Residual valves help?

[Belvy]

So heres what I did. Four wheel drum 1963 Sport Fury booster went bad. $250ish to rebuild so... I bought a booster/master combo for a four wheel drum 67 Charger for $100 new so I could also get the dual reservoir. Changed the pedal rod to match length and brake switch end for my Fury. Bled it out and it stops good but the pedal is low, not to the floor but just lower than the gas pedal while stopping. Sits up normal otherwise so I know its not pedal rod or master rod length issue. Ive seen some chatter about residual valves during dual res master swaps which are unfamiliar to me, I mean I understand how they work, just wanting some advice on them as most of what I see about them is refering to disc master swaps. Just curious if they might help. Thanx for any help.

 

[440roadrunner]

If the master you have is actually drum and not disc, it has valves in the master outlet fittings.

What is the bore size of the two? If the newer one is smaller, that would account for "more pedal"

 

[miller]

Since your still running drums all around, low pedal could be from the brakes needing adjusted.

 

[Belvy]

The masters are both 1" bore size. I think there is more travel in the dual one though, i mean it looks longer. Ill check it all out and let yall know what I find out. The pedal was pretty high with the old setup, just the booster started leaking.

 

[Belvy]

Well... its the simple things. Low pedal was from the front adjustment. Never checked the adjustment as the pedal was pretty high with the old setup, but the pedal was hard as hell with the dead booster lol. Rookie mistake for seasoned brake guy. Good call Miller

 

[440roadrunner]

Well... its the simple things. Low pedal was from the front adjustment. Never checked the adjustment as the pedal was pretty high with the old setup, but the pedal was hard as hell with the dead booster lol. Rookie mistake for seasoned brake guy. Good call Miller

Unfortunately, sometimes I figure you guys check "the simple things." Easy fix, GREAT!! LOL

 

[miller]

Glad you got her fixed.

 

[Cranky]

When I installed a dual master on my 66 Belvedere, the bore was a bit smaller which induced a bit more travel but less effort. Just had to make sure the brakes stayed adjusted out. Good deal on the easy fix!