Need to replace Gas Tank in 88

[Luvtohunt]

Need to replace the gas tank in my 88 MJ. Its a 4 wheel drive long box with the 6 cylinder inline engine. Any advice or specifics I should know?

 

Thanks again.

[Eagle]

You can order new ones through the parts chains or any radiator shop. Should cost you around $150. The longbed had two capacities -- you might as well get the large one, since the price will be the same.

[Pete M]

If the J-bolts and straps are all rusty and crusty, I'd get new ones and just cut the old. :thumbsup:

[Hawk]

I have an extra sitting here from a short box, but shipping it would probably prove more of a headache then you buying a new one.

Are you close to StL, MO?

[Pete M]

Used gas tanks are notoriously difficult to ship (being hazardous cargo). Also, I'm not sure if a shortbed tank will easily swap to a longbed. :hmm:

[Luvtohunt]

Used gas tanks are notoriously difficult to ship (being hazardous cargo). Also, I'm not sure if a shortbed tank will easily swap to a longbed. :hmm:

 

 

Is there a difference between the long and short box tanks?

[Pete M]

Shortbeds only had an 18 gal tank. Longbed had either the 16 gal or the 23.5 gal (which in the later years became standard)

[Luvtohunt]

Shortbeds only had an 18 gal tank. Longbed had either the 16 gal or the 23.5 gal (which in the later years became standard)

 

 

Will a short bed tank fit a long bed?

[Pete M]

I do not know. :(

[Eagle]

Shortbeds only had an 18 gal tank. Longbed had either the 16 gal or the 23.5 gal (which in the later years became standard)

 

 

Will a short bed tank fit a long bed?

Not without modifying something. The tank for the SWB chassis was designed to fit the SWB chassis. It is a different size than the tank for the LWB chassis.

[cherokee]

If I remember correctly the SWB used two retaining straps and the LWB used three. I would guess the strap indentations won't line up if you try to switch the two.

[whowey]

If you have the big tank... drain it before trying to take it down...

 

That was a suck experience... 100+lbs dropping on my head.....

[FxRacing282]

If you have the big tank... drain it before trying to take it down...

 

That was a suck experience... 100+lbs dropping on my head.....

:doh: :popcorn: :rotf:

[Deleted user]

not to jack the thread but since I'm doing the same thing what is with the skid plate bolts being bolted to a nut in the channel under the bed. and what in the world do you do when the bolt free spins. no way to get a wrench at the other side without cutting open the bed??? :fs1:

[MJ300]

not to jack the thread but since I'm doing the same thing what is with the skid plate bolts being bolted to a nut in the channel under the bed. and what in the world do you do when the bolt free spins. no way to get a wrench at the other side without cutting open the bed??? :fs1:

 

Ran into the same situation a few days ago, take a grinder of some sort (even a dremel) and put two cuts in the shape of a "+" into the head of the bolt. Then take a big chisel and hammer and knock the crap outta it until the head of the bolt flies off.

[JeepcoMJ]

Shortbeds only had an 18 gal tank. Longbed had either the 16 gal or the 23.5 gal (which in the later years became standard)

 

 

that's odd.

 

when I could fill my tank (before sending unit started leaking) I could put 21 gallons in it easily.

[mvusse]

My 23.5 gallon tank took almost 26 gallons on the first fill up after installing it empty.