3 Manual transmission 911 Carrera/911 Carrera 4 · Six-speed manual transmission G 96/01

911 Transmission 3 3 Manual transmission 911 Carrera/911 Carrera 4 Six-speed manual transmission G 96/01 3_02_02 General The manual transmission for the rear- The aluminium die-cast housing has been wheel drive vehicle and the four-wheel further optimised with regard to acoustics drive vehicle is based on the 911 Carrera and vibration and has been adapted to the of the previous model. new installation position due to the stan- The manual transmission has been dardising of the trans- adapted to the higher engine torque of the mission mounts (manual and Tiptronic). 3.6 l engine with the dimensions and The efficiency has been improved by re- transmission ratios remaining unchanged. ducing the drag factor through decreased the necessary higher dynamic strength of preloading on the tapered roller bearings. the components has been achieved For vibration reasons, the input shaft has through the use of higher alloy steels and been converted from a 2-bearing to a 3- precision shot blasting at the pinion shafts. bearing arrangement (see arrow). Improved transmission cooling through directed air flow in the underbody of the vehicle, an open ventilator with labyrinth sealing and waxed sealing rings completes the optimisation. 2002 Service Information 3 - 1