MIATA BIG BRAKE KIT INSTALLATION INSTRUCTIONS

This kit should be installed by someone familiar with typical brake systems. I cannot stress the importance of safety enough. Mark all bolts that have been tightened fully with a paint marker. Triple check all fittings for leaks. Use LocTite on all bolts that don’t have lock nuts. I recommend draining all the old brake fluid and starting with new DOT 3. It is a good idea to check the stock wheel to caliper distance before complete disassembly. If the distance is less than ¾” there is a chance spacers will be needed.

1.) Park car on flat surface, e-brake off, in neutral and wheels blocked. Brakes should be cold. 2.) Loosen lug nuts on passenger side, front and rear. Do not remove them. 3.) Place Miata jack in between front and rear wheels directly below rear view mirror. 4.) Raise entire side of car so front & rear tires can be removed. 5.) Remove lug nuts and wheels. 6.) Remove caliper. Save mounting bolts for attaching adapter bracket. Remove rotor. Support caliper so it doesn’t hang from hose. 7.) Remove the e-brake cable. This will attach in the same way on the RX-7 caliper.

8.) Trim metal shield and flatten for disc clearance. Trim end tabs for caliper clearance. You can also remove the shield completely if you want ( this is what I do)

You will have to clearance shield from disc by rotating disc and pounding shield away.

9.) Attach aluminum disc adapters to disk using the bolts and lock nuts supplied in kit.

Attach disc adapter with the 6 -5/16” X 1” bolts and lock nuts provided

10.) Install aluminum caliper adapter plate using the two bolts you just removed.

Note that shield has been trimmed to clear caliper

11.) Inspect the RX-7 calipers for damaged seals and replace if necessary. I recommend rebuilding the caliper if there is any sign of leakage. Some calipers come with steel shim mounting spacers. These can be discarded. If you use paint, make sure it is high temperature paint. 12.) Remove caliper from base. The piston must be depressed completely in order for the pads to fit around the vented rotor. Rotating the piston clockwise will do this. Needle nose pliers can be used as the rotating tool if the piston is loose, otherwise, you will need a rotating tool from the auto parts store. Depress the piston fully using a c-clamp. The slots on the piston face must be in line with the pin on the back of the pads. 13.) Attach the caliper base to the adapter plate using the bolts and spacers supplied and check rotor to base clearance.

14.) Attach the caliper to the base with new pads installed. Review photos to assure proper configuration.

Rear caliper base and spacer placing

15.) Attach the brake line using the same hardware. 16.) Re install the e-brake cable. 17.) Open the bleeding valve that faces forward until fluid flows out. Bleed the caliper using your preferred technique. I recommend bleeding the brakes several times after the job is complete to insure no air bubbles.

18.) Remove front caliper and rotor. Support caliper so it doesn’t hang from hose. 19.) Install rotor and adapter assembly onto hub. Fine tune shield clearance. 20.) Apply Teflon thread sealer to brake fitting supplied and screw into caliper just snug. 21.) Install aluminum adapter plate and caliper to upright using the bolts and spacers & lock washers provided. The lock washers provide additional spacing need for bolts to clear rotor. 22.) Tighten the brake fitting so it is facing up. 23.) Attach brake line using the stock hardware.

24.) Repeat these steps on the drivers side. If you need to adjust the e-brake cable, the adjusting screw is on the handle. You must remove the plastic cover.

Kit not DOT approved for street use. Use at your own risk. BIG BRAKE PARTS LIST

PARTS INCLUDED IN KIT

FRONT HARDWARE:

2- ALUMINUM DISC ADAPTERS 12- 5/16” X 3/4” SAE DISC TO ADAPTER BOLTS 12- 5/16” LOCK NUTS 2- ALUMINUM CALIPER MOUNTING ADAPTER PLATES 4 - 3/8” X 1 ¼” SAE CALIPER TO ADAPTER BOLTS 8 - 3/8” LOCK WASHERS (BOLT SPACERS) 2- BRAKE HOSE FITTINGS

REAR HARDWARE:

2- ALUMINUM DISC ADAPTERS 12- 5/16” X 3/4” SAE DISC TO ADAPTER BOLTS 12- 5/16” LOCK NUTS 2- ALUMINUM CALIPER ADAPTER PLATES 4- .450” ALUMINUM CALIPER SPACERS 4- 10 X 1.25 X 30MM. CALIPER TO REAR STEEL ADAPTER PLATE

PARTS NEEDED:

SUMMIT RACING PART NUMBERS.

2- WILWOOD FRONT CALIPERS # WIL-120-5005 4-VENTED 11” ROTORS # WIL-160-5840 2- SETS OF STREET OR RACING PADS

2- MAZDA 2ND GEN. RX-7 REAR CALIPERS 2- SETS OF STREET OR RACING PADS

SOURCE FOR HIGH PERFORMANCE BRAKE PADS:

ESSEX PARTS SERVICES INC. (770) 889-4096 WWW.ESSEXPARTS.COM

WILWOOD CALIPERS: HIGH PERFORMANCE STREET- HAWK# HB100.F.480 RACING- BLACK COMPOUND - HAWK # HB100.M.480

RX-7 CALIPERS: HIGH PERFORMANCE STREET- HAWK# HB158.F 515 RACING- BLACK COMPOUND - HAWK # HB158.M.515