Sep 25th, 00, 12:40 PM
I have done a search and read a lot of the replies to similar questions but I am still not satisfied about what I should order.
Here is my situation
Converting from Manual Drums to Manual Discs (original GM disc setup of a 71 Tempest)
I will be autocrossing so it would be nice to be able to have some adjustment. I know I need some sort of residual proportioning valve too. And to top it off I would like to use a lighter master clyinder if there is one that will bolt on.
I am not afraid of running my own break lines.
Ok guys lets hear what you have and pictures would be great too.
355 TFS Heads
99 Formula 6spd
Sep 28th, 00, 06:33 AM
When I put disc brakes on mine, all I needed was a new master for disc brakes and an adjustable proportioning valve. You just mount it in between rear brake line and your old distribution block under the master cylinder. It requires maybe 8-10" extra brake line. Or you could just get a combination valve which has the proportioning valve inside the distribution block (but it's not adjustable).
Sep 28th, 00, 09:38 AM
Here's some info.
The valve with the rubber tip is called a metering, or hold back valve. It prevents pressure from going to the front discs until a line pressure of over 40lbs is reached. It takes about 40 lbs to overcome the rear drum brake return springs. The metering valve prevents the front brakes from grabbing first, under light pedal applications.
Most diaphram type pressure bleeders are limited to pressures below 40 lbs, so the button disables the metering valve, allowing the low pressure to go to the front discs.
If you are manually bleedng the brakes, you don't need to fool with the button, you can easily make over 40psi with foot
On First Gen Camaros, the metering valve is a separate round valve mounted just below the master cyl. The rubber tip end is
facing the booster. I have seen some stick shift Camaros without this valve.
On later GM cars and trucks the valve is a combined, METERING, PROPORTIONING, AND BRAKE WARNING SWITCH. It is
then called a Combination valve.
If you want to try and get by without the Metering valve, try an adjustable proportioning valve in the rear brake line.
If you have grabbing of the front brakes, install a Metering valve in the front brake line.
Check my web page for First Gen Camaro suspension info:
David's Motorsports page (http://ourworld.compuserve.com/homepages/David_Pozzi/)
First Gen Suspension Page (http://ourworld.compuserve.com/homepages/David_Pozzi/first_gen_suspension.htm)
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