Is my brake porportioning valve bad

ken robinson · 07-13-2010, 03:49 PM

Has my 67 camaro brake porportioning valve gone bad ? All of the 4 drum brakes work and hold strong and release fine .The main problem is with line lock it just can't lock down front brakes . Put new hurst line lock in end of last year , just due to the old hurst line loc soleniod started to stick/died . It just seams like it holds at half the pressure , compaired to if you just push on the pedal and try to turn the wheels . The line lock is get full 12vdc . All line connected wright in and out . Its the only thing left . Anybody run in to this ? Ken R.

Eric Merryfield · 07-13-2010, 03:59 PM

Quote:

Originally Posted by ken robinson

Has my 67 camaro brake porportioning valve gone bad ? All of the 4 drum brakes work and hold strong and release fine .The main problem is with line lock it just can't lock down front brakes . Put new hurst line lock in end of last year , just due to the old hurst line loc soleniod started to stick/died . It just seams like it holds at half the pressure , compaired to if you just push on the pedal and try to turn the wheels . The line lock is get full 12vdc . All line connected wright in and out . Its the only thing left . Anybody run in to this ? Ken R.

On my 70 challenger its pretty similar if I don't pump the living crap out of the brakes first. Much more than the other cars(dakota and challenger09). I think you may have solved a nagging problem for me!

Eric

ken robinson · 07-13-2010, 06:18 PM

Ya thats what I've been doing just to get by . But it can push you wright out of the burn out and miss putting enought heat in the slicks . I dont think my cars got a porportion valve , I think its just a pressure switch that lights the dash light .

Tony Curcio · 07-13-2010, 06:38 PM

Your last comment is correct- drums on all four won't need a proportioning valve. Try adjusting the shoes to the point they start to drag.

FED 387 · 07-13-2010, 09:17 PM

-try adjusting shoes til they start to drag ---then when you get into the water box pump the brake pedal a few times til it starts to get hard---you'll feel it in your foot--- then with the pedal still on the brake pedal set the line loc ---then start your burn out see if this helps--worked on my 67 camaro with drum brakes--Comp

Billy Nees · 07-14-2010, 06:09 AM

Ken, have you put new lining on it lately? Did you have the new lining re-arched to the drums?

07-13-2010, 03:49 PM	#1
ken robinson Member Join Date: Dec 2001 Location: tomsriver nj Posts: 478 Likes: 74 Liked 213 Times in 85 Posts	Is my brake porportioning valve bad Has my 67 camaro brake porportioning valve gone bad ? All of the 4 drum brakes work and hold strong and release fine .The main problem is with line lock it just can't lock down front brakes . Put new hurst line lock in end of last year , just due to the old hurst line loc soleniod started to stick/died . It just seams like it holds at half the pressure , compaired to if you just push on the pedal and try to turn the wheels . The line lock is get full 12vdc . All line connected wright in and out . Its the only thing left . Anybody run in to this ? Ken R.

07-13-2010, 06:18 PM	#3
ken robinson Member Join Date: Dec 2001 Location: tomsriver nj Posts: 478 Likes: 74 Liked 213 Times in 85 Posts	Re: Is my brake porportioning valve bad Ya thats what I've been doing just to get by . But it can push you wright out of the burn out and miss putting enought heat in the slicks . I dont think my cars got a porportion valve , I think its just a pressure switch that lights the dash light .

07-13-2010, 06:38 PM	#4
Tony Curcio Member Join Date: Mar 2002 Location: West Chester, PA Posts: 271 Likes: 1 Liked 4 Times in 1 Post	Re: Is my brake porportioning valve bad Your last comment is correct- drums on all four won't need a proportioning valve. Try adjusting the shoes to the point they start to drag. __________________ Tony Curcio 1860 STK

07-13-2010, 09:17 PM	#5
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,419 Likes: 528 Liked 332 Times in 180 Posts	Re: Is my brake porportioning valve bad -try adjusting shoes til they start to drag ---then when you get into the water box pump the brake pedal a few times til it starts to get hard---you'll feel it in your foot--- then with the pedal still on the brake pedal set the line loc ---then start your burn out see if this helps--worked on my 67 camaro with drum brakes--Comp

07-14-2010, 06:09 AM	#6
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,493 Likes: 3,595 Liked 7,717 Times in 1,738 Posts	Re: Is my brake porportioning valve bad Ken, have you put new lining on it lately? Did you have the new lining re-arched to the drums? __________________ Billy Nees 1188 STK, SS I'm not spending 100K to win 2K