Category Archives: 1979 DJ-5G Dispatcher Jeep

New Tires and Wheels

The Jeep needed new tires bad. The ones it came with where dry rotted, leaked, and even one exploded on the previous owner with it just sitting in there driveway!

What to get? Well I want to keep the look of the Jeep as stockish as I can for the wheels and tires. These Jeeps had really thin tires and wheels.

Here is what the factory service manual said the Jeep came with. Tire size is E78 x 15 and Wheels are a 15″ 5.5″ K.

Well these are not modern sizes at all! But this makes sense. These jeeps came with bias ply tires with tubes.

Lets try to find new wheels first. The bolt pattern on these Jeeps are 5.5″ x 5 pattern with a 4.25″ center bore. Common CJ Jeep pattern so that is good. Width is 5.5″ and 15″ diameter. The wheels the Jeep came with fit the Jeep but are actually 6″ wide. I know its only 0.5″ but i want to keep it skinny wheeled. I also don’t know what “K type” is as well? I have found some links on some old forums about the different type of wheels Jeep had but the link was dead.

I found this seller on Ebay that has original reproduction wheels for CJs that are 5.5″ wide and are for tubeless tires. Perfect!

Now on to the tires. E78 x 15 is an old school bias ply tire size.

This chart says the tire should be around a 6.4″ wide tire. Modern size says P205/70R15.

The modern tire is ~27″ diameter and ~8″ wide. That is way to wide! No wonder the turn stops on this jeep where jacked way out. The wider modern tires where rubbing at full steering lock.

I looked at some CJ-5 forums for tire sizes and found that 7.00-15 bias ply tires fit well and look the part. I found a set of Power King Extra Traction – Lt7.00x-15 on ebay.

These tires are a bit taller then the stock ones that came on the DJ Jeep but atleast they are near the same width and look the part.

Here is how these 7.00-15 bias ply tires stack up next to my TJ Jeep’s 35″ x 10.5″ tires.

After mounting the tires and setting the pressure in the tires. 18psi in the front and 24psi in the rear.

Tires and wheels look great on the DJ!

With the proper width of the tires, I adjusted the steering stops as far inwards as I could. Sometime in this Jeep’s previous life, someone welded the adjuster nut to the bolt so I could only adjust it so far. These are 3/8-24 fine thread bolts so next time I am at the hardware store I will pick up some so I can gain even more turning radius.

Fuel Tank Adventure

The previous owner of the DJ jeep mentioned that water kept getting into the fuel tank. This will be fun to get working. A flat blade screwdriver and a hammer tapping on the fuel sender locking ring and we can get a look inside.

This fuel sender looks like it was on the Titanic.

That is a lot of rust inside the tank :(

The tank dropped out with the removable of 6 bolts and tons of dirt and rust.

I took the fuel tank straps off and pulled the tank off the skid… The skid has traces of old gas and varnish on it… Not a good sign for the integrity of the tank.

Filling the tank with water confirms my fears. The tank leaks.

I could try repairing the tank by removing all the rust and applying a liner but I think I am going to change to a CJ-5 Jeep Tank. Some searching online shows this won’t be a direct swap but it I should be able to make it work.

I ordered the following:

  • MTS Company 0051 Fuel Tank
    • Fits the 1978-1986 CJ Jeeps
    • This is a plastic tank that fits CJ-5 and CJ-7 Jeeps
  • Omix-Ada 17724.09 Fuel Pickup and Sender
    • OE Reference: 5357373K
  • Crown Automotive J5357023 Fuel Tank Skid
    • My original skid does not fit the CJ-5/7 plastic tanks
  • Spectra Premium ST60 Fuel Tank Straps

Tank assembled with the new sending unit, tank straps, and skid. I added some 1/16″ thick rubber between where the metal contacted the plastic tank.

The skid needed some trimming and holes drilled to make it fit the DJ frame and cross members. The tank and straps did not need to be modified.

One of the problems with this tank is that it moves the sending unit. Not a problem for the wiring and fuel hoses but the access panel for the sender doesn’t line up anymore. Not a problem for a angle grinder though.

I cut the access panel large enough to access the new location of the sending unit and then riveted in some aluminum strips so I could screw down an aluminum plate to cover the hole.

Still need to see why the fuel gauge doesn’t work but the sender works and the tank hooks up to the stock filler hoses for this 1979 DJ.