What type of braking valve do I need???
#629312
03/02/10 11:02 PM
03/02/10 11:02 PM
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Joined: Aug 2003
Posts: 438
Florida
440charger70
OP
super street
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OP
super street
Joined: Aug 2003
Posts: 438
Florida
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I am finishing up on my power brake conversion and about to install a Wilwood adjustable proportioning valve. The car has front Wilwood Discs and rear drums. I will be driving this 440 Charger daily in Florida and have heard that the proportioning valve may not be the best for such changes in condition year round (hot, cold, wet, dry...) as I will have to constantly adjust it. Not exactly what I am looking for... I read up on metering, residual and combination valves and am more confused on what I need than when I started. I am looking for the valve that will require the least amount of maintainance and give me the best performanc on a front Disc - Rear Drum set up? Thanks for your help! 
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Re: What type of braking valve do I need???
[Re: 440charger70]
#629314
03/03/10 12:00 AM
03/03/10 12:00 AM
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Joined: Jan 2003
Posts: 70,126
Here
DirectSubjection
Tacohead. The First and Only
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Tacohead. The First and Only
Joined: Jan 2003
Posts: 70,126
Here
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I have the same set-up on my Duster. I put an adjustable prop valve on, set it, and have not touched it since.
Ride eternal, shiny and chrome
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Re: What type of braking valve do I need???
[Re: 440charger70]
#629315
03/03/10 02:03 AM
03/03/10 02:03 AM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Might start w a stock Charger disc/drum prop valve along with plumbing in the aftermarket adjustable one in the rear line. A prop valve would reduce fluid to the front discs either by the "metering" or "holdoff" function part of the combo valve until the rear drums make contact to keep from excessively wearing out the front pads though people smarter than me have used/recommended only the rear line adj aftermarket prop valve but the stock prop valve would also give you the brake warning light if half of the system develops a leak. And I used the orig drum/drum splitter in my 65 dart when I added 73 A body discs (& 10" rear drums) w no issues including excessive wear but I drive easy around town and never any panic stops have I had to make (front pad wear is negligible also) w semi met pads
live every 24 hour block of time like it's your last day on earth
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Re: What type of braking valve do I need???
[Re: 440charger70]
#629316
03/03/10 04:16 PM
03/03/10 04:16 PM
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Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
Lefty
master
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master
Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
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Quote:
I am looking for the valve that will require the least amount of maintainance and give me the best performanc on a front Disc - Rear Drum set up?
A combination valve is what you need. 
MPBrakes and Summit both have quality combination valves in my experience. I would not install the Wilwood adjustible unless you test and find you need it. Most disc/drum setups will not. 
The proper way to test is panic stops in a wet parking lot AFTER the combination valve is installed. If the back end wants to come around add the Wilwood adjustable in the rear line.
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Re: What type of braking valve do I need???
[Re: Lefty]
#629317
03/03/10 08:57 PM
03/03/10 08:57 PM
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Joined: Dec 2003
Posts: 22,783
Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,783
Bitopia
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Quote:
Quote:
I am looking for the valve that will require the least amount of maintainance and give me the best performanc on a front Disc - Rear Drum set up?
A combination valve is what you need.
MPBrakes and Summit both have quality combination valves in my experience. I would not install the Wilwood adjustible unless you test and find you need it. Most disc/drum setups will not.
The proper way to test is panic stops in a wet parking lot AFTER the combination valve is installed. If the back end wants to come around add the Wilwood adjustable in the rear line.
Sorry I strongly disagree with the above. What the OP seems to want is "peace of Mind". Ignorance usually gets that result. No braking bias is seldom right for more then one speed, car weight load, pavement surface, weather condition, tire temps, pad compounds, etc. An adjustable valve gives you options, depending on your ability and effort to adjust. A stock valve with an aftermarket disc brakes gives you one shot at getting lucky. Do you feel lucky?
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: What type of braking valve do I need???
[Re: 440charger70]
#629320
03/11/10 09:05 PM
03/11/10 09:05 PM
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Joined: Sep 2003
Posts: 1,688
Marlboro, NY, USA
Rick_Ehrenberg
top fuel
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top fuel
Joined: Sep 2003
Posts: 1,688
Marlboro, NY, USA
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Don't forget that prop valves don't "cut in" until there's a few hundred PSI. The upshot: They don't do much on low-friction surfaces (rain, snow) where the pedal / line pressures are low. And locked rears in the rain can be real nasty.
Better to get the proportioning close by juggling caliper / wheel cyl. bore sizes first, then use the valve for fine tuning.
As was mentioned, put 6 cases of beer in the trunk and proportioning requirements change. That's why those height (and, effectively, load) sensing valves from minivans and trucks of the '80s were a great idea.
Another reinforcement point: Fronts must ALWAYS lock first. Preferably, just barely. A car with rears locked MUST and WILL spin!
Rick
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