Wilwood BBK
I used the 3 day weekend to install my Willwood big brake kit with polymatrix pads. I got this kit several months ago, but had some problems getting the right Motive brake bleeder kit for the Fiesta ST. The correct numbers are 1108 or 1118 for the kit or just the adapter. The instructions that come with the Wilwood kit are good, but the photos are really small. There are very few bolts that need to be removed from the OEM brakes to allow for the installation of the BBK.
This is what the brake kit consists of:
Two rotors
Two rotor hub
Two calipers, one LH and the other RH
Two rotor "shims" that go underneath the rotor on the hub
Two hub to caliper brackets
Assorted fasteners to mate the rotor to the rotor hub. These are star fasteners, so you will need a good T40 wrench. I used a 3/8" drive for my torque wrench, and various sockets for attaching the brackets, the calipers. I used a 1/2" torque wrench for these larger bolts. Wilwood provides the torque requirements for these fasteners.
Important, you will need a 1/4" and 5/32" combination wrench to bleed the front and rear brakes. I also purchased a gemini brake bleeder bottle, but you could use an empty soda bottle. I also had a 1 liter can of Dot 4 ATE blue brake fluid. You will need a tygon tube to assist in bleeding the brakes.
Taking the OEM brakes off is really easy, especially since you won't need to put them back on. I removed the bolt for the slider pin, and this allowed me to rotate the caliper out of the way. The pads either stay in place or come along for the ride.
There are two bolts on the backside of the hub which connect the caliper to the hub. Remove these and the caliper bracket comes right off.
There is a 10mm bolt holding on the brake line to the strut. Remove this bolt and set it aside. I placed the caliper on a box to relieve the strain on the brake line.
Now, this is important, get a piece of hose that will fit over the hard brake line BEFORE you unscrew the hard brake line from the soft brake line. I used a piece of tygon tubing with a rubber plug on the end of it. You do not want to lose too much brake fluid, especially since as fluid goes out, air can get in.
There is a forked brake clamp that holds the OEM brake line to the frame. It has a hole at the end. I used a screwdriver and pair of pliers to remove it. The OEM caliper is now removed. I put it and its brother aside, inside of a plastic tray to allow the brake fluid to come out. Do not get brake fluid on your paint. If you do, rinse it with clear water. I used Isopropyl alchol, as it will cut the fluid faster when it get on the floor.
Getting your rotors off requires a dead blow plastic hammer, with lots of rotation.
You need to assemble your rotors. The hard part is torquing the star fasteners to connect the hat to the rotor. I placed masking tape on the rotor hat (to protect it from scratches) and placed it on the hub so that the hat faces the hub, and the fasteners can now be torqued to 25 ft-lbs in a star pattern. I placed a large screw driver into the rotor and rested the end on my knee, to prevent the rotor from turning. I assembled both rotors this way (Sorry, no pics).
I found that the OEM shield interfered with the rotor, so 3 screws and it was off. I also cleaned the hub and made sure there were no burrs and that the rotor fit flush against each hub. I used an angled air grinder with scotchbrite pads to clean up this surface of the hub.
Next place the bracket on the hub, making sure you have the bracket nuts that protrude out of the bracket facing the rotor. Fasten these on, making sure there is a flush fit, then pull one bolt at a time, apply red loctite, and torque these down. I believe its 70 ft-lbs, but I don't have the installation pamphlet with me, as I write this.
Then the adapter (centering device) is placed between the hub and the rotor, and the rotor is placed on the hub. There are no circlips to hold the rotor. Wilwood suggests using three wheel nuts, but I found that if you use a couple of washers between the rotor hat and the wheel nuts, it holds down the rotor fine.
There is a LH and a RH caliper, You will know that you have installed the correct caliper if the largest caliper piston is located at the lower part of the caliper as installed. You will need to add shims to center the caliper on the rotor. I used one .032 shim on each bolt for the passengers side, and two .032 shims on the drivers side for each bolt. Again, you pull each bolt, one at a time, apply red loctite, and torque them down, I believe its 40 ft-lbs.
Then the hardware for the brake line needs to be assembled. Using hydraulic wrenches, put the line together so that it resembles the OEM line. There is a brass 90 deg fitting that attaches to the back of the caliper. Attach the pipe thread end to the caliper, and the hydraulic fitting end to the line that came with the kit. There is a bracket that comes with the kit to allow one to attach the brake line to the strut. It comes with a grommet which needs to be forced around the brake line. I used a copper tube slightly larger than the line, and using lots of silicon lube (you can also use vaseline), forced the rubber grommet over the line and onto the center of the line. Then I slipped it into the bracket, and fastened it onto the strut.
The part of the brake line that fits to the hard line next needs to be assembled. Once this is assembled, insert the fitting through the bracket, and using the supplied forked clamp, attach this line to the frame. I used an 11/16 wrench to hole this line while I attached the hard brake line to the hose.
Bleeding the brakes, even with a Motive bleeder requires several stages to get a hard pedal.
I recommend bleeding all brakes. I start with the drivers side rear caliper, then to the passengers side rear caliper. Move over to the passenger side front caliper, and then the drivers side front caliper. Open each bleeder valve once you have a plastic tube over the end, and this tube is immersed in brake fluid. Open each valve, then close it after a few seconds, then reopen it and repeat until no bubbles of air are coming out. In my case, I still had to have my daughter in the car, with the engine on, pressing down on the brakes while I bled the brakes (after the 2nd Motive bleed) to get all of the air out. Put your wheels back on, torque the wheel nuts to 100 ft-lbs, and go for a ride to bed your brakes.
These Wilwood brakes are indeed a step up from the OEM brakes. I hope the polymatrix brake pads do not dust up as much as the OEMS.
I ordered a set of pads for the rears from Rockauto, but they still have not arrived. I may cancel the order and purchase some aftermarket ones.