Hydro Boost Install Diagram
Nov 30, 2005 - Super Chevy technical article on installing a hydroboost on a 1968 camaro. Enough to stop the car, then the system resorts to manual brakes.
I started with the Hydratech Hydroboost kit which came complete with everything needed for the basic installation. After reading many many threads about this install, I discovered a modification which runs the low pressure return line direct to the Power Steering Pump. This eliminates a 'T' fitting in the basic kit and prevents any fluid feedback to the HB unit. Parts for that mod were Tallon Hydraulics part# 8203 (5/16-24 O-ring male to -6AN male), 2-Russell 613161 90* -6AN hose ends, Russell 670850 -6AN Fuel Cell Bulkhead fitting, Tallon Hydraulics part# 1451 2pack of 3 Hole Hose Clamp Separators and Russell Stainless Steel braided low pressure hose.
First drain the PS pump reservoir, remove old PS hoses from pump and steering box Then remove old master cylinder brake pedal rod from the brake pedal Disconnect the front and rear brake lines and remove the old master cylinder I made a new gasket to fit between the new HB unit and the firewall, I used Felpro# 3157 rubber fiber gasket material from NAPA Auto Parts. Then I installed the HB unit.
Before installing the Wilwood master cylinder, install the two high pressure lines and the low pressure return line. Installation of these hoses is nearly impossible if you install the master cylinder first (ask me how I know). Remove the preinstalled brass 90* fitting for the low pressure return port from the HB unit, and replace with the THI 5/16'-24 O-ring male to -6AN male fitting on the HB unit.
Be sure to torque ONLY to 10 ft. As the threads for this fitting can strip very easily. Use one wrench to hold this fitting while tightening the Russell part# 613161 90* hose end with another wrench. Day 2) I drilled a hole above the fluid line in the PS pump reservoir and installed the Russell #670850 -6AN Fuel Cell bulkhead fitting in the reservoir for the low pressure return line from the HB unit.
I stuffed a clean shop rag into the reservoir, spread some grease on the end of the drill bit(metal particles stick to it), and vacuumed real well with the shop vac to make sure no metal particles got into the reservoir. Then I cut to proper length, the two high pressure lines coming from the HB unit and installed the Aeroquip fittings and then installed them in their proper locations, and also installed the Russell part# 613161 90* hose end on the other end of the low pressure return line and installed that on the PS reservoir. Next, I need to fill the power steering pump with fluid, and bleed the system, checking for any possible leaks. I'll be securing the two hose clamp separators to the inner fender, I need some new hardware for that.
I also need to bend some new lines for installation of a proportioning valve and then bleed the brakes. Then a test drive!!
Jeep Hydroboost Braking System The PROBLEM: Jeeps are notorious for poor stopping performance. Then you add front discs, rear discs, larger tires, bigger axles with bigger brakes, lower gears, a bigger engine, and so on and so forth, and before you know it, the brakes become almost useless with the pressure and power generated by the original stock braking system. The SOLUTION: Vanco has devised a system that has worked wonderfully on all prototypes it has been tested on. It is a very easy to install Hydroboost system that bolts right up and uses your power steering pump, instead of engine vacuum, to provide power assist to the brakes. It can be used to convert manual brakes to power brakes, to upgrade factory power brakes, or to work the bigger brakes on that stronger axle you are swapping in. The power of the Hydroboost allows the system to incorporate a larger bore master cylinder than is possible with a vacuum assist, which produces more brake clamping pressure and, at the same time, a higher brake pedal. (Vacuum systems require about an inch and a half of pedal travel before they begin to work.) The booster is very slim, only about 4 1/2” in diameter, as opposed to the 9”-10” diameter of vacuum boosters, so, if you are concerned about spaceworry no more.
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