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Disc brake setup help
#1051700
08/12/11 08:17 PM
08/12/11 08:17 PM
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Joined: Mar 2003
Posts: 2,527
PA
moparacer
OP
master
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OP
master
Joined: Mar 2003
Posts: 2,527
PA
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The 67 Barracuda I just bought was originally a manual drum setup. It has a 11 inch factory disc conversion on the front with the slider calipers, and wilwood 4 piston 11 3/8 inch setup on the back.
Somebody had a wilwood proportioning valve on the rear brakes, and it was set almost completely off and turned in the decrease direction.
Up front they put a mopar 1 1/8 bore master cylinder and have the rear of it running to the front, and the front running to the rear brakes.
The kicker is they still have it hooked up to the factory proportioning valve on the frame.
Anyone have any Idea if this is right or not?
I have run lots of setups on drag cars but running a street setup through the factory proportioning valve is new to me.
67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
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Re: Disc brake setup help
[Re: moparacer]
#1051701
08/12/11 08:22 PM
08/12/11 08:22 PM
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Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581
master
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master
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
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FWIW... I have Wilwood HD brakes on the front of my 71 Demon with 10" B-body drums on the rear.I used a Mopar M/Cyl and I kept the factory prop valve,and never used the adjustable Wilwood part that came with the front disc kit.The car stops great,and I've had no problems.
Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
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Re: Disc brake setup help
[Re: Chris2581]
#1051702
08/12/11 08:39 PM
08/12/11 08:39 PM
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Joined: Mar 2003
Posts: 2,527
PA
moparacer
OP
master
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OP
master
Joined: Mar 2003
Posts: 2,527
PA
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Thats what I was thinking. I should be able to loose the wilwood prop valve they had on the rear. Just seemed strange that it was on the rear and almost completely backed off before... Of course, nothing else was done right on this car so there is no reason the brakes should be right either.... 
67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
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Re: Disc brake setup help
[Re: moparacer]
#1051703
08/12/11 11:08 PM
08/12/11 11:08 PM
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Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581
master
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master
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
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I didn't change the lines either.They are in the OEM ports,and I have a line lock plumbed in the system.
Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
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Re: Disc brake setup help
[Re: Sixpak]
#1051705
08/13/11 06:58 PM
08/13/11 06:58 PM
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Joined: Jan 2003
Posts: 21,085
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,085
Niles , Ohio
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Probally the dist block.Most see them and think they are a PP valve.Rocky
Chrysler Firepower
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Re: Disc brake setup help
[Re: Sixpak]
#1051707
08/14/11 12:23 AM
08/14/11 12:23 AM
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Joined: Mar 2003
Posts: 2,527
PA
moparacer
OP
master
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OP
master
Joined: Mar 2003
Posts: 2,527
PA
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I will have to snap a pic of it tomorrow.
It wasnt full open at the rear it was alost full closed.
Its a strip car I am making into a mostly street, but I will be footbraking it some.
67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
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Re: Disc brake setup help
[Re: moparacer]
#1051708
08/14/11 11:39 PM
08/14/11 11:39 PM
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Joined: Mar 2003
Posts: 2,527
PA
moparacer
OP
master
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OP
master
Joined: Mar 2003
Posts: 2,527
PA
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I checked tonight and it looks like a distribution block and not a proportioning valve.
67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
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