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Assembly instructions (continued), Balancing the brake bias on 4 wheel disc vehicles – Wilwood Forged Dynalite Front Drag Brake Kit User Manual

Page 6

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Page 6

Assembly Instructions (Continued)

•Install the disc brake pads (20) and secure using cotter pin (21).

•Temporarily install wheel and torque lug nuts to manufacturer’s specification. Ensure that the

wheel rotates freely without any interference. NOTE: Wheel spacer (Wilwood P/N 300-11961)
MUST be used if any wheel contact surfaces overhang the outside diameter of the hub face.
See warning on page 3.

NOTE: OEM rubber brake hoses generally cannot be adapted to Wilwood calipers. The caliper

inlet fitting is a 1/8-27 NPT. The preferred method is to use steel adapter fittings at the caliper,
either straight, 45 or 90 degree and enough steel braided line to allow for full suspension travel
and turning radius, lock to lock. Carefully route lines to prevent contact with moving
suspension, brake or wheel components.
Wilwood hose kits are designed for use in many
different vehicle applications and it is the installer's responsibility to properly route and ensure
adequate clearance and retention for brake hose components.

•Specified brake hose kits may not work with all Years, Makes and Models of vehicle that this

brake kit is applicable to, due to possible OEM manufacturing changes during a production
vehicle's life. It is the installer's responsibility to ensure that all fittings and hoses are the correct
size and length, to ensure proper sealing and that they will not be subject to crimping, strain
and abrasion from vibration or interference with suspension components, brake rotor or wheel.

•In absence of specific instructions for brake line routing, the installer must use his best

professional judgment on correct routing and retention of lines to ensure safe operation. Test
vehicle brake system per the 'minimum test' procedure stated within this document before
driving. After road testing, inspect for leaks and interference. Initially after install and testing,
perform frequent checks of the vehicle brake system and lines before driving, to confirm that
there is no undue wear or interference not apparent from the initial test. Afterwards, perform
periodic inspections for function, leaks and wear in a interval relative to the usage of vehicle.

• Bleed the brake system. Reference the general information and recommendations on page 7

for proper bleeding instructions.

• Install the wheel and torque to manufacturer’s specifications. NOTE: Wheel spacer (Wilwood P/N 300-11961) MUST be used if any

wheel contact surfaces overhang the outside diameter of the hub face. See warning on page 3.

END OF BOLT

HEAD
OF BOLT

HEAD
OF BOLT

HEAD
OF BOLT

CORRECT

END OF BOLT IS FLUSH WITH, OR SLIGHTLY

PROTRUDING FROM END OF CLINCH NUT

WRONG

END OF BOLT IS BELOW END OF CLINCH NUT

WRONG

END OF BOLT IS PROTRUDING TOO FAR

FROM END OF CLINCH NUT AND MAY

INTERFERE WITH MOVING PARTS

END OF
CLINCH NUT

END OF
CLINCH NUT

END OF
CLINCH
NUT

END OF BOLT

END OF
BOLT

Figure 5.

Clinch Nut Engagement Diagram

Balancing The Brake Bias on 4 Wheel Disc Vehicles

OE Style or Single Mount Race Pedal with Tandem Outlet Master Cylinder:

Front to rear caliper piston sizes, rotor diameters, and pad compounds must be initially configured to provide the correct range of vehicle
bias when using a single bore / tandem outlet master cylinder. If excessive rear brake bias is experienced, an inline adjustable
proportioning valve can be used to decrease the rear line pressure to help bring the vehicle into balance. If excessive front brake bias is
experienced, first consideration should be given to increasing the rear brake bias to bring the vehicle into overall balance.

Race Pedal with Dual Master Cylinders and Balance Bar:

Master cylinders must be sized to match the calipers and allow the pedal balance bar to operate near the center of its travel. If it is not
possible to fine tune the bias within the adjustable range of the balance bar, then consideration must be given to changing a master
cylinder bore size or some other aspect of the brake system to bring the car into balance. Larger bore master cylinders will generate less
pressure while decreasing pedal travel. Smaller bores master cylinders will generate higher line pressures with an increase in pedal travel.