Clutch

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Depending on your engine, the clutch will usually be the standard part. It may be you have a balanced clutch system if the engine has been dynamically balanced. 

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Ford V6 Essex 3.0 Clutch

This is a general reference section for the Ford Essex 3 Litre Clutch assembly, allowing you to correctly identify a new kit without removing the old one, and also to check for wear. This is based on my findings when changing clutches on these models.

Friction Plate
Friction Plate Diameter = 240mm
Marking on gearbox side of plate = 52509
Marking on flywheel side of plate = 50052
Depth of friction plate to rivet heads = 2.1mm on a new friction plate
Depth of friction material (only) on one side = 4.3mm on new friction plate
Thickness of friction material (total from face to face) = 9.5mm on a new friction plate
Splines = 23
Number of springs in friction plate = 6 - should be tight. Any rattle means starting to wear and will be noisy
Friction plate hub depth = 33mm

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Pressure Plate
Borg & Beck Marking Type 9/9½ D.S.
C28H marking found on one spring spoke
18 Spring Spokes in total
Outside diameter of clutch contact surface = 244mm
Inside diameter of clutch contact surface = 152.2mm (6" exactly)
Maximum diameter of outer housing = 287.5mm (11 5/16")
P.C.D. of fixing bolt holes = 273.5mm (10 6/8")
New pressure plate height (measured when laying flat on a flat surface to the top of the spring spokes) = 59.4mm. If the springs are uneven where they contact the release bearing then this will mean wear is evident. Replace if in doubt, and certainly if any springs are broken.

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Thrust (Release) Bearing
Marking = >PA66 GF35<
              INA (8 or 9)02993
              00 94

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Worn out pressure plate - the release bearing won't sit flat on all the spring spokes