Just Differentials 99 Land Cruiser UZJ100 Build Thread

[Just Differentials]

This is a build that we did a few years back at Just Differentials using many parts from Nitro Gear and Just Differentials. Carl is still daily driving this vehicle and it has been driven across the state of Washington many times and even down to Moab.


JTs Super Deluxe Suspension System:

-JTs Uniball Upper Control Arms
-Old Man Emu Coil springs & Torsion Bars
-ICON 2.5†Remote Reservoir Shocks
-Diff Drop
-Timbren Front and Rear Bumpstops
-12mm BodyLift


Slee Skidplates and bellypan:

-1/4†thick, steel supports
-Front, Belly, Tcase

Custom 8†ifs & 9.5†rear diffs by Just Differentials:

-Nitro Gear 4.88 Ring & Pinions, Solid Preload Spacers
-Front ARB Air Locker
-ARB Compressor
-Rear OEM Electric Locker
-ARB Inflation Kit


Additional upgrades:

-TRD Supercharger w/ Unichip ECU
-Doug Thorley Headers
-IPF Lights
-ARB Fridge
-Slee Winch Bumper
-Milemarker 12k winch
-Slee Rear bumper
-Dual Batteries
-Factor 55 prolink


We installed our Super Deluxe Suspension System with ICON 2.5" Remote Res shocks and Uniball UCAs on this build:

You can see the difference between our UCA and the stock UCA here:

We went with 2.5" ICON remote reservoir shocks:

We had some custom NITRO skid plates made up:

Optional ICON Vehicle Dynamics Billet lower rear control arms with our suspension system:

With the addition of 35" tires Carl decided that even though he was going to re-gear the LC he also wanted to have a little more power. Enter a TRD Supercharger from an 04, and a Unichip ECU:

 

[Just Differentials]

Custom 8†ifs & 9.5†rear diffs by Just Differentials:
-Nitro Gear 4.88 Ring & Pinions, Solid Preload Spacers
-Front ARB Air Locker
-ARB Compressor
-Rear OEM Electric Locker
-ARB Inflation Kit

Some pictures from Moab:

 

[Just Differentials]

Next up was a roof rack, we went with the Gobi rack for a few reasons:

-Low profile (no higher then an OE rack w/ the Thule snowboard carrier)
-Sunroof remains fully functional via a quick release panel, actually runs as quiet as stock (if not quieter) because of the included wind fairing
-They come pre-wired for lights
-Extremely strong, didn't even bend or budge with over 200 lbs on top
-Direct bolt on to OE mounts
-Very lightweight, we have no increased body roll with the rack on top

 

[Just Differentials]

Toyota Land Cruiser 80, 100, 105 Series, 3.12:1 Low Range Transfer Case Gear Kit HF2A

These gears replace your stock 2.488:1 low range ratio with a 3.116:1 ratio! The end result is a 25% gear reduction for your FJ80, FZJ80, or 100-series Toyota Land Cruiser, which combined with your automatic transmission's torque converter, results in almost a 75% total reduction for awesome Rock Crawling. No replacement bearings, seals, or gaskets required. Installation is simple to accomplish using standard hand tools, shop press, bearing splitter, and grinder. Requires silicone, thread sealant, and replacement gear oil. Your automatic transmission fluid does not need to be changed.

Made in Japan, OE Quality. Fits all 80, 100, 105 series Landcruisers.

1 - Differential Low Speed Gear
1 - Idler Low Speed Gear

We just installed these in our 100 series before Moab last week. Results are excellent. No change is made to high range, but the heavy Landcruisers really benefit from the lower-low range.

This is a 99 so it has the 4 speed Auto, it pulls very hard on the 2-1 downshift if you stomp the throttle at say 10mph. This would cause some torque steer and have a tendency to burn off 1 front tire in loose or snowy/icy conditions. We noticed it pulled much straighter with CDL engaged. We installed the back half of an FZJ80 Transfer case to get the viscous coupler. All a direct fit, just had to shorten the driveshaft 3". Results are much nicer overall tighter feel, more controlled acceleration, much better traction in unlocked high range in snow.

 

[Just Differentials]

Thanks to our neighbor Mission Ridge Ski Area For allowing us to take some photos for the 4WD Toyota Owner Magazine Article featuring our 100 Series and BJ73 Land Cruiser build. This was last month, when we were experiencing a bit of an inversion, so it was nice to get some shots up above the clouds. Since then winter has returned fortunately.

Shown here with studded 33" winter tires, typically on 35" tires:

 

[Just Differentials]

A few pics form a recent trip to 100's in the Hills from WA State to Ouray, CO. 1 Dad, 2 kids, 1 Landcruiser & Rooftop tent, 2700 miles, 6 days! Got stuck in the sand 1 hour into the trip when dad decided the dunes would be a good place for a "quick" potty stop....

 

[Just Differentials]

A few more pics, no rubbing!