There is only one original Verto/Valeo clutch plate and is fashioned more like a ‘conventional’ clutch plate - it has a sprung centre section.
part numbers: GCP204AF, GCP90311AF, GCP90832AF,
Four springs around the centre section of the plate take up shock, and supposedly reduce the likelihood of judder. It was an attempt by Rover to improve the clutch take-up and engagement to make is more like a 'modern' car. Except it didn't. The engagement feels wooly at best, and judders horribly at worst. They even went as far as making two plates, one for small-bore, one for big-bore. The difference being the centre spring tensions!
From experience, judder is caused by undulating flywheel/pressure plate surfaces, or ‘breakfast cereal packet’ lined non-genuine plates. It's OK, but if any warming up of the engines output is considered, definitely go for the pre Verto plate. This will fit with the Verto set-up and is a cheaper into the bargin. The Metro Turbo had a Verto flywheel type, but the clutch had the more familiar solid centre of the pre Verto assembly. Guess that illustrates the break-point in capability quite nicely - the Turbo unit putting out 90-95 lb ft of torque.
Whilst it is entirely possible to fit any of the other up-rated/performance clutch plates to the Verto/Valeo set-up, they simply won't work because the diaphragm spring arrangement will not provide sufficient clamping pressure.
Useful part numbers:
GCP204AF - Standard per Verto plate, 180mm diameter
GCP90311AF - Standard small-bore plate - Verto/Valeo, 184mm diameter
GCP90832AF - Standard big-bore plate - Verto/Valeo, 190mm diameter
Author
Keith Calver