Hey guys, I done a frame off resto on this 50 Chevy I bought here off the Hamb. The only modern update added was power disc brakes. I still have everything under the floor and the brakes are s10 style. I added a residual valve last night and still have ZeRO brakes !! What am I doing wrong? Small booster 80's dodge master cylinder S10 brakes Stock drums on rear Thanks Posted from the TJJ App for iPhone & iPad
Did you make sure to bleed the master? Sometimes it takes a very long time. The residual valve is directional, maybe it's on backwards?
Start by checking the pushrod clearance between the booster and master. You could have the wrong master for the booster that you are running.
Yes bench bled Yes valve is correct I have checked push rod and even adjusted it. Posted from the TJJ App for iPhone & iPad
Back to basics: do you have fluid coming out the bleed nipples? Does the pedal simply go to the floor when you have bled it? I had a similar problem when I fitted a 1"Ford MC to my RPU, with discs all round. It turned out I had the wrong master cylinder, and it did not move enough fluid to fill the system, move the pads and get brake pressure on all-new parts. I swapped it for a Wilwood single 7/8" MC and got brakes ten minutes later. I personally think bench bleeding is a joke. There is no logical or mechanical reason a master cylinder needs to be put on a bench just to get the laws of physics to apply themselves. If it is sat at a stupid angle in the car, I can see the issue, but correctly mounted there is nothing it will do on the bench that cannot happen in the car.
Bench bleeding allows you to fully depress the piston to remove all of the air.....I have had to take off master cylinders and bench bleed them after they were installed as new units. What is the proper application for the Dodge master cylinder?
Had a similar issue. I went nuts trying to find the problem. I finally started breaking the lines at the master, and working my way down to each wheel, while pumping the pedal at each check. Once I got fluid moving at each point I tightened the fitting and moved to the next down stream. When I finished at the wheel cylinders I had pedal! So I bled the whole system to make sure there was no air in it, and it's worked ever since. Not sure what was causing the problem, but this fixed it for my system.
I had this problem on a 54 Chevy that a buddy put together and we had to get a master/booster combo then it worked out fine.The pushrod in the booster was not right for the master cylinder.
S-10 Brake calipers = Quick Take Up. LOTS OF INFORMATION ON THEM Make sure your calipers and master cylinder are rated for each other.
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