Technical Disc Brake Conversion Help

I installed a used disc brake conversion kit on my '62 Chevy C-10. The kit did not come with a master cylinder. I heard that you can't use an all drum master cylinder on a disc/drum setup. Is there a junkyard master cylinder I can replace it with? Or possibly just installing a proportioning valve? My issue is I have a manual transmission with a hydraulic clutch that uses the same master cylinder.

 

Power brakes? Manual brakes? Do they recommend a master?

 

Try one of the C10 boards.

 

Theoretically, you can use your single circuit drum brake master cylinder.....with a minor modification.
Not that I necessarily recommend that. But, the main difference between a drum master and a disc version is the integral residual pressure valve (RPV). On a master cylinder from the era of your truck, that is incorporated in the front of the piston ***embly. It could be removed and the appropriate RPV plumbed in for the front ( 2#) and rear (10#) brakes after the tee fitting.

The second issue would be having sufficient master cylinder volume for the disc brake caliper volume.
That may, or may not. work out. Lastly, you do not have the advantage of dual chamber master cylinder to improve the safety of you system.

In order to deal with all that, you could replace your existing tandem master cylinder with separate brake and clutch master cylinders. That might require some pedal arm modifications to change the spacing to accommodate separate master cylinders.

Ray

 

I do not know what the kit recommends. I didn't get any literature with it. I do not even know what brand it is. I was thinking maybe seperating them out and using a '70's truck master cylinder.