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Porsche 911 993 (1994 – 1998) – Engine Torque Specs

Carrera, Carrera 4, Carrera S

Porsche 911 993 (1993 - 1998) – Engine Torque Specs

1994-1998 Porsche 911 Engine Torque Directions

This tightening torque specs list is ONLY for the following Porsche models and years: 1993 to 1998 Porsche 911 (993) Carrera, 4, S, 4S – years 1993, 1994, 1995, 1996, 1997 and 1998

Location Thread type Tightening torque Nm (ftlb.)
Crankshaft/crankcase
Connecting rod bolt (Identification: 14) M 9 x 1 .25 First stage: 30Nm (22ftlb.)
Final stage:1 x 90º +- 2º rotating angle
Final check: 60
Oil pump M8 23Nm (17 ftlb.)
Crankcasebolt connection (through bolts) M 10 x 1.25 50Nm (37 ftlb.)
Hexagon head nuts or hexagon head bolts to crankcase M8 23Nm (17 ftlb.)
Double mass flywheel to crankshaft M 10 x 1.25 x 70 85Nm (63 ftlb.)
Drive plate to crankshaft (Tiptronic) 90Nm (66 ftlb.)
V-belt pulley to crankshaft M 14 x 1.5 170Nm (125 ftlb.)
Plug-pressure relief and safety valve M 18 x 1.5 60Nm (44 ftlb.)
Oil drain plug for crankcase housing M 20 x 1.5 50 + 5Nm (37 + 4 ftlb.)
Oil drain plug for thermostat housing M 20 x 1.5 50 + 5Nm (37 + 4 ftlb.)
Screw-in neck in left-hand crankcase section (oil return to oil tank) M 22 x 1.5 70Nm (52 ftlb.)
Screw-in flange in right-hand crankcase section (oil feed to oil pump) M 24 x 1.5 90Nm (66 ftlb.)
Cylinder and cylinder head
Cylinder head bolts First stage: 20Nm (15ftlb.)
Final stage: 1 x 90° +- 2° rotating angle
Camshaft housing/cylinder heads M8 23Nm (17 ftlb.)
Knock sensor bridge to cylinder bank M6 9.7Nm (7 ftlb.)
Knock sensor to knock sensor bridge 20 +- 5Nm (15 +- 4 ftlb.)
Engine -NTC to cylinder head 3 10…12Nm, max. 15Nm (7…9, max. 11 ftlb.)
Rocker arm shafts M6x35 13Nm (9 ftlb.)
Spark plugs M 14 x 1.25 30Nm (22 ftlb.)
Timing gear
Sprocket to camshaft M 12 x 1.5 120Nm (88 ftlb.)
Chain sprocket to camshaft (4-hole chain sprocket) 1 st step 20Nm (15 ftlb.)
2nd step 90º rotation
Gear / power steering pump to camshaft 120Nm (88 ftlb.)
Flange stud (slider andtensioning rail to crankcase) 30Nm (22 ftlb.)
Chain housing to crankcase 23Nm (17 ftlb.)
Chain housing cover 9.7Nm (7 ftlb.)
Valve cover to camshaft housing M6 9.7Nm (7 ftlb.)
Bearing saddle / chain housing 9.7Nm (7 ftlb.)
Fan
Tensioning strap 8Nm (6 ftlb.)
Alternator pulley 50 +- 5Nm (37 +- 4 ftlb.)
Pulley section / idler M6
Fan wheel for alternator cooling 14Nm (10 +- 0.7 ftlb.)
Exhaust system
Heat exchanger / cylinder head 28Nm (21 ftlb.)
Heat exchanger /catalytic converter or front muffler 23Nm (17 ftlb.)
Cataly1ic converter final muffler (ball clamp) 25 to 30(18 to 22 ftlb.)
Final muffler / tailpipe (ball clamp) 25 to 30(18 to 22 ftlb.)
Tensioning strap to catalytic converter or front muffler 20Nm (15 ftlb.)
Tensioning strap / final muffler 20Nm (15 ftlb.)
Oxygen sensor M 18 x 0.5 50 to 60(37 to 44 ftlb.)
Plug to catalytic converter M8x1 15(11 ftlb.)
Air injection lines 25(18 ftlb.)
Belt monitor
Bracket to crankcase M6 15 to 20Nm (11 to 15 ftlb.)
Belt monitor to bracket M6 9.7Nm (7 ftlb.)
Fuel system
Tank sender unit 30 – 3Nm (22 – 2 ftlb.)
Clutch / Double-mass flywheel (manufactured by Luk)
Double-mass flywheel to crankshaft M10 x 1.25 x 70 85Nm (63 ftlb.)
Pressure plate M 8 x 40 23Nm (17 ftlb.)
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