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21 gal Fuel tank, yes or no?

21 gal Fuel tank, yes or no?

jdulmer

Senior Jeeper
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Location
Yorktown, IN
Vehicle(s)
'83 CJ7, 258ci, Weber 2bbl, HEI, Dana/AMC 30/20 axles, T176/Dana 300 TC, Trac-lok rear differential, '95 YJ galvanized body

'98 XJ 4.0L, Dana30/44 axles, NP231 TC, auto transmission

(previously) '78 CJ5, 258ci
I was thinking about upgrading to a 21 gallon fuel tank. But, I am worried that it will hang too low, and possibly hang up, when off road, thoughts?



"Libertatem Aut Mortem"


-Samsung GSIII (CM10.2.1)

-LG Lucid (CM10)

-LG Revolution (BrokenOutRevo 2.0.1)

-Samsung Fascinate (CM7)
 
no experience but im interested in this option.
 
no experience but im interested in this option.

Sold on JC Whitney... That extra 6 gallons would come in handy, right?



"Libertatem Aut Mortem"


-Samsung GSIII (CM10.2.1)

-LG Lucid (CM10)

-LG Revolution (BrokenOutRevo 2.0.1)

-Samsung Fascinate (CM7)
 
definitely just dont know about the dimensions, im sure someone will chime in that has gone down this road.
 
I have two five gallon cans on the back that have never had fuel in them. If you are going to drive cross country I guess it would be cool but I would rather take a whoopin than drive the CJ more than a couple hundred miles. 15 gal.s works fine for me.:D

Less weight more clearance.:cool:
 
I have two five gallon cans on the back that have never had fuel in them. If you are going to drive cross country I guess it would be cool but I would rather take a whoopin than drive the CJ more than a couple hundred miles. 15 gal.s works fine for me.:D

Less weight more clearance.:cool:

You definitely have a point there. CJs are definitely not road trip vehicles. I would still like to explore the option.



"Libertatem Aut Mortem"


-Samsung GSIII (CM10.2.1)

-LG Lucid (CM10)

-LG Revolution (BrokenOutRevo 2.0.1)

-Samsung Fascinate (CM7)
 
Yes, The larger tank will hang down more. But, If you use more than 15 gallons in a day when you're wheeling you must be hard on the skinny pedal. I can go three days on 10 gallons. But then i'm easy on it. And i don't like to break stuff cause i have to repair it myself. If you have a body lift, You can build a new top strap and tuck the tank up in a little further
 
I also use my Jeep as a daily driver, not a lot of miles, but I will occasionally go on short road trips in it...



"Libertatem Aut Mortem"


-Samsung GSIII (CM10.2.1)

-LG Lucid (CM10)

-LG Revolution (BrokenOutRevo 2.0.1)

-Samsung Fascinate (CM7)
 
Good notes guys thanks

Sent from my EVO using Tapatalk
 
I've thought about it as I'm really close to empty after a full day of wheel'n.
But having the tank hang down 5" farther really turned me off as my gas tank skid plate takes a beating now.
Here's the place I was looking at them. http://www.mtscompany.com/jeep.htm
 
I added a 21 gal tank for the extra range . Allows more room for other essentials for a 4-5 day backcountry desert trip. It does hang down about 3" lower than the stock tank though, so you must choose your lines wisely ;)
 
I added a 21 gal tank for the extra range . Allows more room for other essentials for a 4-5 day backcountry desert trip. It does hang down about 3" lower than the stock tank though, so you must choose your lines wisely ;)

I think I could deal with 3". I am definitely going to put this on the "to do" list.



"Libertatem Aut Mortem"


-Samsung GSIII (CM10.2.1)

-LG Lucid (CM10)

-LG Revolution (BrokenOutRevo 2.0.1)

-Samsung Fascinate (CM7)
 
My thoughts have been along the lines of setting the 5 gal cans up with outboard motor fittings and hoses. this pulls 10 gal.s directly from the cans into the fuel line through a switching valve. I get to use the gas in the cans first with enough in the tank to retrace my trip with 5 gal to spare. When I don't need it, it goes away. Or an Oklahoma credit card to transfer the fuel from the cans to the tank would be much easier, just not as cool.:cool:
 
FuelTank1Small.webp

FuelSystemPlumbing004.webp

Custom made by TrailQuest a long time ago. 20+ gallon capacity, heavy gauge steel, with an additional heavy diamond plate skid on the bottom. I does hang lower than a stock CJ tank would, but I'm not crawling big rocks.
 
thats a nice job, love the fuel lines.
 
Here's my 2 cents- I bought and installed a new 21 gallon tank on my 83' CJ7 . It does sit a little lower and wider. However it is above the axle. I have found that it makes a huge difference! I don't have to worry about bringing xtra gas along, even with the gas guzzling mods I made! I hope your gas gauge works cause mine is forever stuck on 1/2. I just don't worry like I used to. Good luck!
 
Here's my 2 cents- I bought and installed a new 21 gallon tank on my 83' CJ7 . It does sit a little lower and wider. However it is above the axle. I have found that it makes a huge difference! I don't have to worry about bringing xtra gas along, even with the gas guzzling mods I made! I hope your gas gauge works cause mine is forever stuck on 1/2. I just don't worry like I used to. Good luck!

Sending unit and gauge replacement in your future? Doing mine next week..



"Libertatem Aut Mortem"


-Samsung GSIII (CM10.2.1)

-LG Lucid (CM10)

-LG Revolution (BrokenOutRevo 2.0.1)

-Samsung Fascinate (CM7)
 
There's an OEM 20 gallon poly tank that was an option on later CJ's. They have a fully enclosed skid plate and are wider than the 15 gallon tank. If you want a 20 gal you would be best off getting a custom tank like the one pictured above, or finding a 20 gal OEM tank and using it. The 20-21 gallon tanks that use the 15 gal skidplate will hang down a lot more as they aren't as wide, just taller.
 
Update... The 20 gal, OE tank is the way to go. Doesn't hang low at all.



"Libertatem Aut Mortem"


-Samsung GSIII (CM10.2.1)

-LG Lucid (CM10)

-LG Revolution (BrokenOutRevo 2.0.1)

-Samsung Fascinate (CM7)
 

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