I threw my back seat out the day I bought the TJ, and there's all this empty space in the back there. Instead of cutting the floor and raising the gas tank through, I was thinking about just yanking the tank off and bolting it to the rear floor of the Heep. Anybody do it this way, any pointers? Obviously I will have to reroute the filler (or just fill it up through the gate) Any difference between a fuel cell and a tank, other than baffles and location?

a racing fuel cell might be a better idea. www.summitracing.com they are notched for tie down straps and stuff.

It may be better, but I was hoping to work with what I got on the Heep now...unless having a gas tank in the back there is really unsafe. I mean, I would vent it outside:D

Seen a few guys on here do just that no problems. Use the search I know the info is out there.

i raised the the stock gas tank on my 72 cj5 so that half is above the floor and the other half below..while is work and i didnt have to spend $200 bucks on a fuel cell i dont think i would do it again..
mainly because it is hard to get the tank filled all the way i. I ran the filler neck straight out the side much like on a tj..but there was little slope in the neck. this also was a lot of work. I suppose that it would be cheaper for u to retain your factory fuel pump and sender but i think i would still save up for a good fuel cell. But i would still cut out the floor and drop it down so the bottom of the cell is flat with the bottom of the frame rails. then u can make some kind of rack over the tank and not lose as much storage. my .02$

My brother has done exactly that with his 90 YJ. I went the other route and wacked the floor out to make room for 26 gal. flush with the frame and a set of shock towers to hold 14 in. Fox s. Both work well, neither will ever hold a back seat again, mine still works well with top (no fumes due to a new raised floor). You can see them both a www.rockskullz.com. Look under Tony or matts jeeps.

I trashed the gas tank in my TJ for a fuel cell from Triangle engineering,all aluminium tank. now i don't have to worry about smashing it. the only thing is on TJ's(along with most efi vehicles) the gas cap is non-venting and instead of a breather the tank has a small hose that runs to the fuel cannister so you"ll need a fuel cell with 3 outlets. mine still gets fume-e inside even with a closed system.

Just use the stock tank for now, if you don't like it or it doesn't work then get a fuel cell. My Jeep's going to be a trail only rig with no top so I'm not worried about fumes, but I just unbolted the tank or the skid plate I should say and just threw it in the back. The tank is strapped down in the skid plate, and the flanges of the skid are perfect to run rails to so I can mount it in the back, hardly any fab. work at all:D I'm just going to cut a small hole in the floor to run the hoses, plus I going to mount the filler next to the drivers door on the side. I can see how you could have a problem with not getting the tank full because of the angle but that's because of the pumps at the gas station and if you cann't figure out how to fix that problem then I cann't see how you could figure out how to put the tank in the back in the first place :flipoff2:

Originally posted by Braden Willard
I trashed the gas tank in my TJ for a fuel cell from Triangle engineering,all aluminium tank. now i don't have to worry about smashing it. the only thing is on TJ's(along with most efi vehicles) the gas cap is non-venting and instead of a breather the tank has a small hose that runs to the fuel cannister so you"ll need a fuel cell with 3 outlets. mine still gets fume-e inside even with a closed system.

Aftermarket pump I presume?

I just finished doing this last night. My tank is a plastic one, its grounded from the sender unit to the body. All plastic fuel cells have to be grounded also, so I don't see how this is any different.
I'll probably eventually go with a fuel cell, but for now, this is it.

Another shot:

Originally posted by OTTERGONEJPN
But i would still cut out the floor and drop it down so the bottom of the cell is flat with the bottom of the frame rails. then u can make some kind of rack over the tank and not lose as much storage. my .02$

I am not really worried about storage. I never leave tools or anything of that sort in the Heep and when wheeling and/or camping, I just take the minimum (tools or gear). So, taking the tank off and just mounting it in the bed would be ideal, but as others have said, I's still be faced with venting issues? There's the out line (to the FI) and then there's the "return", right? Plus the vent line as well, which goes to the charcoal cylinder thing under the hood. So where else can the fumes be coming from?

rkcrawl, thanks, that's exactly how I pictured mine would be! 'cept now I see how it would really stick out...I think if I am gunna stick with the "virgin" floor in the back there, I may have to invest into a somewhat flatter cell, with thicker top and bolt THAT down to the bed floor (and use the cell top as the bottom for the tool box or whatever)

Any "fuming" issues, or do you not even have the top for that thang?:D

Originally posted by JPrush

Any "fuming" issues, or do you not even have the top for that thang?:D

Top? Whats that? :D Seriously all I ever used to run was a bikini, doors and windjammer. I just put fuel back in the tank last night so I can't answer the fuming question right now.

Originally posted by Jayrockn7
Just use the stock tank for now, if you don't like it or it doesn't work then get a fuel cell. My Jeep's going to be a trail only rig with no top so I'm not worried about fumes, but I just unbolted the tank or the skid plate I should say and just threw it in the back. The tank is strapped down in the skid plate, and the flanges of the skid are perfect to run rails to so I can mount it in the back, hardly any fab. work at all:D I'm just going to cut a small hole in the floor to run the hoses, plus I going to mount the filler next to the drivers door on the side. I can see how you could have a problem with not getting the tank full because of the angle but that's because of the pumps at the gas station and if you cann't figure out how to fix that problem then I cann't see how you could figure out how to put the tank in the back in the first place :flipoff2:

its not that i cant fix...knuckle head,,i just have no need, so what if i only have 12 gallons..i was trying to help someout with what may want to consider when doing something like this..when i did my tank i was trying to make it a tad bit nicer than the butchery u described above

Originally posted by GDGMOJO


Aftermarket pump I presume?
Mallory fi pump with flat bottom tank bolted to the floor. the only holes i drilled was for the lines.

Outlaw Jpr on this board has a TJ and he is raising his tank right now. Here is a pic of his progress.

http://a9.cpimg.com/image/A9/AA/13456809-8355-028001E0-.jpg

Originally posted by Braden Willard

Mallory fi pump with flat bottom tank bolted to the floor. the only holes i drilled was for the lines.

What is the required pressure on a TJ?

I called the chrysler garage and they told me around 40psi. so i got a regulator and set mine to 42psi to be safe and maybe gain a little if i need to stand on it.

i did the same thing with my tj... i have alot of pics but can't post them... goto www.ollllo.com and look for it, it's on there. send me an e mail and i'll send some some pictures.;)

I went with a cell, half in half out. Gained 9" of clearance and gained 5 gal capacity.
Oh yeah and an F-150 rail pump.

just in case, that write up on ollllo is in the features archive... lets see if this works.....http://www.ollllo.com/features.asp?Display=61 this is it, just copy and paste. i'm sure there is an easier way, but i'm very impatient with these machines:flipoff2:

hmmm, never mind, just click it:D

http://www.ollllo.com/images/features/gastank/image011.jpg


...and I will probably end up throwing the spare tire in there too (tie it ghetto style with ratchets or something, right on top of all this) As far as the filler, I've got a hard top, so the filler will have to stay inside, and I ll lay off :smokin: crack for the time being

Originally posted by doctor_G
I went with a cell, half in half out. Gained 9" of clearance and gained 5 gal capacity.
Oh yeah and an F-150 rail pump.

AHHH I recall hearing of that "Ford Pump"
Cheap and easy very nice.
Any certian year or application on the rail?

Nice Leaf springs on the TJ :flipoff2:

Originally posted by TTURokToy
Outlaw Jpr on this board has a TJ and he is raising his tank right now. Here is a pic of his progress.

http://a9.cpimg.com/image/A9/AA/13456809-8355-028001E0-.jpg

Originally posted by jeepbrew
Nice Leaf springs on the TJ :flipoff2:



Yeah, nuthin like Rancho 44044 springs pushin a 14-bolt back about 6.5" on the back of a TJ! Too bad there's not a driveshaft on there.

Chuck

that's nice a 14-bolt sprung under, nice rock anchor you got there:flipoff2:

Guess we'll have to see about that. Too bad there's not more rocks around here to find out for sure.

Chuck

i raised my stock gas tank 11 inches and built a 1x1 frame and covered it in aluminum diamond plate http://www.imagestation.com/picture/sraid23/pac6b2b65981c14e5ae9f08ef3b647302/fda46cfa.jpg rest of the pics are here http://www.imagestation.com/album/pictures.html?show_all=1&start=1&id=4291726463

If you plan to keep the jeep street legal, make sure you check your local laws first. Fuel tanks within the passenger compartment are a no-no in some states.

Originally posted by newt
If you plan to keep the jeep street legal, make sure you check your local laws first. Fuel tanks within the passenger compartment are a no-no in some states.

That is a good point. But should be workable... box it up like some of the other examples here and it should be all set.

Originally posted by TTURokToy
Outlaw Jpr on this board has a TJ and he is raising his tank right now. Here is a pic of his progress.

http://a9.cpimg.com/image/A9/AA/13456809-8355-028001E0-.jpg

OK I'm still trying to figure this one out. It is a TJ with leaf springs in the rear spring under with blocks which lower the jeep. Huh...someone want to explain this

Originally posted by CA_YJ


OK I'm still trying to figure this one out. It is a TJ with leaf springs in the rear spring under with blocks which lower the jeep. Huh...someone want to explain this

Uh, look close, they aren't blocks but self made spring perches, that happened to start as tube.

Why is this hard for yall to grasp... I TJ does not come with leaf springs... why would somebody want to do a leaf conversion on a TJ and leave if spring under...


Lucy you gots some esplaning to doooo....

Originally posted by TPIJeep
Why is this hard for yall to grasp... I TJ does not come with leaf springs... why would somebody want to do a leaf conversion on a TJ and leave if spring under...


Lucy you gots some esplaning to doooo....

It is not hard to grasp, I guess I just don't get going from coils to leafs in the back. If you are going to change the rear suspention and leafs will probably cost you around 200 for good ones why not suck it up and spend a bit more for coilovers. But whatever.

Originally posted by TPIJeep
Why is this hard for yall to grasp... I TJ does not come with leaf springs... why would somebody want to do a leaf conversion on a TJ and leave if spring under...


Lucy you gots some esplaning to doooo....

Here we go agian ;-)
1. We get just as much flex with leafs.
2. Less moving parts means less to wear out or come loose we have a his and hers TJ household dealing with CA all the time was a pain.
3. (This is the biggie) No more funny handling issues on and off road. Ever get a TJ with the front tires over a ledge only to have it lift the drivers side front when the rear hit, it's called High CA angles equal intersting results.
Now on the flip side when it came to fairly flat rock strewn areas the coils worked great but on the big climbs with ledges and stuff wow very very thrilling to say the least.

The soft coiled front with a stiffer rear works great much better than it did with the basic 4" or 5" lift.
btw we went SOA I never liked SUA much but it really works for some folks to each his own.

GDGMOJO - is this Sheldon?

I wanted to go SOA but with the 44044's I got for the rear, it was looking like this.......

http://a7.cpimg.com/image/CF/DD/13252047-64df-028001E0-B.jpg

Those are 38.5 SX's and the axle is a 14-bolt. As you can see, I still had to lift the rear another few inches to get the tire mounted. I'd rather be much lower, like it is with the SUA set-up.

http://a1.cpimg.com/image/B7/26/13286071-339a-028001E0-B.jpg

Never know...... I might go SOA with stock-style Waggy springs later.

Chuck