Motobilt is Releasing a new Gas Tank and Skid

Yea I figured it came down to fab work. I have seen guys run genright stretch tanks with back half kits.
It does look like a lot of work.
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Nice work. I need to keep some of my frame shape for the AiRock or I would have to do a TON of fab work to get the upper spring bucket where I need it. Stretching the frame is just the solution for my rear axle hitting the crossmember.
I'm stretching my WB 5" in the rear.
 
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I won't go to a 15 gallon tank unless I had no other choice. Right now I am planning on using the GenRight 20 gallon fuel cell. I have a GenRight extend range tank that I am taking out. It replaced the stock tank with a 24.5 gallon tank and I was able to fit my CRD 60 rear axle BEARLY. As a side note I bought it used from Tony when he took it out of his Jeep back in 2005/6.

Once I cut my rear frame section I won't be able to use a fuel tank in the back. I could just notch my crossmember but I would lose 1 mounting point on the crossmember for the tank skid. The fuel cell at this point just seems to be the better option.

And yes they use to offer a 15 gallon tank BUT they were the same size as the 20 gallon tank. The only difference was there was a tube in the filler neck that made it a 15 gallon instead of a 20 gallon tank. It use to be a popular modification to drop your tank and pull the fuel pump and reach in and cut that neck off. You could change your 15 gallon to a 20 gallon for about 2 hours of work. Ask me how I know???


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A little dirty but still a very AWESOME fuel tank.... And 24.5 gallons.
Will you be selling that set-up?
 
Regardless of what we can speculate from the photo in my original post, it’s just speculation until they release the details. But it may absolutely be smaller.

The phrase, “stretch tank,” is the wrong way to put it. A tank that some may label a stretch tank does indeed look much smaller which allows the stretch. But they are really more of a, “reshaped,” tank, being that some stretch tanks are actually rated to hold the same amount of gasoline as the factory tanks.

While the tank may “look,” smaller, it is often a fool who claims it so. It’s only been reshaped with priority being centered around making room to stretch the rear center section further back without contacting the gas tank. Which, is why some people believe them to be smaller.

Take for example, an early model TJ, it came from the factory with a 15 gallon tank. If you were to try to increase the wheelbase by pulling the rear axle back, that factory 15 gallon tank would probably allow 1 inch of stretch, if that.

An aftermarket 15 gallon, “stretch,” tank holds just as much gasoline as the early model gas tank but allows 9 inches of wheelbase stretch because of it’s shape.

Example : Genright’s Alien tank. 15 gallons and allows up to 9 inches of rear wheelbase stretch.
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https://genright.com/products/alien-crawler-gas-tank-skid-plate-15-gal-jeep-tj-lj.html
The later model TJ’s/LJ’s, all the way through 2006, came with a 19 gallon tank. The factory 19 gallon tank allows for about an inch of wheelbase stretch, but most folks cant even get that much with a trackbar still on the rear axle.

However, an aftermarket stretch tank can be had that will allow 19.5 gallons of gasoline, yet allows 5 inches of rear wheelbase stretch.

Example: Genright’s Crawler EXT Tank. 19.5 gallons and can accommodate up to 5 inches stretch.
https://genright.com/products/jeep-tj-lj-crawler-ext-gas-tank-skid-plate-19-5-gal.html

The early 15 gallon tank was the exact same tank as the 19 gallon tank with a different vent tube. Cut the vent and you get a 19 gallon tank. The was no difference in size or volume or the ability to move the axle back.

I don't think my observations of the MB tank being smaller or that it might be a stretch tank are foolish. Otherwise, there is little reason to deviate from the factory form the way they appear to have done so.
 
The early 15 gallon tank was the exact same tank as the 19 gallon tank with a different vent tube. Cut the vent and you get a 19 gallon tank. The was no difference in size or volume or the ability to move the axle back.

Yep I said the same thing, I also did this modification since my TJ was a SE model it of course came with the 15 gallon tank. I did that mod about 6 months after I bought it.
 
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looks like they took the corners off the bottom and dropped it through the floor.

any pics of whats inside the tub?
 
Yep I said the same thing, I also did this modification since my TJ was a SE model it of course came with the 15 gallon tank. I did that mod about 6 months after I bought it.
Could have sworn it had different dimensions before they made EVAP changes or something from what I’ve read in the past. Im wrong, thanks for the clarification @Wildman @jjvw
 
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