does the pump reach the bottom wells floor level? or did you employ pickups in them?
Jeep TJ rear wheelbase stretch with existing Rubicon Express long arm kit
- Thread starter paulrobbyn
- Start date
In a CJ there is/was plenty of room for a moderate 4 or 5” stretch. That was all that was needed. As I mentioned, any profile can be made to accommodate a TJ’s needs. It’s all math and engineering. It looks like it has already been done on existing tanks by modifying. Why not a full build tank for the stretch? Looks like that aluminum tank was new anyway. For someone willing to buy new, I would think a ready to go option would be easier after the initial R&D
I used a pair of 3" x 8" Holley Hydramat pick-ups in the sumps.
A stretch tank can't address what needs to happen to the suspension. On mine, I already did a ~2" front stretch and I ended up cutting the upper spring seats off the frame to move them too. Doing similar on the rear on a 5-6" stretch would be a hack job without a back half frame kit. But why not use the frame I already have and leave it all attached. Everything is much easier and cleaner without having to figure out how to hang a gas tank in there.
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So, you want to stretch the frame to stretch the wheel base. When you do that, you shorten the amount of frame left under the body in which to place a fuel tank behind the axle. So...an interior fuel tank (or cell) becomes the only option? Am I following along properly?
This is a crazy idea...but if you stretch the frame between the axles...is there room for a side saddle tank? There isn't anything running down the driver's side but the fuel and brake lines You've moved the upper CA mount back in the stretch, giving you more length. I don't have the jeep in my driveway right now to make measurements...so I'm kinda talkin out my butthole right now.
I can barely get a muffler under there with where the control arms are. A small gas tank that fits would be really small.
i just did that dance yesterday, angling the muffler between the drive shaft and upper link.
idk, where Blaine's tank sits is above the E brake bracket if 1 didn't mind breaking that hard corner from bed to rear floor and rebuilding it as shelf, the tank he showed could sit deeper or hold more volume.
you can get about 2.5" and leave the E brake bracket alone.
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You'd be better using the packaging the band-aids came in. Something thin and flimsy. Use the pinky band-aids to stick that wrapper around three sides of the wound so air can get out but not in... wait. You weren't serious. Carry on.
Ah, I see it now. Thanks. Great idea to use that space behind the font seats.
Ohh
If you ever need a 3D map of the areas where you need a tank to fit, even if it comes up dry, it sees areas that we cannot. I know someone with such machine. They can even make the tanks when done in small batches. I know you were looking to dump some more money on bulk projects……..
The tank was designed with the idea that if one wanted a very large amount of extra capacity without taking up a large amount of cargo space, it could be done. If you extend the tank back and cover the entire cargo floor back to the tailgate, that nets 5.6 gallons per inch of depth. A 2" tall tank would get you 11 more gallons of fuel added to the 18 that is there would be almost 30 gallons. Add some internal ribs and it would easily support any cargo most would carry. That could be optimized even further by converting to non flip and fold seat bases and extending the sumps under the seats between the base sides for another 3 gallons.
This one is not optimized for volume at all. My goal was anything over 15 gallons. Once I got to that with my rough calculations, I quit.
i had similar thoughts of something in the 3" range ribbed internally like you said, so it could be baffled and hold weight, covering the whole bed area and then have an appendage that overhung and used the depth of the passenger foot well for the OE pump and a deep sump. couldn't find anybody local to build it. or anything i else i came up with.
i wern't tryin to say yours could have or needed to be improved, it's slick as is and i dig the use of the Holley mats. i just thought i caught that someone was lookin for ideas.
When I do mine, I'll be shooting for at least 19 gallons, which means it will extend slightly more into the back than what Blaine came up with. I've also been thinking about a storage shelf on the top. And maybe even something shallow below the floor where the factory tank used to be.
Lift up lid over the storage I created over the area that the top of the OEM tank occupied. Screwed a piece up to the bottom of the frame for the floor and closed off the front straight up.
Why lose the storage in the cargo area? Extend them under the seat bases and go even less into the cargo area.
The storage on top is practically mandatory. You would be silly not to protect the wiring and fuel lines with a cover of some sort. The cover becomes the floor of the cargo area on top of the tank. Basic front and back rails complete it.