Mantic 9000 Series Twin Full Face Disc Clutch Kit With Uprated Pressure Plate, 1997-2004

What Are The Different Types Of Mantic Clutches Available For My Corvette:

Sprung Street Organic:
This is a sprung centre cushioned organic disc. It is the entry-level disc that offers better than OE engagement and pedal feel whilst still providing a higher torque capacity.

Sprung Street Cerametallic:
This is a sprung centre cushioned button type disc that offers a level of performance above organic discs, while offering little compromise in driving style and vehicle usage.

Rigid Street Cerametallic:
This is a rigid, non sprung centre, but with a cushioned button type disc that allows for a harder driving style with the best compromise for pure performance and drivability.

Rigid Track Paddle:
The solid centre, non cushioned metallic disc and is the highest level of the Mantic 9000 range.
Designed for pure performance, this clutch offers few compromises. Engagement is sudden, limiting the chance of slippage. It is recommended for track use only.

What Are The Advantages Of A Smaller Diameter, Multiple Disc Clutch Over A Larger Diameter Single Disc Unit?

1. Increase the amount of torque able to be transmitted.
2. Decrease the pedal effort to operate the clutch.
3. Decrease the weight of the clutch
4. Decrease the M.O.I. (Moment of Inertia) of the clutch.

The amount of torque that a clutch transmits is critical to the ultimate performance of a vehicle. Multi disc clutches increase the available torque capacity by 2 for twin disc and 3 for triple disc.

Torque Capacity is affected by 4 factors:

1. Decreasing the diameter reduces torque capacity.
2. A smaller diameter clutch has a smaller diaphragm, which usually means a lower clamping force
3. Adding a second clutch disc doubles the torque capacity.
4. Increasing the coefficient of friction of the clutch discs increases the torque capacity.
5. If the multi disc clutch is correctly designed and engineered, the losses from the smaller diameter and lower clamp force are much less than the gain in coefficient of friction and extra disc(s), giving the torque increase.

Examples:

Pedal Effort:

Smaller diaphragms used in multi disc clutches will usually require less pedal effort to disengage the clutch. This is in direct contrast to a larger single disc clutch which has a larger diaphragm with heavier pedal effort

Decreased Weight:

The above examples clearly show the weight relationship between multi disc and single disc clutches.

M.O.I. (Moment of Inertia):

Lower weight means less inertia has to be overcome to spin the clutch. This means less engine power is needed to turn the clutch. The net effect is the vehicle is able to accelerate faster. Lower weight also means that the clutch discs will not continue to spin on for as long and allow faster shifting. The net result again is faster acceleration and less time when there is no power being transmitted to the wheels.

Note: Mantic Torque capacity figures include a 1.5 safety factor. Other manufactures may not include this safety margin in their torque capacity ratings and quote theoretical capacities. In this case they would rate this clutch as having a torque capacity of approx 910ft lbs.