Wilwood W6A Big Brake Front Brake Kit - Manual (Page 3)

General Information and Disassembly Instructions
Parts List
•Installation of this kit should ONLY be performed by individuals experienced in the
installation and proper operation of disc brake systems. Prior to any attempt to install
this kit, please check the following to ensure a trouble free installation.
•Inspect the contents of this kit against the parts list to ensure that all
components and hardware are included.
•Make sure this is the correct kit to fit the exact make and model year of your axle and
wheels. This kit is designed for direct bolt-on installation to 1997 through current
model year Chevrolet C-5 and C-6 Corvette hubs, but requires minimum of 18”
diameter wheels. Check wheel clearance diagram.
•Verify your wheel clearance using Figure 2.
•Verify that the factory hub and stud pattern matches the stud hole pattern in the hats
supplied with this kit. Hubs that have been modified with different size studs or lug
patterns may require modifications to the hat that must be performed by a
qualified machinist.
Disassembly
•Disassemble the original equipment front brakes: Raise the front wheels off the
ground and support the front suspension according to the vehicle
manufacturer’s instructions.
•Remove the wheel. Remove the two bolts from the backside of the spindle that hold
the stock caliper mounting bracket and lift off the bracket and stock caliper as one
unit. If space is a problem, you may have to unbolt the stock caliper from the caliper
bracket before removal. Save the stock caliper mounting bracket bolts and washers,
they will be utilized during reassembly, then slide off the stock hat and rotor
assembly.
•Clean and de-grease the spindles as well as the stock caliper bracket bolts. Remove all nicks or burrs on the spindle snout and threads.
CENTER
LINE OF
WHEEL
.50 (12,7)
RADIUS 1.52 (38,6)
3.80 (96,5) .13 (3,3)
4.72
(119,9)
8.15
(207,0)
CALIPER
WILWOOD ROTOR
WHEEL MOUNT SURFACE
NOTE: A MINIMUM OF .080” CLEARANCE MUST BE MAINTAINED
BETWEEN THE WHEEL AND CALIPER IN ALL AREAS
1.25 (31,8) ROTOR THICKNESS
2.78 (70,6)
CENTER REGISTRATION
Figure 2. Wheel Clearance Diagram
1
2
3
3A
4
5
6
7
7A
8
9
10
11
12
2
12
2
2
2
24
24
2
24
4
4
4
16
1
250-10031
240-8969
160-9787/88
160-9762/63-BK
170-8920
240-11240
230-6737
120-11663/64-RS
120-11663/64-RSR
230-9182
240-11101
230-9080
240-3902
150-9489K Bracket, Caliper Mounting
Washer, .562 I.D. x 1.121 O.D. x .029 Thick
Rotor, SV-GT 1.25” X 14.25” Dia, 12 x 9.19” Bolt Circle (one each, right and left)
Rotor, Drilled and Slotted (one each, right and left)
Hat, 5 x 4.75, .290 Offset, 12 x 9.19 Bolt Circle
Washer, .265 I.D. x.500 O.D. x .063 Thick
Bolt, 1/4-20 x 1.00 Long, 12 Point
Caliper, W6A (one each, right and left)
Caliper, W6A, Red (one each, right and left)
Nut, 7/16-20, Self-Locking, 12 Point
Washer, .453 I.D. x .750 O.D. x .063 Thick
Stud, 7/16-14 x 7/16-20 x 3.375 long (pre installed in bracket)
Washer, .441 I.D. x 1.000 O.D. x .016 Thick
Pad, BP-20, Axle Set
ITEM NO. PART NO. DESCRIPTION QTY
NOTES:
Part Number 230-4572 Rotor Bolt Kit, includes part numbers 230-6737 and 240-11240
Part Number 250-10162 Caliper Bracket Mounting Bolt Kit, includes P/N 250-10031, 230-9080, 230-9182, 240-3902, 240-11101 and 240-8969
Item 3A is an optional item and is included in the “-D” drilled kit. Add -D to end of part number when ordering
Item 7A is an optional item and is included in the “-R” red kit. Add -R to end of part number when ordering.
Wilwood offers an optional Braided Stainless Steel Hose Kit. Order part number 220-8176 (C-5) or 220-9100 (C-6) (not included in kit)
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