User Guide

EXEDY Globalparts Corporation • 800.346.6091 • www.exedyusa.com
EXEDY Globalparts Corporation • 800.346.6091 • www.exedyusa.com
Function of Various Sports/Performance Products
62
Function of Various Sports/Performance Products
63
Patented Center Plate Self Leveling Function
The amount of center plate travel during release is always maintained in a neutral position by the
reaction force of the lifting plate attached to both sides of the center plate.
• Improveddisengagement(acceleratedseparationfromfrictionsurface).
• ImproveddisclifebyeliminatingunbalancedwearattheT/MandF/Wside.
• Preventsandlowersmechanicalnoise.
Working Theory
Due to high temperatures generated by the clutch
system during operation, the pressure plate tends to
absorb a large portion of that heat, accelerating the
wear of the pressure plate side disc. The Lifting plate
location remains steady between the location area
on the pressure plate shown as (A) and F/W location
area shown as (B) on the chart above. Accordingly,
the wear of the pressure plate side disc is accelerated,
resulting in the F/W side disc automatically being
engaged earlier than the pressure plate side, which in
turn increases the F/W side disc’s work and wear rate.
Therefore, due to an increase in workload during half
engaged operations, wear on the F/W side disc will be
accelerated causing a reduction in the overall friction
material thickness, resulting in the F/W disc registering
a similar thickness friction material to that on the
pressure plate side.
Engine modications (cam, timing, turbo
modications etc.) cause engine pulsation and
vibrations. These vibrations can cause clutch rattle
when the clutch pedal is depressed by movement on
the intermediate separator plate, in some applications.
These noises will in no way aect the performance
of the EXEDY Multi-Plate Clutch. This rattle is well
accepted in the performance industry where engine
modications have been carried out.
Hyper Carbon Series
The agship model of EXEDY clutches, the Carbon Steel Multi-Plate
Clutch. These Clutches are lightweight, durable and resilient to high
heat, contributing to an improvement in track times.
Warm Up Procedure
Due to the inherent properties of the carbon
material, we must specify the proper way to
bring the discs up to operating temperature.
This Process will heat the discs so they will hold
the specied torque rating. The correct method
is three, ve second “slips” of the clutch within
30 seconds at low RPM.
High Heat Resistance
Carbon materials are baked at more than 3600 degrees Fahrenheit, which allows the carbon
material to dissipate heat far better than conventional metallic material. Heat expansion rate is
1/20th of iron therefore eliminating a change in clutch feel that may happen due to distortion
caused by expansion during driving. Carbon material not only has a high heat resistance but also a
“non-stick” characteristic that eliminates disengagement problems.
Light Weight & Low Inertia
Light in Weight
The heaviest components of the clutch system are
the clutch cover, intermediate plates and ywheel.
Semi-Carbon clutches incorporate an improved cover
conguration and lightened ywheel also contributing
to a reduction in vehicle rotating weight.
Low Inertia Design
The weight of a carbon clutch disc is one third that of a
metallic disc. Utilizing a high friction coecient Hyper
Carbon disc which allows for quicker shift response. Low
inertia discs allow the transmission to synchronize in a
shorter space of time eliminating time loss during shift
changing while also reducing the applied load to the
synchronizer.
Patented Clutch
Cushioning Function
The “cushion” function is a new
innovation unique to EXEDY. The
half engaged “zone” is expanded
as a result of a decrease in rigidity
of the pivot ring. Ideal pedal eort
is achieved as a result of a longer
lever ratio of the diaphragm
spring coupled with the cushion
reaction force.