Slim Fuel tank - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 17 Old 04-18-2017, 09:20 AM Thread Starter
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Slim Fuel tank

Looks like only a few people are bothered by the JKU fuel tank hanging up to 3" below the passenger frame rail from the searching I've done. Well I am now one of them. Lol
Definitely don't want the rear Genright fuel tank, for several reasons.
I spent about 14 hours on Pritchett Canyon last week and left my Jeep idling a lot of the time and still had over a half a tank of fuel left so I have some leeway on fuel capacity.
Looking around it only seems people offer larger or auxiliary fuel tanks.
Considering fabbing up a slimmer tank that is basically 3" shorter. Anyone remember what all is mounted in the stocker? I seen Genright offers the fuel pump ring.....
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post #2 of 17 Old 04-18-2017, 11:49 AM
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Not a bad idea. You will definitely lose a lot of capacity, I'm going to guess 4 gallons.

There was a company out of Australia selling an extended range tank that fit on the opposite frame rail tucked between the frame and drive shaft. Had to do some rerouting of some shit, but pretty elementary if I recall. It may be the ticket you are looking for.

Edit - or you can buy that fancy Genright wares and give me your new storage box.

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post #3 of 17 Old 04-18-2017, 12:02 PM
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I'm quoting other random people here, so take it FWIW - BUT most say Genright (despite def being a badass item), is still a fuel tank in the back area. Fumes, gas smells, vapors - all an issue. Filling it up at the pump - challenging. Prob not a good street driven idea (and for me w kids - no thanks).
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post #4 of 17 Old 04-18-2017, 12:26 PM
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20 gallons out back and under.


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post #5 of 17 Old 04-18-2017, 12:32 PM
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If you are going to build one for the stock location, you will want to make it out of steel. Too much abuse for aluminum mounted there. In the rear, aluminum is fine. Some people don't like having to cut the storage out in the rear though. You do get the added benefit of being being able to run other types of suspension.

Use a TJ pump ring from someone like Motobilt. $200 for a Genright ring is crazy. Plus, the TJ rin is flush mounted like the stock tank.


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post #6 of 17 Old 04-18-2017, 12:43 PM
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To reference what I posted earlier. Had a bit of time to research what I was talking about. It's labeled as The Long Ranger. ARB supposedly imported some stuff for the 4door.

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post #7 of 17 Old 04-18-2017, 01:10 PM
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Have you tried Titan tanks?
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post #8 of 17 Old 04-18-2017, 02:57 PM
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It seems like if you look at how the 4 door tanks "self clearance" you don't need to raise the tank the whole length. It's more of an issue right in the center where the breakover is. You would really need to alter maybe 1/3 to 1/2 the tanks length.

The easy solution is to just give it time and the tank self clearances as I said. That's how I'm doing it lol
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post #9 of 17 Old 04-18-2017, 03:23 PM Thread Starter
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Slim Fuel tank

Yeah, I guess I gained a little clearance last week lol.

Last edited by cody48; 04-18-2017 at 05:13 PM.
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post #10 of 17 Old 04-18-2017, 03:47 PM
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problem solved.

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post #11 of 17 Old 04-18-2017, 05:14 PM Thread Starter
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Don't want a tank in the rear and sure don't want it in the cab. That looks nice though!


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post #12 of 17 Old 04-18-2017, 07:22 PM
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Quote:
Originally Posted by cody48 View Post
Don't want a tank in the rear and sure don't want it in the cab. That looks nice though!


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I was seriously considering making a slim stock location tank (as far as I know, nobody has ever done this - there'd be very little market as most people just don't seem to care about the stock tank, and the hard core crowd wants to go 4-link triangulated rear and eliminate the exhaust crossover, both of which are impossible with the stock tank location even if slim). I ended up making a rear tank due to the above reasons, plus it'd be a seriously difficult and time consuming task to make a slim stock tank and skid. You'd also lose a ton of gas storage because not only do you lose on the bottom, but the stock tank presses hard up into the cross members which you probably wouldn't want to do with a metal tank.

Regarding fuel quantity, Pritchett Canyon takes very little fuel. I don't think I've ever used up more than a quarter tank on that trail or any single trail in Moab. Go run something like the Rubicon trail or anything longer or more remote and you'll want to bring extra fuel even with the full stock tank.

Why do you not want a tank in the rear? I can understand not wanting it in the cab, lots of obvious reasons there.

There are so many advantages to having it in the rear, and the only disadvantage I can think of is exhaust has to dump in front of the axle which is more of a thing to be happy about than a problem.
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post #13 of 17 Old 04-18-2017, 07:25 PM Thread Starter
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Weight behind the rear axle....stock tank is more centralized. Plus I already welded in that big ass storage box in the rear of tub flush with bottom of bumper.
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post #14 of 17 Old 04-19-2017, 10:19 AM
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Quote:
Originally Posted by cody48 View Post
Weight behind the rear axle....stock tank is more centralized. Plus I already welded in that big ass storage box in the rear of tub flush with bottom of bumper.
You can sell the box ! Lol

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post #15 of 17 Old 04-19-2017, 10:33 AM
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You can sell the box ! Lol

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Or make the box into a tank lol
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post #16 of 17 Old 04-19-2017, 07:07 PM
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Well there are a few options.. first you could have a fuel cell made locally to you.. any fab shop should be able to do it.. or call a fuel cell company and get a quote.. secondly a lot of late model mopar and chevy cars use small long plastic fuel tanks.. some one with fab skills may be able to get that to fit.

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post #17 of 17 Old 04-20-2017, 01:14 AM
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Quote:
Originally Posted by AdrockTT View Post
I'm quoting other random people here, so take it FWIW - BUT most say Genright (despite def being a badass item), is still a fuel tank in the back area. Fumes, gas smells, vapors - all an issue. Filling it up at the pump - challenging. Prob not a good street driven idea (and for me w kids - no thanks).
I have the genright tank and have had zero issues with any of the things you are concerned about. It is easy to see how you could have issues if you did a crappy job on install. The fuel line setup genright sends with the tank is piss poor quality for the price of the tank but can still work if you take your time. I am overall happy with my tank. I definitely carry extra gas on longer trails as I bought the 20 gallon tank.

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