Another Blazer brake question

1

1KWIKSIX

Apprentice
Jun 26, 2017
89
120
33
#41
Longroof79,
install some residual pressure valves in your brake lines and your troubles will be over!
Install a 2# in the front brake line and a 10# in the rear brakes (if using drums) and your pedal travel will be reduced significantly.
These need to be installed as close to your brake's master Cylinder as possible
Take it from me.....I just went thru this on my set up!

residual-pressure-valves-jpg.99410
 
Last edited:
Longroof79

Longroof79

Geezer
Oct 14, 2008
9,588
5,246
113
Gainesville, Fl
#42
Longroof79,
install some residual pressure valves in your brake lines and your troubles will be over!
Install a 2# in the front brake line and a 10# in the rear brakes (if using drums) and your pedal travel will be reduced significantly.
These need to be installed as close to your brake's master Cylinder as possible
Take it from me.....I just went thru this on my set up!

View attachment 99410
Thank you for that information. I don't know how I missed this. So, you've installed these residual pressure valves right at the master cylinder between the lines and the master? Interesting.
 
1

1KWIKSIX

Apprentice
Jun 26, 2017
89
120
33
#43
Thank you for that information. I don't know how I missed this. So, you've installed these residual pressure valves right at the master cylinder between the lines and the master? Interesting.
Yes indeed, brakes work fantastic
LMK if you’d like a picture
 
TURNA

TURNA

Geezer
Jul 24, 2009
5,378
6,396
113
Socialist NY
#44
Longroof79

Longroof79

Geezer
Oct 14, 2008
9,588
5,246
113
Gainesville, Fl
#45
Yes indeed, brakes work fantastic
LMK if you’d like a picture
A few pics( and part #'s) would be much appreciated...thank you! ...and thank you for the suggestion.
Would these residual valves emulate using an adjustable proportioning valve? Just curious.
 
Longroof79

Longroof79

Geezer
Oct 14, 2008
9,588
5,246
113
Gainesville, Fl
#46
Last edited:
64nailhead

64nailhead

G-Body Guru
Dec 1, 2014
788
845
63
Upstate NY
#47
Longroof79,
install some residual pressure valves in your brake lines and your troubles will be over!
Install a 2# in the front brake line and a 10# in the rear brakes (if using drums) and your pedal travel will be reduced significantly.
These need to be installed as close to your brake's master Cylinder as possible
Take it from me.....I just went thru this on my set up!

View attachment 99410
Please describe the parts in your brakes including master and proportioning valve.
 
1

1KWIKSIX

Apprentice
Jun 26, 2017
89
120
33
#48
Please describe the parts in your brakes including master and proportioning valve.

Wilwood 1-1/8" Master cylinder (260-8556-BK) with adjustable proportioning valve 260-13190
https://www.wilwood.com/mastercylinders/MasterCylinderProd?itemno=260-8556-BK
https://www.wilwood.com/mastercylinders/MasterCylinderProd?itemno=260-13190

Tallon Hydraulics (Vintage Speed Reaper) HydroBoost brakes

Wilwood 10lb residual pressure valve for rear brakes (installed downstream of the adj. proportioning valve) about 1" below
https://www.wilwood.com/MasterCylinders/MasterCylinderProd?itemno=260-13784

Wilwood 2lb residual pressure valve for front brake lines (installed downstream of the adj. proportioning valve) about 1" below
https://www.wilwood.com/MasterCylinders/MasterCylinderProd?itemno=260-13783

I'll post some pics tonight of the residual pressure valves

Removed the factory G body brake proportioning valve
ran 3/16" brake line to transition to 1/4" ? (might be larger than that) rear line that exited from the now removed factory proportioning valve which was located on the underside of frame

Also installed larger 7/8" rear brake cylinders from manual brake S-10 and (4) larger leading brake shoes in the rear

wilwood1-jpg.101182
 
Longroof79

Longroof79

Geezer
Oct 14, 2008
9,588
5,246
113
Gainesville, Fl
#49
Thanks for sharing the pic and the information..plus what you've done with your brake system... That's a nice clean setup. (y) Well executed.
I like how you plumbed the proportioning valve just below the master cylinder like the earlier A-body cars.
So, the residual valves are installed below the proportioning valve.
 
Last edited:
1

1KWIKSIX

Apprentice
Jun 26, 2017
89
120
33
#50
Thanks for sharing the pic and the information..plus what you've done with your brake system... That's a nice clean setup. (y) Well executed.
I like how you plumbed the proportioning valve just below the master cylinder like the earlier A-body cars.
So, the residual valves are installed below the proportioning valve.

Yes , you are correct. I ran some short lengths of 3/16" brake line and coiled them to allow for any movement which could take place, then plumbed in the residual pressure valve . The residual pressure valves are recommended to be installed as close to the master cylinder as possible.
 

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