Rear discs and factory combo valve ???'s

[disco stu]

I am putting rear discs on the car and was wondering how to remove the preset residual pressure valve and limiter in the combination valve for rear drums.

 

[LV GN]

hey--i have the wilwood stuff to put on the back of my car. i took the drum set off this car and peice together to get that stuff we talked about on my kids car. so with installing the dics on my car. i read you just tee into the brake lines and by pass the valve altogether or i have read about taking the guts out of the valve. eather way i think you need to get an aftermarket(wilwood?) proporsioning valve for the rear brakes. i would like to know more about this. i wont finsh mine till after the first of the year.

 

[Louie L.]

By pass the POS factory valve all together. Its the best thing i did to my car. I T'd off the fronts and straight to the rear with an adjustable valve. I have aerospace rear disks on mine with factory fronts.

 

[disco stu]

So you are running front and rear brakes off the primary circuit?

Ya got some pics maybe?

 

[sixgun86gn]

I have no info,but I am interested in this too.

 

[Louie L.]

The Powermaster was hooked up just like factory. Front to fronts and backs to backs. I just eliminated the combo valve at the frame rail. I needed 2 metric adapters for the stock lines and a plain old brass T for the fronts.

Same thing for the back brakes with one port in the T plugged. This line has a SSbrakes adjustable prop-valve.

maybe this will help:

 

[bruce]

Just a thought, but with no pressure differential switch, I hope your master cylinder has a low fluid sensor.

 

[LV GN]

not really on subject-- but close-- is a nice article that bruce wrote on t6p. i was thinking of going to manual brake's on my car.

http://www.t6p.com/forums/showthread.php?p=79379#post79379

 

[disco stu]

Here is another possible option.

http://search.ebay.com/search/searc...trt=1&ftrv=1&saprclo=&saprchi=&fsop=11&fsoo=1

 

[bruce]

Here is another possible option.

http://search.ebay.com/search/searc...trt=1&ftrv=1&saprclo=&saprchi=&fsop=11&fsoo=1

Without knowing what the matching M/C (or application) is, it'd only be guessing that you'd get what you want.

Contrary to what he says, the *metering* valve is on the rear brakes.

The metering block in disc/drum is slightly delay the pressure to the rear brakes, in a drum application the drums have a self energizing effect, and if they were feed *straight pressure* they'd lock up first, which is very unstable. That's also part of the reason for 1/4" line to the rears, it allows for a slight cushioning of the rear brake application.

 

[disco stu]

"I see" said the blind man.


Thanks, learn something new everyday. Well, here a least.