SAE Global Supplier Marketplace
Login / MySAE  |  Sign Up!
SAE Home Industries
Search: Advanced Search

Magazine eMedia Advertising Info Contact Us

Global Viewpoints
Turbo for going, ceramic for stopping

Porsche's fastest production model, the 911 Turbo, is back for MY 2000, with a top speed of 305 km/h (189 mph) and acceleration from rest to 100 km/h (62 mph) in 4.2 s. Its engine is a 3.6-L producing 309 kW (420 hp), with maximum torque of 560 N•m (413 lb•ft) available from 2700 rpm.

Porsche gave details at the Frankfurt Motor Show of the planned introduction of its ceramic brake disc system with involute cooling ducts. It says the system, which significantly reduces unsprung weight, is currently undergoing tests that should soon be completed, with production following. However, no firm date has been given. The ceramic brake disc is based on a three-phase system with specially treated carbon fibers silicated in a high vacuum process at 1700°C (3092°F). The discs are cross-drilled and vented from inside. Weight saving compared to conventional discs is said to be around 50%, translating to a total of 20 kg (44 lb). The new 911 Turbo is plainly a candidate for the system.

Compared to other 911 versions, the Turbo has distinctively different front and rear styling. It has three large air scoops at the front and a new headlight design. At the rear is a new retractable wing and special air outlets. The 911 Turbo has twin turbochargers. The car has all-wheel-drive as standard, together with Porsche Stability Management (PSM). The 911 Turbo rides 10 mm (0.4 in) lower than the 911 Carrera.

Stuart Birch

©2009 SAE International. All rights reserved.