I put disc brakes up front on my '64, do I need to run a Brake Proportioning Valve like this one to not lock up the front brakes?
http://www.summitracing.com/parts/SUM-G3905/
Brake Proportioning Valves?
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Southern64
- Posts: 182
- Joined: September 10, 2008, 10:42 pm
- Location: Chuluota, FL
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MattsIASlickShop
- Posts: 222
- Joined: July 2, 2006, 9:45 pm
- Location: Central Iowa
I didn't use one on my Uni - no issues. I am not recommending that though either. I also have ALOT of stagger in my tire sizes - may make a difference.
1964 F 100 - I am going to do "something" with it.......
viewtopic.php?f=32&t=15942
1987 Mustang LX Convertible, 2.3 Auto - cruiser.
1994 F 150 XLT 2WD
~ Yes - I adopted another cat..............
Cam L Milan,
You'll be missed my friend.
viewtopic.php?f=32&t=15942
1987 Mustang LX Convertible, 2.3 Auto - cruiser.
1994 F 150 XLT 2WD
~ Yes - I adopted another cat..............
Cam L Milan,
You'll be missed my friend.
A brake proportioning valve is a very misunderstood item. It has nothing to do with the front brakes. It functions to prevent early rear wheel lockup. The real problem is it does almost nothing 99% of the time as it really only functions during hard stops like panic stops. You can't tell if you need one just by driving around. Most people never find themselves in a panic situation so they think their brakes are working fine without the valve. The most common time to see a lack of a valve is on sudden braking while in a curve in wet weather! It becomes very obvious very quickly that you don't have a valve then! The valves should always be installed on the drum brake half of a disc/drum system and should be adjusted using a wet skid pad to test on (an empty wet parking lot is also good! LOL). Hawkrod
Some not so light but excellent reading:
http://www.stoptech.com/tech_info/wp_pr ... lves.shtml
http://www.stoptech.com/tech_info/wp_br ... ance.shtml
http://www.babcox.com/editorial/bf/bf50014.htm
I especially like the quote from this page: "The most important point to understand about proportioning valves is when they work - only during panic braking. This means that a vehicle could potentially go its whole life without ever using its proportioning valve. Think about the little old lady that drives to and from church and the grocery store. It is possible that she will never have the need to make a panic stop and therefore never activate her proportioning valve. The other half of that equation is all those who drive near her will probably get a chance to see if their proportioning valves work!"
Some not so light but excellent reading:
http://www.stoptech.com/tech_info/wp_pr ... lves.shtml
http://www.stoptech.com/tech_info/wp_br ... ance.shtml
http://www.babcox.com/editorial/bf/bf50014.htm
I especially like the quote from this page: "The most important point to understand about proportioning valves is when they work - only during panic braking. This means that a vehicle could potentially go its whole life without ever using its proportioning valve. Think about the little old lady that drives to and from church and the grocery store. It is possible that she will never have the need to make a panic stop and therefore never activate her proportioning valve. The other half of that equation is all those who drive near her will probably get a chance to see if their proportioning valves work!"
