The F28- 6 speed gearbox is used in many different types of Opels than the Calibra Turbo. The F28 gearbox fits without any problems on the following engine types:
To fit a F28 gearbox with a hydraulic clutch release bearing you need following parts:
Hydraulic release bearing from a F18 gearbox GM90522729
Oil line from release bearing to the outside of the gearbox GM 24422066
Oil line guide for in the opening of the existing release lever GM9052203
Special Mathijssen Technics oil seal
This oil seal has been specially developed for the assembly of a F18 hydraulic clutch release. The oil seal is made from a heat resistant material (Viton) and gives a good seal in all conditions. (Beware don’t use normal viton seals after a half an hour driving these seals will break) The seal comes with an instruction manual for easy assembly.