1990-2000 Lexus LS 400 Piston Rings - All Torque Specs

4.0L V8

Applies to 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, and 2000 Lexus LS 400

Labor Time:20 hours

Torque Values (11 specifications)

Component	Nm	lb-ft	Notes
⚠️ Connecting Rod Bolts	45	33	TTY - critical torque plus angle
Cover Bolts	19	14	—
⚠️ Cylinder Head Bolts	65	48	TTY - tighten in sequence plus angle
⚠️ Gasket Bolts	23	17	—
⚠️ Main Bearing Cap Bolts	75	55	TTY - tighten in sequence plus angle
Mounting Bolts	31	23	—
⚠️ Mounting Bolts	55	40	—
⚠️ Oil Drain Plug	35	26	Use new crush washer
⚠️ Oil Pan Bolts	12	9	Tighten in sequence
⚠️ Oil Pump Pickup Tube	12	9	—
Sensor Bolts	12	9	—

The primary torque specification for piston rings - all on a 1990-2000 Lexus LS 400 is 45 Nm (33 lb-ft). Note: TTY - critical torque plus angle

There are 11 torque specifications for piston rings - all on the 1990-2000 Lexus LS 400 4.0L V8, covering all related fasteners and components.