boat. I was returning from a trip to Smith Mt. Lake to Richmond VA this weekend driving about 150 miles through back roads and running low in fuel for the truck and not sure when I would see the next gas station. Then I remembered I still had about 8 gallons of fuel left in the three portable tanks for the boat that I could have used for the truck if I had to. I have not had to do that yet but I have used fuel from boat tanks for lawn equipment.
SJUAE posted 04-21-2008 04:36 PM ET (US)
I looked at the Montauk 17 and personally disliked the portable tanks.
There are enough articles here about installing a more semi permanent/bigger tank to make me think many others feel the same.
I never thought it as an advantage having to lug 2 or 3 heavy tanks on board or having them in the back of the car
Having more fuel low down in an inboard tank will defiantly improve ride as the roll centre and CoG is lower and the boat is heavier compared to what you can practically store with portable tanks.
Deck space and storage is a premium you can’t ignore vs flexible fuel usage and purchasing, although you can always fill up an inboard tank from a portable one (not recommended at sea BTW) and gain the advantages already stated by others.
If you really want portable tanks on a 190 just modify the leaning post similar to the 170 and run the appropriate fuel line via a small hole back to the inboard main take access point.
Look at the whalerparts.com fuel diagrams for the 170/190

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Author	Topic: Internal vs external gas tank
Buellrunner	posted 04-20-2008 02:34 PM ET (US) Besides being able to pull the tanks, are there any other advantages to the Montauk 17's external fuel tanks? I noticed the Montauk 19 is internal...and I am a big fan of that model... cheers everyone!
Dick E	posted 04-20-2008 02:49 PM ET (US) Advantages If mooring a boat, cheaper gas- you can buy inland also fresher gas Easier to diagnose a fuel problem. Limited supply of gas carried over to next season Easier to add additional tank for extended voyage * Easier and less costly to replace 10- 20 years down the road. * First in gas first out
JMARTIN	posted 04-20-2008 05:42 PM ET (US) Disadvantages, deck space, amount of fuel you can carry. John
EIKNIB	posted 04-20-2008 10:02 PM ET (US) Advantages Tank doesn`t need to be grounded Tank doesn`t need an breather(overflow) on the outside of the hull. Disadvantage Takes up deck space. rich
EIKNIB	posted 04-20-2008 10:04 PM ET (US) Another thought. The external tanks are a simpler installation. Usually on boats the simplest way is the best way. rich
Buellrunner	posted 04-21-2008 09:44 AM ET (US) I wish there was a Montauk 19 with external tanks..
sapple	posted 04-21-2008 10:23 AM ET (US) On my 170 Montauk I don't find the deck space issue to be too big of a problem because both fuel tanks fit under the seat. However, if they were not there, I could store other stuff under the seat. What external fuel tanks does allow is more flexible fuel usage and purchasing. I have three 6.5 gal tanks. Most of the time I use two on board and that is usually enough for a day's worth of boating. If I plan on an extended trip or am not sure about availability or location of marinas, I take three. I usually keep a full tank (filled at the local gas station) in my garage. After a boat outing, I swap the emptiest tank from the boat with the full tank from my garage and fill the empty from the boat at a local gas station when I get gas for the truck. That way most of my gas is purchased at local gas stations and I have more choices of prices and octane ratings. Also, I could always extend my range by getting more portable fuel tanks, although I have not had to do that yet.
sapple	posted 04-21-2008 10:40 AM ET (US) Another advantage of external fuel tanks is that if necessary, you can use the fuel from a portable tank for something other than the boat. I was returning from a trip to Smith Mt. Lake to Richmond VA this weekend driving about 150 miles through back roads and running low in fuel for the truck and not sure when I would see the next gas station. Then I remembered I still had about 8 gallons of fuel left in the three portable tanks for the boat that I could have used for the truck if I had to. I have not had to do that yet but I have used fuel from boat tanks for lawn equipment.
SJUAE	posted 04-21-2008 04:36 PM ET (US) I looked at the Montauk 17 and personally disliked the portable tanks. There are enough articles here about installing a more semi permanent/bigger tank to make me think many others feel the same. I never thought it as an advantage having to lug 2 or 3 heavy tanks on board or having them in the back of the car Having more fuel low down in an inboard tank will defiantly improve ride as the roll centre and CoG is lower and the boat is heavier compared to what you can practically store with portable tanks. Deck space and storage is a premium you can’t ignore vs flexible fuel usage and purchasing, although you can always fill up an inboard tank from a portable one (not recommended at sea BTW) and gain the advantages already stated by others. If you really want portable tanks on a 190 just modify the leaning post similar to the 170 and run the appropriate fuel line via a small hole back to the inboard main take access point. Look at the whalerparts.com fuel diagrams for the 170/190