BRAKE PROPORTIONING VALVE
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BRAKE PROPORTIONING VALVE
Posted: March 03 2008 11:53 PM
 
ron whipple (aka whipsold39) [ View ] [ cwhipple@qconline.com ] [ Car Ads ] [ Blogs ]
400 9th ave silvis 61282, Illinois
(309) 792-3739
 
What is the best proportioning valve to use, adjustable are the other. Do these have to be bought at the street rod speed shops are can you get them at a local parts dealer are the salvage yard. Would one off of a S10 chevy work.
 
 
Comments
 
Posted by Willys33  -  03/04/2008 12:06 AM
Now you have open a bucket of worms. Here is MY take. An adjustable proportioning valve restricts the flow of fluid thereby restricting the effectivness of the brakes. A preset valve is designed for a specific vehicle. One off an S10 will not work properly on a Yugo. Not only is the weight different but the designed function of the vehicle is different. How about a "hold off" valve for the front? Latest rage. I have tried the same brake setup on different vehicles and got different results. Bottom line is you try a setup and if it works for you then use it. When are "they" going to offer anti-skid for street rods?
Get off the trailer and drive [ View ] [ Email ] [ Blogs ] [ Car Ads ] Alamogordo, New Mexico
 
Posted by APLUS  -  03/04/2008 12:29 AM
Everyone probably has their own experience and perference with brakes but in my opinion (and I use his parts-they work) the person to contact about hot rod brakes is Ralph at E.C.I. (www.ecihotrodbrakes.com)
APLUS [ View ] [ Email ] [ Blogs ] [ Car Ads ] Austin, Texas
 
Posted by roofcam34  -  03/04/2008 01:32 AM
I like the Wilwood valve. Some of the more experienced guys here would even tell you not to use a proportioning valve. Some of the parts houses should have them.
Leo (roofcam34) [ View ] [ Email ] [ Blogs ] [ Car Ads ] Sioux City, Iowa
 
Posted by jimmothershead  -  03/04/2008 08:31 AM
$75 down the toilet for adjustable prop valves. Try to make it work. I go with preset blocks. Example: Standard IFS Mustang ll with 8 or 9 inch ford..use same OEM block or ECI unit. Don't forget the residual valves if master cylinder is under floor. 2# disc, 10# drum.
Aplus is right, Ralph Isena, owner of ECI is Mr. Brake.
Yogi's on this site has the parts.
Keep kroozen, Jim
Jim [ View ] [ Email ] [ Blogs ] [ Car Ads ] Huntingtown, Maryland
 
Posted by whipsold39  -  03/04/2008 09:41 AM
Starfire I am not asking about ABS BRAKES just the disc to drum proportioning valve. I will be runnining a 8 inch ford drum brakes on the rear with disc on the front. It is in a 1948 ford truck.
whipsold39 [ View ] [ Email ] [ Blogs ] [ Car Ads ] 400 9th ave silvis 61282, Illinois Charter Member since January 2006
 
Posted by fitzwell   -  03/04/2008 09:52 AM
Setup on the 46 is... Vette 1"m/c residual valves front & rear, an adjustable Wilwood valve in the rear. Stock MII brakes in the front, 10 inch drums on the rear. Truck squats & stops. No dive, no muss, no fuss.
normal?? Normal is a cycle on a washing machine [ View ] [ Email ] [ Blogs ] [ Car Ads ] benbrook, Texas
 
Posted by Starfire  -  03/04/2008 11:22 AM
Hey Ron...... I understand you were only looking for proportioning valve info; however, someone who replied late last night included a wish for someone to do "Anti-Skid" brakes for street rods. That particular response to you question has either been removed or modified since the time I made my comments regarding that kind of setup for street rods. Being able to modify a post way after the fact in these forums appears to be an oversight in the software or its setup. To illustrate, I deleted my post which you responded to, which of course makes your response now look like it was made by an idiot; just as the post I made appeared to you and I'm sure others as well.
Starfire [ View ] [ Email ] [ Blogs ] [ Car Ads ] Weimar, Texas
 
Posted by dixie  -  03/04/2008 02:36 PM
HEY WILLYS I GOT ANTI SKID ON MY CARS 0N THE 32 & 68 PLUS I HAVE TRACTION CONTROL ALSO.



DIXIE----ONE STEP AHEAD I THINK
jim grace [ View ] [ Email ] [ Blogs ] [ Car Ads ] dade city, Florida Charter Member since January 2006
 
Posted by ronhotrod  -  03/04/2008 08:11 PM
A combination metering/proportioning valve comes on most new vehicles since the addition of front disc brakes. not to over simplify but refresh (perhaps) what each does is in order. You should do 60/75% of your stopping with the front brakes. Therefore the fronts need more pressure, hence the smaller lines to the front. The rear uses a larger line which in and of itself reduces the pressure.

An adjustable valve is to be installed in the rear line to reduce the pressure to the rear so that the front brakes do their job. A combination metering/proportioning valve not only splits the intake lines (from the master cyl) into the front two and one rear line but also meters the pressure to each. Anytime a master cylinder is placed beneath the floor residual check valves need to be installes to prevent fluid 'bleed back' to the master cylinder which would lead to excessive pedal travel on the next brake application. Jimsnicecar is correct as to a 2lb to the front brakes and 10lb to the rear. This keeps light pressure applied and stops all the fliud from returning to the master cyl. If you use an under the floor unit all you need is a proportioning valve and residual valves. If you are using a firewall mount, use the combination valve without the residual valves. As to if you can buy the proportioning valves at your local parts house, yes you can. They are sold either drum/drum, disc/drum, or disc/disc.
ronhotrod [ View ] [ Email ] [ Blogs ] [ Car Ads ] Mount washington, Kentucky Charter Member since July 2001
 
Posted by lenbeal  -  03/05/2008 12:35 PM
Pull up MASTER POWER BRAKES, read their info on Valves and why. Then make your choice. Disc on front and drums on back need 2 different residual valves. Next to cooling brakes are not where you want to skimp on.. They are also very helpful over phone.


www.mpbrakes.com
flyingb [ View ] [ Email ] [ Blogs ] [ Car Ads ] harrogate, Tennessee
 
Posted by fordorfrank  -  03/05/2008 04:42 PM
I got my advice from from Ralph at ECI in Connecticut. I caught him at an NSRA event, told him what I was planning to use for brakes, and he picked out the valve I needed. Turns out it was a commercially available GM item. I seem to recall that there are two valves in brake systems - a residual valve and a proportioning valve. I think I have both in one body. Don't know how average Joe rodder would ever figure this out.
fordorfrank [ View ] [ Email ] [ Blogs ] [ Car Ads ] Melbourne, Florida
 
Posted by APLUS  -  03/05/2008 04:56 PM
fordorfrank, you're probably thinking about a combination valve like ronhotrod is talking about. It consists of a metering valve & proportioning valve along with a pressure differential switch all in one block. If Ralph (ECI) told you to use the valve, I bet it works because he's the man when it comes to brakes. Also when you use his parts you can buy most of the replacements locally if ever needed.
APLUS [ View ] [ Email ] [ Blogs ] [ Car Ads ] Austin, Texas
 
Posted by whipsold39  -  03/05/2008 09:53 PM
Thanks guys for all the information. I will be going with the two residual valves with the adjustable proportioning valve instaled in the rear line. The master cyl. and booster are under the floor. THANKS AGAIN.
whipsold39 [ View ] [ Email ] [ Blogs ] [ Car Ads ] 400 9th ave silvis 61282, Illinois Charter Member since January 2006
 
Posted by JAWS  -  03/06/2008 12:21 AM
Ron (whipsold39), I wanted make sure you are not under the impression that there is an out of the box setup for your vehicle. Especially when using the adjustable prop valve, they do work but you will have to fine tune the system through trial and error. I'm sure you already know this though, just said it for my peace of mind.


Besides the trial and error part is fun.....


-Brant
An electrical headache can make a great car a pain [ View ] [ Email ] [ Blogs ] [ Car Ads ] Boise, Idaho Charter Member since August 2004
 
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