Tilton Firewall User Manual
OF
INSTALLATION INSTRUCTIONS
600 Series Steel Firewall-mount Pedal Assembly
Description
The Tilton Firewall-mount pedal assembly has been designed to provide the driver
with the greatest control and comfort from a swing-style pedal assembly. The 6.2:1
pedal ratio delivers the optimum pedal prole. Firewall-mount pedal assemblies
are NASCAR approved and the master cylinders must be mounted in the engine
compartment.
Welded steel pedals provide the strength and durability to handle the most severe
braking conditions. The pedal assembly is set up for dual brake master cylinders and
includes the balance bar assembly. The balance bar allows adjustment of the brake
pedal force distribution between the two master cylinders. This system can be used
to compensate for fuel load changes, tire wear, and changing track conditions.
The Remote Brake Bias Adjuster is also available as an option. This connects to the
balance bar and allows the driver to make balance bar adjustments quickly while on
track.
Fluid reservoirs can be directly mounted to the master cylinders or can be remotely
mounted based on your application. It is important to follow these setup instructions
closely to realize the benets of this design.
98 -12 03
installation notes
• Securing the pedal frame to a cross-member will greatly enhance the stability of
the pedal assembly.
• The mounting location should suit the driver and also provide a stable platform.
• Be sure that there is no binding during the full stroke of the master cylinders
when the pedal is depressed.
• The balance bar mechanism must clear all obstructions when the balance bar is
adjusted to the extreme right or left-of-center.
• If you have decided to remotely mount the reservoirs, select the location for the
reservoirs before starting installation.
• This is a gravity fed system, so the reser voirs must be located above the master
cylinders.
• Attention must be paid to the routing and location of the hydraulic lines. Avoid
heat sources such as exhaust pipes.
• Accurate clutch pedal setup is critically important. Improper clutch pedal instal-
lation and/or adjustment can result in expensive clutch damage and DNFs at the
track!
Master cylinders sold separately
JAM NUT SECURES BIAS BAR SETTING.
FOR REMOTE CABLE ADJUSTER, REMOVE
JAM NUT AND SECURE CABLE TO END
BIAS BAR WITH CABLE COUPLER
CLEVIS DESIGNED FOR
MINIMUM FREE PLAY WITH
OR WITHOUT JAM NUTS
STIFF, LIGHTWEIGHT
TUBULAR STEEL
CLUTCH AND BRAKE
PEDALS
Diagram 1
installation
FIREWALL
GAP REQUIRED
9.5" MINIMUM
PEDAL AT REST
MASTER CYLINDER
BOTTOMED
11.75"
1. Set the clevis center-to center distance at 2.620 +/- .040". You need to do
this before attaching the master cylinders.
2. Thread the adjusting shaft left or right until the spherical bearing is near
the center of the pivot sleeve. Note that the right end of the balance bar
has a longer threaded section and will stick out farther.
3. If you are using a remote adjuster, remove the jam-nut from the adjusting
shaft. If you are not using a remote adjuster, tighten the jam-nut against
the barrel nut on the longer end (right end) of the shaft. The round end
goes against the barrel nut.
4. Mount the pedal assembly in the car. It is important to mount the frame
rigidly so that it does not move when heavy pedal force is applied to both
pedals. See diagrams 5–8 for mounting hole locations. The four large
through holes are for attaching to the main support structure while the
two tapped holes and the six master cylinder mounting studs (which
often pass through a rewall) can be used for additional stiening.
5. If you are going to bench bleed your master cylinders, now is the time.
6. Bolt the master cylinders into place with the supplied 5/16"-24 serrated
ange nuts. Make sure the master cylinder pushrod has a jam-nut.
7. Thread the master cylinder pushrods into the clevises equal amounts
(you may need to alter this later) until the pedal foot pad is in the
correct position for the driver (See Diagram 2). A minimum of .25" thread
engagement (6 threads) is recommended.
8. Tighten the master cylinder pushrod jam-nuts against the clevises.
9. Make sure that the chosen pedal position allows a full 1" of stroke at both
master cylinders.
10. Make sure that the adjusted position also allows both master cylinders
to return to their fully relaxed position without binding. Preload on the
master cylinder pushrods can cause the brakes to lock up when hot when
there is no force on the pedal.
11. Attach hydraulic lines.
12. Attach the reservoirs and bleed as directed in the master cylinder
directions. With a balance bar, always bleed a front and a rear caliper at
the same time to insure total air removal.
13. Apply the brakes and adjust the pushrod length so the adjusting shaft is
parallel to the master cylinder mounting surface
(See Diagram 3). If one pushrod is shortened by one revolution,
lengthening the other by one revolution will maintain the same pedal
position. Do not extend the pushrods to the point where they preload
the master cylinder pistons. After adjusting, tighten the jam-nuts on both
pushrods.
14. You will need to test drive the vehicle to determine if adjustments need
to be made to the brake bias (front/rear brake force distribution). See
Section F for making bias adjustments.
Diagram 2
Diagram 3
3.1
Pedal De-
pressed
Balance Bar
not at an
angle
(Correct)
3.2
Pedal De-
pressed
Balance Bar
at an angle
(Incorrect)
3.3
Pedal Re-
laxed
Balance Bar
may or may
not be
at an angle
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