Based on the 993 Carrera 2 coupe, the 993 Cup 3.8 was developed at Porsche’s competition department to replace the 964-based Carrera Cup 3.6 racer. Aimed squarely at the 1994 Supercup series, it utilized a new 3.8-litre M64/70 engine. This powerplant developed 310 bhp at 6,100 rpm, 40 more bhp than the earlier 3.6 Cup engine, and gave the car a top speed of 280 km/h.
The new engine had a rev limit of 6,900 rpm, but as it utilized many valve-train components from its sister RSR, was capable of turning safely as high as 7,900 rpm. This meant that the engine was low stressed for a race engine and incredibly reliable. The new 6-speed gearbox has very short shifts and was also enhanced for more reliability with steel synchromesh rings. The 3.8 Cup engine type number is M64/70 and gearbox type number is G50/30. The upgraded six-speed G50/30 manual transaxle had 40% limited-slip.
A Matter rollcage was welded in, greatly improving chassis stiffness, but the car was otherwise stripped, losing its power steering, upholstery, carpeting, trim, and sound insulation. A single Recaro racing seat with Sabelt harness, a Momo steering wheel, a fire suppression system, and air jacks were installed.
Photo Source: Collecting Cars
