CP8742 - Ø184mm (7¼") - Twin Plate - Heavy Duty - 12 Bolt

CP8742 - Ø184mm (7¼
Typical Applications:
- WRC.
- Touring Car

Features:
- Heavy Duty version of CP8022 family.
- Special high temperature diaphragm spring.
- New Assymetric designed cover.
- offers 10% reduction in weight and increased stiffness..
- Benefits from a new drive system, featuring drive tenons, which locate into internal jaws of the lugs.
- five times more durable than conventional clutch design when subjected to the same test parameters.
-  eradicates distorting of pressure plates trapping on lugs.
- Push Type.
- Stepped
Flywheel Fixing.
Inner diameter location.
- 12 bolt, one piece forged cover and lugs.
machined from aluminium alloy. Allows dust and debris to escape.
- Driven plate thickness - new = 6.00mm.
- Black hard anodised.
- New innovative wear plate design fitted.
- combats wear on the drive lugs.

- Very low wear rate.
- Individually tested

match machined, balanced and clutch load recorded
- Mounting studs available, CP4703.

NOTE: Alternative 'I' Drive Clutch
Standard duty alternative CP8022 family.

Part Numbers:
- CP8742-CH81-SF.
- CP8742-TH81-SF.
Torque Capacity Nm (lbs/ft)- CP8742-CH81-SF - 559 (411).
- CP8742-TH81-SF - 735 (542)
Release Load - Max Peak New - N- CP8742-CH81-SF - 4450.
- CP8742-TH81-SF - 5500
Release Load - Max Peak Worn - daN- CP8742-CH81-SF - 3750.
- CP8742-TH81-SF - 4350
Clutch "Wear In"1.50
Set-up Height - New- CP8742-CH81-SF - 31.92mm / 29.97mm.
- CP8742-TH81-SF - 31.71mm / 29.98mm
Set-up Height - Max Worn- CP8742-CH81-SF - 36.68mm.
- CP8742-TH81-SF - 37.50mm
Weight (Less D/Plates) Kg2.29
Release Bearing- Outer race rotates - CP3457-2 or -10.
- Inner race rotates - CP3457-6
Estimated Assy Intertia - No driven plates (Kgm²)0.01480Kgm²
Estimated Driven Plate & Hub Inertia (Kgm²)- Back to back type - 0.003569Kgm²
Driven Plate OptionsNew = 6.00mm Nom.
Worn = 5.63mm Min. Driven Plate Types
cp8301 type driven plate - Bonded 3 paddle x 2
CP8301-A036H - 1"x23 spline
CP8301-A026H - 7/8"x20 spline

cp8401 type driven plate - Bonded 4 paddle x 2
CP8401-A036H - 1"x23 spline
CP8401-A026H - 7/8"x20 spline

CP8601 type driven plate - Bonded 6 paddle x 2
CP8601-A036H - 1"x23 spline

- Nested 4 paddle x 2
CP8405-A036H - 1"x23 spline
- Alternative Nested 4 paddle x 2
CP8172-10FM4 - 1" x 23 spline - Flywheel spline
CP8172-11FM4 1" c 23 spline - Cover side
other splines available see.
N.B. Clutch supplied less driven plate.
-bonded driven
plate chart
Spare Parts
Main Pressure PlateCP8742-105
Intermediate Pressure PlateCP8022-102
Click on the link to download the relevant drawing
Customer Installation Drawing