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Author Topic:   residual valve for drum brakes
justin
Dirt Maniac

Total posts: 167
posted August 06, 2002 04:42 PM
I was reading a post from a couple of days ago about using a 10 lb residual valve for drum brakes and it sounds like a smart idea and I'd like to try it but I'm not real sure how to go about doing it. I know it should be as close to the master cylinder as possible but what I need help with is how to go about installing one. What kind of fittings and tools would I need? I have never messed with anything like this so I need some help. I have stock brake lines on a 75 camaro with a wilwood 7/8 bore master cylinder for the rear brakes that was already in the car when I bought it. Any help would be greatly apprecieated. Thanks in advance.

Justin

snowman
Dirt Maniac

Total posts: 140
posted August 06, 2002 08:55 PM
Justin, I think once you actually see one, you will know how....just a small cylinder with an inlet and outlet.......about 2 1/2 in long......

Method 1) You have to determine the fittings required....depending on which brand you use and the line size....

Usually, You use an inverted flare fitting in both ends of the valve......then determine the length of brake line that needs to be cut......make the cuts with a tubing cutter........you will need two fittings than go on the lines....(I forget the actuall name of these fittings).....but they go on the brake line.......then you double flare that line......they then ***** into the inverted flare allready installed in the valve.........

You can purchase the double flare tool at Sears for less than 20 bucks.......instructions are included with it.

If you cannot find these fittings, you can buy a short line with the fittings on it at just about any parts store...(2 bucks).....cut it......then you have two fittings......

Method 2).......Buy the short brake line and some adapters to hook the line up to the master cylinder......then to the valve..........then......adapters to hook up from the valve to the brake line...
...........That is to say....using a short line and various fittings......do a little re-routing......you can hook it up with out cutting or flaring the lines........

There are also various compression fittings that would perhaps be easier......But I personally don't like them.....

I prefer method # 1....... whatever you choose,

Good Luck,

Snowman

justin
Dirt Maniac

Total posts: 167
posted August 06, 2002 10:04 PM
Thanks for the help snowman. I appreciate it.

Justin

awkwardjeff
Dirt Freak

Total posts: 458
posted August 09, 2002 04:23 AM
Justin, I see you stated that you run a wilwood master cylinder.....that is 1/8 pipe thread........the valve you get will also be 1/8 pipe thread........the valve SHOULD bolt right into the master, Then you will need a fitting to go from 1/8 male pipe thread to your inverted flare brake line.......SHOULD ONLY NEED TO BUY 1 FITTING.

merlinmech
Dirt Full Roller

Total posts: 51
posted August 12, 2002 04:28 PM
What is the purpose for this? Just curios, never heard of it before.

snowman
Dirt Maniac

Total posts: 140
posted August 12, 2002 05:22 PM
Merlinmech, this question stems from another thread....Read "best stock master cylinder" .......it's covered there...

Good Luck,

Snowman

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