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  #1  
Old April 29th, 2019, 13:45
RCP Phx RCP Phx is offline
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98 ZJ gas tank in a 2K XJ

I picked up a gas tank from a ZJ. I've read all the threads but never saw anyone measure the XJ tank vs the ZJ. I plan to deal with the vent but the fuel pump is what I'm concerned with. The ZJ tank measures 9-3/4" from the fuel pump flange to the bottom.
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Old April 30th, 2019, 07:33
RCP Phx RCP Phx is offline
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Re: 98 ZJ gas tank in a 2K XJ

What about a good brand of fuel pump? Does the small vent go to the evap system?
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Old April 30th, 2019, 09:58
Rockwood Rockwood is offline
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Re: 98 ZJ gas tank in a 2K XJ

Did a Bosch pump in my XJ (with XJ tank), no problems.

I do have a ZJ fuel tank skid on mine, and when I removed the pump that came with it, the assembly said "ZJ" on it, so I think you'll be okay.
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Old April 30th, 2019, 10:04
RCP Phx RCP Phx is offline
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Re: 98 ZJ gas tank in a 2K XJ

Unfortunately the Bosch is no longer available!
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  #5  
Old April 30th, 2019, 11:36
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cal cal is offline
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Re: 98 ZJ gas tank in a 2K XJ

I followed Mark's lead and did the AEM pump. It's technically a performance upgrade (higher volume) but I figured it was probably also higher quality.
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Old April 30th, 2019, 11:51
RCP Phx RCP Phx is offline
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Re: 98 ZJ gas tank in a 2K XJ

I need the whole assembly as I'm trying to put this all together ahead of time so it is "plug-n-play".
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Old May 3rd, 2019, 05:40
RCP Phx RCP Phx is offline
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Re: 98 ZJ gas tank in a 2K XJ

While nobody has responded back on the tank measurement, I did find something from one of the manufacturers. The XJ pump measures about 12-1/4" in O.A.L. so I am assuming it's the sane as a ZJ pump. I'll know more when I receive one. Right now I just need to choose a brand, I'm leaning towards Carter or Delphi as they seem to be the best of the available choices.
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Old May 3rd, 2019, 09:50
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lazyxj lazyxj is offline
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Re: 98 ZJ gas tank in a 2K XJ

Rock Auto show this Bosch pump as being OE for a 1998 ZJ.
It would be my choice

https://www.amazon.com/Bosch-67649-O...Grand+Cherokee

Interested in see how this works and the actual dimensions, hoping I can fit one with the gas tank skid. An extra 5-gallons of fuel would would be useful, eliminating having carry extra fuel on the desert trips.
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Old May 3rd, 2019, 10:23
RCP Phx RCP Phx is offline
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Re: 98 ZJ gas tank in a 2K XJ

The electric plug(67649) won't fit a 2000 and I want to stay "plug-n-play". I will take measurements of everything as I go along. I did order a Delphi pump and I do have a factory skid plate
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Old May 5th, 2019, 13:52
RCP Phx RCP Phx is offline
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Re: 98 ZJ gas tank in a 2K XJ

We'll I got the tank done today. Since there is no adhesive that works with HDPE I took extra cautions. I was lucky to find a PEX stub ell that was the perfect length once cut down. Besides extremely rough sanding, I also cut annular and linear grooves in both the plastic and the copper. That along with proper cleaning, I used JB weld so I don't believe it's going anywhere.

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Old May 6th, 2019, 09:34
RCP Phx RCP Phx is offline
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Re: 98 ZJ gas tank in a 2K XJ

The fuel pump depth is a mute point. I just received my pump and realized that it is spring loaded! I'll also get my SS hose quick adapters today but I won't get my lock ring till Thursday. Does anyone know what the lock ring torque is?
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  #12  
Old May 6th, 2019, 10:03
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lazyxj lazyxj is offline
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Re: 98 ZJ gas tank in a 2K XJ

From the 2000 XJ FSM.

"Fuel Pump Module Locknut . . . 74 Nm (55 ft. lbs.)"

Not having a lock ring wrench that can be connected to a torque wrench, I spin the ring on and use a homemade spanner wrench to to get it good and tight.
Be careful to keep the rubber ring in position when tightening.
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01 Sport, Russ Pottenger 4.6, AW4, 4" lift, 33 X 10.50 KM2, 4.56-8.25 TruTrac, D-30-E-Locker with alloy shafts, Hidden M8000 winch, Vanco front and ZJ rear disc brakes, Frame stiffeners, Lots of armor, Towing baseplate. http://www.flickr.com/photos/lwade/c...7603770130683/
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  #13  
Old May 6th, 2019, 10:07
RCP Phx RCP Phx is offline
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Re: 98 ZJ gas tank in a 2K XJ

New issue, I ordered my fuel fittings based on the ones I used on the fuel rail redo in front and they were 5/16". I'm measuring the one on the new pump and it is a 3/8". I don't know where they made a transition but I would need to re-order some fittings.
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Old May 7th, 2019, 14:13
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MichXJdad MichXJdad is offline
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Re: 98 ZJ gas tank in a 2K XJ

Possibly after the filter?
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  #15  
Old May 7th, 2019, 14:35
RCP Phx RCP Phx is offline
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Re: 98 ZJ gas tank in a 2K XJ

The only filter on a 2000 is in the tank. Had a look at it last night and ordered some new fittings.

Right now I'd like to know any tricks on getting the pump in. I envision using a dental pick/o-ring tool to get it started?
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