looking for some help got a old Total performance and need to replace front brakes that are Speidel mounted and of course the old Wilwood calipers are no longer made thinking about making my own brackets and use Wilwood Dyana pro # 120-9690 the rotors are 11 X.25 The rims are Center lines but set up like a wire wheel rim was used Any input or suggestions would help
to add more info to kens post, the caliper pistons **** back into the caliper when the brake pedal is released. - yes the master is under the calipers, yes there is a 2lb residual valve. This make you have to do a 'double pedal' push to get the brakes tight for stopping. we called wilwood and their techs said the calipers being used are too small for a car, and are worn out. Not only are they not rebuildable, but they have been superseded and no longer in use at all. so, in order to fix/rebuild this brake system, we area looking for the best way to keep the look of the single small (thin) brake rotor and use a new better style caliper to do the job safely. Wilwood has a dual piston small caliper we were thinking of buying and making new brakcets to adapt them to the car, but before reinventing the wheel here we are looking for some info from fellow HAMB members to set us on the right track...
That 'thin' rotor is what complicates this... You might want to look at motorcycle calipers. Two, four and even six piston calipers for 'thin' rotors are out there although matching up rotor thickness will probably take some effort. It may be worth looking at bike rotors too. Good used sets are pretty cheap and rebuild parts are generally easily available depending on make/model. I'd lean towards the big cruisers, but the superbikes can feature 'big' brakes also.
Look at big Harley Davidson calipers. Are the rotors in good shape? Harley ( big cruiser ) rear caliper looks similar to yours , The rotors are approx. 10 1/2 inch X 0.25 thick Your bucket probably weighs not much more than a big dresser. You may have to modify the mounting brackets, or build new ones, and shim to center the calipers on the disc. It may require special hydraulic hose and fittings, but they can generally be made up locally. Check into the big ATV's (side by side) they have similar brakes. I checked into Harley brakes when I built my bucket but ended up using VW calipers
https://www.jalopyjournal.com/forum/threads/disk-brakes-for-t-bucket-spindle-mount-wheels.1325073/ Went off on a tangent here, but lots of info. Ignore my fussing.
I have the same system my Andy Brizio Instant T. I replaced my 48 chevy single master cylinder with a dual Corvette one from Speedway but I still don't get a lot of braking force with the single Wilwood caliper. Was thinking of doing disc brakes conversion on my 60 Corvette rear end might be more cost effective.
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