ok this is the situation, the purchase this firewall mounted booster master kit, here it is http://www.piratejack.net/Power-Bra...rake-Pedal-Conversion-Kit-Firewall-mount.html i ran all new lines 10lbs residual pressure valves in in each front wheel and one for the back, the line on the front is split with a "T" and one line going to the back, i bleed the master a few times no air bubbles, the problem is that the pedal is supper spongy and im barely getting any fluid going to the back. any one got any ideas on what to do? thanks in advance this is the power brake kit this are the residual valves
why did you use residuals? are your brakes drum/drum or drum disk? if drum drum you should not need the residuals. if drum/disk you will need a proportioning valve
Dude you don't need the residule valves if the master is above the calipers/wheel cylinders. You only need a prop/combo valve.
im pretty sure you only need residual valves if the master cylinder is mounted below the calipers or drums. (JAWS beat me to it)
10# valves, and you have three of them total? with a firewall system, its not needed, but i can see it. i have em on my 52. is this a drum/drum setup? if its disc in front... 10#?
forgot to add that its a drum/drum. the reason i used the valves is becase the guy from pirate jacks said i needed them here is was i found in the piratejacks site Drum brakes require a 10 lb. residual pressure (RPV10) to counteract the spring tension in the drum system which tends to pull the shoes away from the drums. This will give you a longer pedal travel and "spongy" brakes. The residual valve holds a pressure keeping the shoes near the drums giving a higher firmer pedal. Also required a metering valve (PVM) to the front (the metering valve prevents nose dive).
the only reason you need residuals is if the master is below the floor.if it's above the wheels on the firewall,you don't need the valves at all.
Depends on the valving in the master. How do I put this, um, some don't apply the front and rear at the same time.
You dont need the residual valves with the master above the wheel . And whats with the metering valve just plumbed in to the front brakes ? I know metering valves are designed to delay the front brakes for a split second ( anti dive ) but I thought front and rear needed to be plumbed into them, at least the ones I have seen. Every braking system that I have worked on , the front reservoir is for the rear brakes and the rear is for the front. But if thats what they say, than who am I to argue.