Prop Valve Setup Kit for FJ40 (74+)
Brake Booster, Master Cylinder & Wilwood Proportioning Valve
with Red Line Land Cruisers Prop Valve Mounting Bracket with Pin-Depth Pre-Adjustment
If you are installing disc brakes and/or larger tires on your Toyota Land Cruiser, you will need to consider your braking system as well. Now would be the time to upgrade to a larger brake booster and master cylinder for the extra stopping power! A disc brake conversion and larger tires actually need a larger brake booster! Remember, FJ40’s came stock with an H78x15 tire which is roughly a 28″ tall tire – 235/75/15. What size tires are you putting on your FJ40? Hopefully nothing larger than 33X10.50’s! Why? Give our “The Perfect Wheel / Tire / Suspension Package for your FJ40 / 40-Series Toyota Land Cruiser Build” blog post a read!
If you are adding disc brakes to your FJ40 and looking to maximize braking power, the RLLC Prop Valve SetUp Kit will complete your braking system upgrades. Tired of Fred Flintstone’ing your Land Cruiser to a stop? With a larger Brake Booster, 1″ bore Master Cylinder and a Wilwood Prop-Valve, you can maximize your “foot effort” at the pedal.
The Brake Booster is a dual-diaphragm design, larger housing with more vacuum to give better “pedal-feel” and more “Arnold-power” without having to Schwarzenegger your brake pedal. Like Wesley Snipes say’s, “Always bet on black!”
NOTE: The Brake Booster’s adjustable push-rod must be adjusted to the Master Cylinder’s plunger.
The 1″ Bore AISIN Master Cylinder – FJ80 Non-ABS, With Reservoir. This AISIN M/C features a 1″ piston that is larger that your stock 7/8 – 13/16 shaft, equipped with residual valves for both front and rear disc brakes. This Master Cylinder can be used with disc or drum brakes. Includes reservoir. This Master Cylinder is a must if you want to get the full potential use of your rear disc brake conversion.
NOTE: Must adjust the Brake Booster’s push-rod to the Master Cylinder plunger to perform correctly! Even if you are simply swapping in a new Master Cylinder to the old Brake Booster, it still needs to be adjusted to precisely mate the Master Cylinder to the Brake Booster.
The new generation Wilwood Adjustable Proportioning Valve combines the latest refinements to deliver precise pressure metering and strength from a compact forged billet design. They let you adjust brake bias quickly and easily to compensate for different brake setups, trail conditions, or different tire combinations. Pressure adjustments range from 150-1200 PSI and provide for a maximum decrease of 57% in line pressure, the most of any available valve. Adjuster knob with fine thread tuning provides precise pressure adjustment. This adjustment lets you fine tune the front to rear braking balance by proportionally decreasing the rear brake line pressure. Valves weigh only 5.2 ounces and have two .25” side mounting holes spaced 1.00” apart. This valve varies from our standard Knob Style Proportioning valve, as the inlet and outlet ports are 10MM X 1 bubble flare seats and do not require tube nut adapters to directly install tubing with bubble flare 10MM x 1 nuts.
The Prop Valve only adjusts brake line pressure to the rear brakes.
To Adjust the Prop Valve, screw the adjustment knob all the way out to start/check your starting point. According to the knob indicator, this provide the least amount of brake line pressure to the rear brakes. We now have a starting-point to dial in rear brakes. From our experience, we dial in  full rotations of the knob (clockwise). This should be a good starting point and may require a “controlled environment” stopping test.
Last but not least, our kit includes StopFlex DOT APPROVED Steel Braided Hose (DOT 571.106) assembled specifically for brake lines by incorporating a special three-layer design made with a Teflon PTFE core (liner) followed by the stainless steel braid and a clear vinyl outer cover. This design provides a superior strength and virtually no volumetric expansion to aid in eliminating the spongy pedal feel while providing greater braking efficiency. Replacing original equipment rubber hoses with StopFlex stainless steel braided hoses will increase braking performance by doing away with the soft spongy brake pedal. Rubber hoses expand, with the approximately 1200 psi. generated under hard braking. STOPFLEX = firmer pedal + more control!
What makes a hose D.O.T. compliant?
The Department of Transportation (D.O.T.) developed a set of standards, FMVSS # 106 (Federal Motor Vehicle Safety Standard), to which all flexible hoses must perform without failing under extreme conditions. In order to be compliant the hose must pass multiple tests including the “whip” test. StopFlex hoses 3-layer design has passed these DOT testing conditions.
RLLC Prop Valve Setup Kit Includes:
• Brake Booster
• 1″ Bore Master Cylinder
• Wilwood Proportioning Valve
• RLLC Mounting Bracket + hardware
•  StopFlex DOT Approved steel braided hoses (DOT 571.106)
•  fittings
• Pin-Depth Pre-Adjustment
SOLD WITH PRE-ADJUSTMENT: Red Line Land Cruisers adjusts the Brake Booster to Master Cylinder for you.
WARNING: Brakes are the single most important system in your vehicle, always consult with a specialist when upgrading anything to your Land Cruiser braking system. It is the sole responsibility of the person installing any brake or suspension component or kit for that particular application. If you are not sure how to safely use this brake / suspension component or kit, you should not install or use it. Do not assume anything! Improperly installed or maintained brakes and or suspension components and systems are dangerous. If you are not sure, get professional help. You may obtain additional information and technical support by calling Red Line Land Cruiser at 719.638.2003, emailing us at “firstname.lastname@example.org” or visiting our website at RedLineLandCruisers.com – Use of Red Line Land Cruisers technical support does not guarantee proper installation. YOU, or the person who does the installation must know how to properly use this product. It is not possible over the phone or email to understand or foresee all the issues that might arise in your installation.
Automotive equipment brakes and suspension must be maintained and should be checked regularly for fatigue, damage and wear.