Converting to Manual Brakes?

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Converting to Manual Brakes?

Post by Iguy on Thu Nov 08, 2018 4:57 pm

Has anyone converted from power disc/drum brakes to manual disk/disk brakes? †What setup did you go with as far as master cylinder (bore size), brakes, prop valve, etc? †
Iíve been looking at this caliper setup, a 2 piston replacement for stock front rotors and would get a similar disk conversion setup on the rear. †I donít really need huge rotors and 6 piston brakes for what I am doing.
https://www.summitracing.com/parts/wil-140-11291-bk

Also looking at this Wilwood master cylinder with prop valve but not sure what bore size to use.
https://www.summitracing.com/parts/wil-261-13269-bk

Or this unit looks nice too.
https://www.performanceonline.com/Disc-brake-Master-Cylinder-Proportioning-Valve-Kit-Aluminum-Hybrid-Type/

Iíve talked to Wilwood techs and they say you should have at least 6:1 ratio on your pedal for manual brakes. †On my brake pedal the current post that the push rod connects to for power brakes looks like it is about a 3:1 ratio and the hole above it would be around 4:1 for manual brakes, does that sound about right? †The pedal length is roughly 12Ē, the manual hole is 3Ē down and the power hole is about 4Ē down, giving me those ratios.

Iím also replacing all of the brake lines with NiCopp instead of steel, anyone used it? And flex lines to braided stainless.
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Re: Converting to Manual Brakes?

Post by Joe73 on Thu Nov 08, 2018 5:49 pm

Would an original manual master work for you? Our cars did come with them.
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