Porsche 996 TT, Repair Manual

Page: 117 / 2099

Engine
Engine
Engine type M96/70 S
Bore mm (in.) 100 (3.94)
Stroke mm (in.) 76.4 (3.01)
Cubic capacity cm³ (cu. in.) 3600 (219.7)
Compression ratio 9.4:1
Max. engine power as per 80/1269/EEC kW 340
at engine speed rpm 5700
Max. torque Nm (ftlb.) 620 (63.20)
at engine speed rpm 3500 − 4500
Max. litre output kW/l, HP/l 94.44
Engine speed limitation by fuel cutoff at rpm 6750
Idle speed rpm 740 ± 40
Engine weight as per DIN 70020 A kg 260
top of page
Engine design
Type 6−cylinder aluminium opposed−cylinder engine, water cooled, bi−Turbo
Crankcase Vertically divided crankcase made from cast light alloy, separate cylinder
housing
Cylinder housing Cast light alloy with wet light alloy bushings inserted, Nikasil coating
Crankshaft Forged, supported by 8 bearings
Crankshaft bearings Plain bearings
Con−rod bearings Plain bearings
Connecting rods Forged
Cylinder Nikasil cylinder lining
Cylinder head Light alloy
Camshaft housing Aluminium alloy
Valve guide Pressed in
Valve arrangement 2 inlet valves suspended in parallel V arrangement
2 exhaust valves suspended in parallel V arrangement
Valve control Via flat−base tappets
Camshaft From the crankshaft via a gear wheel to the intermediate shaft, and from there
to the exhaust and inlet camshafts via one double chain each.
Inlet opens 10° before TDC
einordnung
Engine 54