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Engine Mechanical 4.0L V8 - VIN (C): Specifications Oldsmobile Aurora II

Mechanical

Crankcase Capacity

Oil capacity is 7.5 qts. (7.0L) with filter change.

Oil capacity is 7.0 qts. (6.6L) without filter change.

TORQUE SPECIFICATIONS

ApplicationFt. Lbs. (N.m)
A/C Compressor Bracket-To-Lower Crankcase
Bolt18 (24)
A/C Compressor Bracket-To-Compressor18 (24)
A/C Compressor-To-Block & Bracket37 (50)
Camshaft Chain Guide-To-Head Bolt18 (24)
Camshaft Chain Tensioner-To-Block Bolt18 (24)
Camshaft Sprocket Bolt89 (121)
Connecting Rod Bolt (1)
Step 122 (30)
Step 2Back Off To Zero
Step 318 (24) + Additional 110 Degrees
Coolant Temperature Sensor15 (20)
Crankshaft Balancer Bolt
Step 137 (50)
Step 2Additional 120 Degrees
Cylinder Head Bolt (M11) (1) (2)
Step 130 (41)
Step 2Additional 70 Degrees
Step 3Additional 60 Degrees
Step 4Additional 60 Degrees (190° Total)
Drive Belt Idler Pulley Bolt37 (50)
Drive Belt Tensioner37 (50)
EGR Pipe-To-Water Outlet18 (24)
EGR Tube-To-Intermediate Pipe Nut44 (60)
EGR Valve Retaining Nuts18 (24)
Engine-To-Frame Mounting Bolts141 (191)
Exhaust Manifold Bolt/Nut18 (24)
Exhaust Manifold-To-Pipe Bolt18 (24)
Flexplate Bolt
Step 111 (15)
Step 2Additional 50 Degrees
Front Engine Mount Nut52 (71)
Generator Bracket-To-Block37 (50)
Generator-To-Bracket Bolts37 (50)
Intermediate Sprocket Retaining Bolt44 (60)
Knock Sensor15 (20)
Main Bearing Cap Bolts (3)
Step 115 (20)
Step 2Additional 65 Degrees
Oil Filter Adapter Bolt21 (28)
Oil Filter Adapter Plug15 (20)
Oil Level Sensor15 (20)
Oil Pan Brace37 (50)
Oil Pan Drain Plug15 (20)
Oil Pressure Switch12 (16)
Oxygen Sensor30 (41)
Power Steering Pump-To-Bracket Bolts25 (34)
Starter-To-Block Bolt22 (30)
Torque Converter-To-Flywheel Bolt44 (60)
Torque Strut Bracket-To-Cylinder Head Bolt37 (50)
Torque Strut Bracket-To-Water Manifold Bolt18 (24)
Transmission-To-Engine Bolt
Short37 (50)
Long55 (75)
Transmission Brace-To-Block Bolt37 (50)
Transmission Brace-To-Oil Pan Bolt37 (50)
Transmission Brace-To-Transmission Bolt37 (50)
Vehicle Speed Sensor Heat Shield Nuts37 (50)
Water Outlet-To-Head Bolt18 (24)
Water Pump Housing-To-Block Bolt74 (100)
Water Pump Housing-To-Head Bolt74 (100)
INCH Lbs. (N.m)
Camshaft Bearing Cap Bolt106 (12)
Camshaft Chain Guide Access Plug39 (4.5)
Camshaft Cover Bolt89 (10)
Camshaft Seal-To-Cover Bolt27 (3)
Camshaft Thrust/Retaining Plate Bolt89 (10)
Crankshaft Position Sensor89 (10)
Flexplate Housing Cover Bolt80 (9)
Front Cover Bolt89 (10)
Ignition Module-To-Camshaft Cover Bolt106 (12)
Intake Manifold Bolt89 (10)
Intermediate Sprocket Shaft Bolts89 (10)
Oil Dipstick Tube Bolt89 (10)
Oil Manifold-To-Lower Crankcase Bolt89 (10)
Oil Pan Bolts (4)89 (10)
Oil Pump Suction Pipe Bolt89 (10)
Oil Pump-To-Lower Crankcase Bolt
Step 189 (10)
Step 2Additional 35 Degrees
Power Steering Pressure Hose Retaining Nut80 (9)
Thermostat Housing-To-Water Pump Housing Bolt89 (10)
Water Pump Cover Bolt89 (10)
Water Pump Drive Belt Tensioner-To-Water Manifold Stud89 (10)
(1) Always use NEW bolts. (2) Tighten in sequence. (Схема №1) (3) Tighten in sequence. (Схема №8) (4) Tighten in sequence. (Схема №38)
(1)Always use NEW bolts.
(2)Tighten in sequence. (Схема №1)
(3)Tighten in sequence. (Схема №8)
(4)Tighten in sequence. (Схема №38)

TORQUE SPECIFICATIONS

GENERAL SPECIFICATIONS

ApplicationSpecification
Displacement244 Cu. In.
Bore3.43" (87.0 mm)
Stroke3.31" (84.0 mm)
Compression Ratio10.0:1
Fuel SystemSFI

GENERAL SPECIFICATIONS

CAMSHAFT SPECIFICATIONS

ApplicationIn. (mm)
Bearing Bore Diameter1.0635-1.0642 (27.013-27.031)
Journal Diameter1.0609-1.0619 (26.948-26.972)
Lobe Lift
Exhaust.2339 (5.94)
Intake.2421 (6.15)
Oil Clearance
Standard.002-.003 (.051-.076)
Wear Limit.0035 (.089)
Out-Of-Round.0002 (.005)
Runout.002 (.050)

CAMSHAFT

ENGINE VALVES & VALVE SPRINGS SPECIFICATIONS

ApplicationSpecification
Valves
Intake
Face Angle45°
Head Diameter1.3421-1.3524" (34.090-34.35 mm)
Minimum Margin.005" (.127 mm)
Length4.3543-4.3646" (110.60-110.86 mm)
Stem Diameter.2331-.2339" (5.920-5.941 mm)
Installed Height (1)
Exhaust
Face Angle45°
Head Diameter1.0976-1.1079" (27.880-28.140 mm)
Minimum Margin.030" (.76 mm)
Length3.6114-3.6217" (91.730-91.990 mm)
Stem Diameter.2331-.2339" (5.920-5.941 mm)
Installed Height (1)
Valve Springs
Free Length1.6059-1.7201" (40.790-43.690 mm)
Installed Height1.3780" (35 mm)
Lbs. @ In. (kg @ mm)
Pressure
Valve Closed47.5-52.5@ 1.3780 (21.5-23.8 @ 35.0)
Valve Open130.2-141.9 @ .9646 (59.0-64.4 @ 24.5)
(1) Information unavailable from manufacturer
(1)Information unavailable from manufacturer

VALVES & VALVE SPRINGS

CYLINDER BLOCK SPECIFICATIONS

ApplicationIn. (mm)
Cylinder Bore
Diameter(1) 3.4249-3.4255 (86.992-87.008)
Maximum Out-Of-Round.004 (.100)
Maximum Taper.004 (.100)
Maximum Deck Warpage.004 (.100)
Deck Height8.8406 (224.55)
(1) Measurement taken 1.61" (41 mm) below Deck Face
(1)Measurement taken 1.61" (41 mm) below Deck Face

CYLINDER BLOCK

CONNECTING RODS SPECIFICATIONS

ApplicationIn. (mm)
Bore Diameter
Crankpin Bore (Without Bearing)2.2495-2.2501 (57.136-57.152)
Piston Pin Bore.9234-.9421 (23.454-23.929)
Center-To-Center Length5.945 (151.00)
Side Play.0079-.0197 (.200-.500)

CONNECTING RODS

CYLINDER HEAD SPECIFICATIONS

ApplicationSpecification
Deck Warpage(1)
Valve Seats
Intake Valve
Seat Angle45.75°
Seat Width.0165-.0323" (.420-.820 mm)
Maximum Seat Runout.002" (.05 mm)
Exhaust Valve
Seat Angle45.75°
Seat Width.0512-.0669" (1.30-1.70 mm)
Maximum Seat Runout.002" (.05 mm)
Valve Guides
Valve Guide Inner Diameter.2350-.2358" (5.969-5.989 mm)
Valve Stem-To-Guide Oil Clearance
Intake
Standard.0011-.0027 (.028-.068)
Wear Limit.0043 (.109)
Exhaust
Standard.0020-.0039 (.050-.099)
Wear Limit.0047 (.119)
(1) If warpage is less than.002" (.05 mm), it is not necessary to resurface cylinder head. If warpage is.002-.008" (.05-.20 mm), resurface cylinder head. After resurfacing, measure distance between gasket surface and gauge pad. (Схема №38) If distance is less than.413" (10.50 mm), replace cylinder head.
(1)If warpage is less than.002" (.05 mm), it is not necessary to resurface cylinder head. If warpage is.002-.008" (.05-.20 mm), resurface cylinder head. After resurfacing, measure distance between gasket surface and gauge pad. (Схема №38) If distance is less than.413" (10.50 mm), replace cylinder head.

CYLINDER HEAD

CRANKSHAFT, MAIN BEARINGS & CONNECTING ROD BEARINGS SPECIFICATIONS

ApplicationIn. (mm)
Crankshaft End Play
Standard.0020-.0197 (.05-.500)
Wear Limit.0197 (.500)
Main Bearings
Journal Diameter2.5335-2.5341 (64.350-64.366)
Journal Maximum Out-Of-Round.0002 (.005)
Journal Maximum Taper.0002 (.005)
Oil Clearance
Standard.0006-.0022 (.015-.055)
Wear Limit.0025 (.0635)
Connecting Rod Bearings
Journal Diameter2.1239-2.1245 (53.947-53.963)
Journal Out-Of-Round.0002 (.005)
Journal Taper.0002 (.005)
Oil Clearance.0010-.0030 (.025-.076)

CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS

PISTONS, PISTON PINS & PISTON RINGS SPECIFICATIONS

ApplicationIn. (mm)
Pistons
Clearance.0008-.0020 (.020-.050)
Pin Bore.8268-.8271 (21.002-21.009)
Pins (1)
Diameter.8659-.8661 (21.995-22.000)
Rings
No. 1
End Gap.0098-.0157 (.250-.400)
Side Clearance.0016-.0037 (.040-.094)
No. 2
End Gap.014-.020 (.35-.50)
Side Clearance.0016-.0037 (.040-.095)
No. 3 (Oil)
End Gap.010-.030 (.25-.76)
Side ClearanceNone (Side-Sealing)
(1) Pins are retained with snap rings.
(1)Pins are retained with snap rings.

PISTONS, PINS & RINGS

VALVE LIFTERS SPECIFICATIONS

ApplicationIn. (mm)
Lifter Diameter.4719-.4724 (11.986-12.000)
Bore Diameter.4730-.4739 (12.014-12.037)
Oil Clearance.0015-.0016 (.038-.041)

VALVE LIFTERS

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