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Author Topic:   gas tank inside console?
peter ortisi posted 05-16-2002 07:48 AM ET (US)   Profile for peter ortisi   Send Email to peter ortisi  
I am contemplating putting my gas tank inside
my center console. Is this dangerous considering my switch panel and electronics are there? (The console is vented) In an extreme application I could put the battery
in there as well. The way I would do it is
that the tank would mount on the deck. About
6'' above it there would be a shelf that the
battery would sit on. This seems like I might
be asking for trouble so I was hoping to get some opinions.
Soho posted 05-16-2002 08:03 AM ET (US)     Profile for Soho  Send Email to Soho     
I have my tank, battery, fuel filter and fuse panel all in the console, lots of venting as it is a home designed and made console and is basically open at the back. I guess there is some risk of fire etc but I figure it is pretty small. Normally there should be no fumes and you just need to be careful when filling.

I think that this setup is not uncommon.


70_Katama posted 05-16-2002 09:32 AM ET (US)     Profile for 70_Katama  Send Email to 70_Katama     
Any problems with the extended fuel line (vacume)? How close is your primer bulb to the engine?
Soho posted 05-16-2002 10:36 AM ET (US)     Profile for Soho  Send Email to Soho     
Funny you should ask. The whole setup is new ( on an 69 Nauset ) New 3/8 house, new Tempco primer bulb ( about to be replaced with OEM Yamaha ) on a new Yamaha 90.

About 10 minutes into the inaugral re-launching of the boat, after being out for 4 years, the engine starved for fuel - the fix was to route around the Racor as it seemed to be restricting the flow of fuel. After some discussion on this site I plan to put a better bulb on ( these Tempco's seem to be not so good ) and try the set-up again. I had exactly the same setup on the boat from 92-98 and it worked flawlessly, so I think it should work again. If there are more problems, I plan to move the primer to by the engine. I have another thread going on this ( "Racor blocks fuel flow" or something like that ) that I will update.

Again, to answer your question, it worked in the past for me.



lhg posted 05-16-2002 03:26 PM ET (US)     Profile for lhg    
There is not a boat manufacturer around that would put a gas tank in an enclosed console, along with electrical components and batteries! The combination of potential sparks and fumes doesn't mix at all. For example, when you put jumper cables on a battery it almost always sparks. Fuses can also spark when removed or replaced if the circuit is live.

BW put the fuel tanks in the mahogany consoled boats UNDER the console, in an open ended, vented area, clearly separated by 3/4" plywood from the OPEN vented upper console, where some switches could be located. No batteries were in this area at all.

I would not put outboard cap-vented fuel tanks in a console with electrical items, unless you are in the business of being a Suicide Bomber.

Soho posted 05-16-2002 04:25 PM ET (US)     Profile for Soho  Send Email to Soho     
Good points on the dangers presented, I am going to make a couple of modifications to separate and better vent my fuel tank to eliminate the fire risk... I have no desire to flame out....
lhg posted 05-16-2002 04:47 PM ET (US)     Profile for lhg    
Worse than that, we'd hate to see the world lose a '69 Whaler!!
fester posted 05-17-2002 01:00 AM ET (US)     Profile for fester  Send Email to fester     
I would never use a cap vented gas tank in an enclosed space or below deck even if the area is vented. Its too dangerous. This is especially true if electrical components are also located in the same space. A fuel tank placed in any enclosed space should be the type that is designed for this and is vented outside of the enclosed space.
EddieS posted 05-17-2002 01:47 AM ET (US)     Profile for EddieS  Send Email to EddieS     
Amen Brothers!

I installed a 20 gallon tank in a custom swing back. This tank is a below deck type vented to the outside of the seat, with a deck fill installed on top. I installed a fuel gauge on the console and additionally installed a three way fuel valve for two more 6 gallon metal tanks in front of the console. I do not have any problems with fuel flow from the front tanks. I ran 3/8 fuel line all the way from tanks to motor.

I toyed with installing tanks in the center console but it requires an open seperate compartment like the older 17's have. I would not dream of using cap vented tanks in an enclosed center console. Even with vents you would need to use a blower to get the fumes out of the console before you entertained the thought of starting that bad boy up.

I would suggest leaving them under the seat or moving them forward of the console. I built a shelf system mounted to the front of the console and resting on the deck to house the two 6's and still allow me to place the cooler on top. Works for me!


triblet posted 05-17-2002 12:26 PM ET (US)     Profile for triblet  Send Email to triblet     
If the tank is in the console, it's in an
enclosed area and needs a blower.


dfmcintyre posted 05-17-2002 01:35 PM ET (US)     Profile for dfmcintyre  Send Email to dfmcintyre     
How do PWC's get around that requirement?


FISHNFF posted 05-17-2002 11:57 PM ET (US)     Profile for FISHNFF  Send Email to FISHNFF     
Here we go.
In my Montauk console, I have two group 24 batteries in boxes along with a Tempo portable fuel tank which holds exactly 11 gallons. I replaced the mahogany doors with black Lexan and the rear door always stays open. Also inside are battery switch, battery combiner, dry box with flares, dry box with tools, parts, and registration, throw cushion, and two spare life jackets. Oh yeah, and a partridge in a pear tree! I've been running this set-up for 7 years, and my partner before me for 7 more with no problems. Knock on wood. All batteries are covered, console always vented, and I have an external plug if I need a jump. I have a fuel line switch to go from the console tank to an other tank set in front of the console for added range with the bulb just downstream from the switch. So far in I only needed to use the bulb about 3 times in 7 years. Maybe we/I are/am just lucky, but I believe in this set-up and it suits mt needs for maximum space perfectly. I have an Alert bare hull, so no seat, just room for more ice chests and fishing room.


mcole posted 05-20-2002 04:54 PM ET (US)     Profile for mcole  Send Email to mcole     
I think a fuel tank inside a Montauk console is a 100% accident waiting to happen! Put the battery and Oil tank under the console. But keep the tank in a well vented area like were it belongs, under the RPS. Also I think weight loading would change the way the boat performs and rides in the water. The bow would tend to ride lower causing even more back snaping, jaw breaking awful 17' ride.
Just kiddin, I love my bumpy Montauk!
Steve Leone posted 05-22-2002 03:34 PM ET (US)     Profile for Steve Leone  Send Email to Steve Leone     
i agree with the idea of no fuel in the console. unless of course it is sparated as stated earlier. some folks do not have an rps though. some folks have a cooler to sit on. one suggestion is to install a back seat and run two 6gal (removable) on either side (underneath) with a quick disconnect style fuel fitting to tanks (such as o.m.c). i agree about those darned tempo bulbs too. they are about as good as a turkey baster. they must have manufactured a million or so BEFORE they changed the gas. the little check balls in them distort over a very short period of time. thus no more "check", just checkmate. in my opinion o.m.c. makes the best primer bulb, shields the best hose and again o.m.c. the best fuel fittings with the old style merc running a close second. the aftermarket o.m.c. style fitings are, well, garbage. steve out.
Eric posted 05-30-2002 10:44 PM ET (US)     Profile for Eric  Send Email to Eric     
My Nauset has the tank under the console. The stern part is totally open with no door, so venting isn't an issue. There's no way that my tank could be said to be in an enclosed space. Also, the non-whaler console is flat on the bottom, leaving a room for water and air flow between the console and the deck. The batteries are in boxes in the front of the console, the battery switch is on the side next to the batteries. The wiring for fuse block and switches is in the upper portion of the console. This area is separated from the tank/lower portion by a shelf, although there is a hole in it for the wires and the steering/control cables.
Jerry Townsend posted 05-31-2002 11:52 AM ET (US)     Profile for Jerry Townsend  Send Email to Jerry Townsend     
Peter - in my opinion (retired engineer with a lot of accident analyses, born and raised in the oil patch and having been around the stuff for years) - no way. Don't take the chance of a explosive air mixture in the console and not having a spark. The last thing you want on a boat is the console exploding and a fire.

Some talk about providing air circulation through the console - and that is good - except if you have a lot of gas fumes being generated and emitted at the same time. Remember, it is the mixture ratio of gas fumes and oxygen that causes the problem. ----- Jerry/Idaho

myotherboatisawhaler posted 06-19-2002 06:33 PM ET (US)     Profile for myotherboatisawhaler  Send Email to myotherboatisawhaler     
i am in the process of completly refurbishing a 84 montauk and am planing on permanatly mounting the tank in the console. i will in stall a grounded aluminum built in fuel tank with permenant fill hose and vent acessed on the side of the console adjesent the fire extinguisher. the console is vented via the openings at front and rear at floor level. i don't see any difference between this installation and that of a larger inboard boat that has electrical equipment in the bilge adjacent to fuel tanks. i supose a blower my be a prudient safty additive but the area under the console is certainly not as confined as a bilge on a larger vessal. am i missing something?
bsmotril posted 06-20-2002 10:15 PM ET (US)     Profile for bsmotril  Send Email to bsmotril     
About 80% of the bayfishing skiffs built and sold along the TX coast in the last 10 years have the fuel tank built into the console. Builders like Shoalwater, Shallow Sport, Trans-Sport, Dargel, El Pescador, Stoner Craft, Haynie, Majeck, and Gulf Coast all do it. The shallow cored hulls leave no room under the deck for tanks, and the rear deck is left open for fishing. In the 20 years I've been boating in that area, I have never heard of a console fuel tank blowing up. Not to say it cannot happen, but I think the risk can be satisfactorily miticaged with proper installation, grounding, and venting.
bsmotril posted 06-20-2002 10:17 PM ET (US)     Profile for bsmotril  Send Email to bsmotril     
Fat Fingers here...Miticaged should have been "mitigated"

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