LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 1992 >> SC 400 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 4.0L V8 >> Torque Specifications
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Torque Specifications

TORQUE SPECIFICATIONS

Application Ft. Lbs. (N.m)
A/C Compressor
Bolt 36 (49)
Nut 22 (30)
Air Intake Chamber Bolt/Nut 13 (18)
Camshaft Bearing Cap Bolt (1) 12 (16)
Camshaft Sprocket Bolt 80 (109)
Catalytic Converter-To-Exhaust Manifold Nut 46 (62)
Catalytic Converter-To-Exhaust Pipe Bolt 32 (43)
Cold Start Injector Fuel Line-To-Delivery
Pipe Union Bolt 11 (15)
Connecting Rod Cap Bolt
Step 1 18 (24)
Step 2 Additional 90 Degrees
Coolant Inlet Housing Bolt 13 (18)
Coolant Inlet Housing Plug 33 (45)
Crankshaft Pulley Bolt 181 (245)
Crossmember Bolt/Nut
Bolt 19 (26)
Nut (2)
Cylinder Head Bolt (3)
Step 1 29 (39)
Step 2 Additional 90 Degrees
Delivery Pipe Nut 13 (18)
Distributor Housing Bolt 13 (18)
Drive Belt Idler Pulley Bolt 27 (37)
Drive Belt Tensioner Bolt/Nut 12 (16)
Drive Plate Bolt 72 (98)
Drive Shaft Center Bearing Bolt
LS400 27 (37)
SC400 36 (49)
Drive Shaft Flange Bolt
LS400 58 (79)
SC400 69 (94)
EGR Pipe Nut 13 (18)
EGR Valve Adapter Bolt/Nut 13 (18)
EGR Valve Bolt/Nut 13 (18)
Engine Mount Nut 43 (58)
Exhaust Manifold Nut
LS400 33 (45)
SC400 29 (39)
Fan Bracket Bolt/Nut (LS400 Only)
12-mm Head 12 (16)
All Others 22 (30)
Fan Clutch Assembly Nut (LS400 Only) 16 (22)
Front Coolant By-Pass Housing Nut 13 (18)
Fuel Inlet Hose-To-Delivery Pipe 29 (39)
Fuel Return Pipe Union Bolt 26 (35)
Hydraulic Pump Bolt/Nut (SC400 Only)
12-mm Head 12 (16)
All Others 22 (30)
Intake Manifold Bolt/Nut 13 (18)
ISC Valve Nut 13 (18)
Knock Sensor 33 (45)
Main Bearing Cap
Bolt (4) 36 (49)
Nut (5)
Step 1 20 (27)
Step 2 Additional 90 Degrees
No. 1 & No. 2 Idler Pulley Bolt 25 (34)
No. 2 Timing Belt Cover Bolt
10-mm Head (6)
12-mm Head 12 (16)
Oil Filter Bracket Bolt/Nut 13 (18)
Oil Pan
No. 1 Oil Pan Bolt/Nut
10-mm Head (6)
12-mm Head 13 (18)
No. 2 Oil Pan Bolt/Nut (6)
Oil Pump Bolt
12-mm Head 12 (16)
14-mm Head 22 (30)
Oxygen Sensor-To-Exhaust Pipe 33 (45)
Power Steering Pump
Bolt 29 (39)
Nut 32 (43)
Pulsation Damper 29 (39)
Rear Coolant By-Pass Housing Nut 13 (18)
Spark Plug 13 (18)
Steering Damper Bolt (LS400 Only) 20 (27)
Throttle Body Bolt/Nut 13 (18)
Timing Belt Tensioner Bolt 20 (27)
Water Pump Bolt/Nut 13 (18)
INCH Lbs. (N.m) 
Baffle Plate Bolt/Nut 69 (8)
Center Floor Crossmember Brace Bolt/Nut 108 (12)
Cold Start Injector Bolt 69 (8)
Distributor Cap Bolt 34 (4)
Distributor Rotor Bolt 34 (4)
Main Bearing Stud-To-Cylinder Block 84 (10)
Oil Pump Cover Bolt 96 (11)
Pick-Up Sensor Bolt 56 (7)
Pick-Up Tube Bolt/Nut 69 (8)
Rear Oil Seal Retainer Bolt 69 (8)
Timing Belt Rear Plate Bolt 69 (8)
Valve Cover Bolt 52 (6)
(1) Tighten bolts to specification in sequence. See Figure.
(2) Tighten to 124 INCH lbs. (14 N.m).
(3) Tighten bolts to specification in sequence. See Figure.
(4) Tighten main bearing cap nuts before tightening bolts. Bolts are located on along outside of cylinder block.
(5) Tighten nuts to specification in sequence. See Figure.
(6) Tighten to 69 INCH lbs. (8 N.m).