The Toyota Land Cruiser FJ40 is one of the sturdiest short wheelbase 4WDs on the trail.  You don’t see them much, but when you do, they certainly stand out.  Something else that really stands out about them is how poorly the brake system works, especially when you are trying to control oversized off-road tires.

The 1970 Toyota Land Cruiser came equipped with 4 wheel drum brakes—pretty low tech by today’s standards.  Most late-model vehicles are equipped with front disk brakes and rear drum brakes.  Some late model trucks and SUVs even have factory rear disk brakes.  We usually find 4-wheel disc brake systems on off-road race cars, race trucks and purpose built rock crawlers.  It’s this race technology that we want to tap into for our trail rig.

THE FIX

To help out the old Papa Smurf Cruiser, we decided to upgrade the front 1960’s drum brakes to something more current—power disc brakes.

Front brakes in a vehicle generally work harder than the rear brakes.  The front brakes control about 80% of the stopping , while the rear controls about 20%.   Trucks, 4x4s and SUVs have the engine and transmission in the front half of the vehicle—so you really need your stopping power up front.

I talked to some Toyota guys about front disc brake conversion for these early Land Cruisers.  I was told that an early 1980’s Toyota 4WD pick-up front-end would be the way to go.  The knuckles and disc brakes would swap with my FJ40—later I found out about all the extra modifications involved, including having to re-spline the axles.  That might not sound too bad, but finding an early 80’s donor Toyota pick-up isn’t quite easy these days.

I kept looking for a better solution.  Finally, I found a company that had an out-of-the-box solution that would work with my Toyota Land Cruiser front axle.  JT Outfitters out of North Carolina has developed a new off-road disc brake kit for the 1970 – 1975 Toyota Land Cruiser that works on FJ40/FJ45/FJ55 (part# TLCFDB870975). 

Their kit runs about $549.95 for the complete set-up.  This is a really good deal, especially when you factor in that you are getting all new components and custom brackets.

GM single piston calipers are used as part of the disc brake conversion.

The JT Outfitters disc brake conversion kit includes:

2 – disc brake conversion brackets (the most important piece)
2 – disc brake rotor
2 – disc brake caliper assembly
2 – disc brake pads set
2 – disc brake line
*all necessary hardware is included for installation

I finally saved up enough money and ordered the disc brake conversion kit from JT Outfitters.  The sales and tech people were very helpful with answering questions.  They even gave me some advice on the installation and getting the front to rear brake ratio dialed in.

We tackled this project on a weekend—a father & son effort.  The old parts came off pretty quickly, as if the Cruiser was giving us a break.

Here’s what you do for the disc brake conversion:

• Remove the front locking hub cover and remove the axle snap ring.

• Remove brake drum.