Home/Saturn/Aura/Saturn Aura I (2006-2010)/Repair manual/Mechanical/Engine Mechanical - 2.4L: Specifications

Contents

Wiring diagrams Section: Mechanical

All sections

Engine Mechanical - 2.4L: Specifications Saturn Aura I

Mechanical

Fastener Tightening Specifications

Application	Specification
Application	Metric	English
A/C Compressor to Block Bolt	20 N.m	15 lb ft
Balance Shaft Adjustable Chain Guide Bolt	15 N.m	11 lb ft
Balance Shaft Bearing Carrier to Block Bolt	10 N.m	89 lb in
Balance Shaft Fixed Chain Guide Bolt	15 N.m	11 lb ft
Balance Shaft Sprocket Bolt	50 N.m	37 lb ft
Block Core Plug	40 N.m	30 lb ft
Block Heater Bolt	10 N.m	89 lb in
Cam Cover to Cylinder Head Bolt	10 N.m	89 lb in
Cam Cover to Ground Cable Bolt	10 N.m	89 lb in
Cam Cover to Ground Cable Stud	10 N.m	89 lb in
Camshaft Cap Bolt	10 N.m	89 lb in
Camshaft Position Actuator Solenoid Valve Bolt	10 N.m	89 lb in
Camshaft Position Sensor Bolt	10 N.m	89 lb in
Camshaft Timing Chain Tensioner	75 N.m	55 lb ft
Chain Guide Plug	90 N.m	59 lb ft
Connecting Rod Bolt
First Pass	25 N.m	18 lb ft
Final Pass	100 degrees
Crankshaft Balancer Bolt
First Pass	100 N.m	74 lb ft
Final Pass	125 degrees
Crankshaft Bearings - Lower Crankcase to Block - Bedplate
First Pass	20 N.m	15 lb ft
Final Pass	70 degrees
Crankshaft Position Reluctor Ring	15 N.m	11 lb ft
Crankshaft Position Sensor Bolt	10 N.m	89 lb in
Cylinder Head Bolt
First Pass	30 N.m	22 lb ft
Final Pass	155 degrees
Cylinder Head Front Chaincase Bolt	35 N.m	26 lb ft
Cylinder Head Oil Gallery Plug	35 N.m	26 lb ft
Drive Belt Tensioner Bolt	45 N.m	33 lb ft
Drive Belt Tensioner Bracket Bolt	45 N.m	33 lb ft
EGR Cover Bolt	25 N.m	18 lb ft
Engine Coolant Temperature Sensor	20 N.m	15 lb ft
Engine Lift Bracket Front Bolt	25 N.m	18 lb ft
Engine Lift Bracket Rear Bolt	25 N.m	18 lb ft
EVAP Canister Valve Bolt	22 N.m	16 lb ft
Exhaust Camshaft Position Actuator
First Pass	30 N.m	22 lb ft
Final Pass	100 degrees
Exhaust Manifold Pipe Flange Stud	16 N.m	12 lb ft
Exhaust Manifold to Cylinder Head Nut - 2 passes	14 N.m	124 lb in
Exhaust Manifold to Cylinder Head Stud	10 N.m	89 lb in
Flywheel Bolt - Automatic Transmission
First Pass	53 N.m	39 lb ft
Final Pass	25 degrees
Flywheel Bolt - Manual Transmission
First Pass	53 N.m	39 lb ft
Final Pass	25 degrees
Front Cover to Block Bolt	25 N.m	18 lb ft
Front Lift Bracket Bolt	25 N.m	18 lb ft
Fuel Pipe Bracket Bolt	10 N.m	89 lb in
Fuel Rail Bracket Stud	10 N.m	89 lb in
Generator to Block Bolt	23 N.m	17 lb ft
Heat Shield to Exhaust Manifold Bolt	22 N.m	16 lb ft
Ignition Coil Bolt	10 N.m	89 lb in
Intake Camshaft Position Actuator
First Pass	30 N.m	22 lb ft
Final Pass	100 degrees
Intake Camshaft Rear Cap Bolt	25 N.m	18 lb ft
Intake Manifold to Cylinder Head Bolt	10 N.m	89 lb in
Intake Manifold to Cylinder Head Nut	10 N.m	89 lb in
Intake Manifold to Cylinder Head Stud	6 N.m	53 lb in
Knock Sensor Bolt	25 N.m	18 lb ft
Lower Crankcase to Block Perimeter Bolt	25 N.m	18 lb ft
Oil Filter Housing Cover	22 N.m	16 lb ft
Oil Gallery Gerotor Cover - Rear Bolt	6 N.m	53 lb in
Oil Gallery Plug	35 N.m	26 lb ft
Oil Gallery Plug - Rear	60 N.m	44 lb ft
Oil Level Indicator Tube to Intake Manifold Bolt	10 N.m	89 lb in
Oil Pan Drain Plug	25 N.m	18 lb ft
Oil Pan to Block Bolts	25 N.m	18 lb ft
Oil Pressure Switch	22 N.m	16 lb ft
Oil Pump Cover Bolt	6 N.m	53 lb in
Oil Pump Pressure Relief Valve Plug	40 N.m	30 lb ft
Oxygen Sensor	42 N.m	31 lb ft
Piston Oil Squirter	15 N.m	11 lb ft
Spark Plug	20 N.m	15 lb ft
Starter Motor to Block Bolt	53 N.m	39 lb ft
Thermostat Housing to Block Bolts	10 N.m	89 lb in
Throttle Body Bolt	10 N.m	89 lb in
Throttle Body Nut	10 N.m	89 lb in
Throttle Body Stud	6 N.m	53 lb in
Timing Adjustable Chain Guide Bolt	10 N.m	89 lb in
Timing Chain Oil Nozzle Bolt	10 N.m	89 lb in
Timing Fixed Chain Guide Bolt	15 N.m	11 lb ft
Timing Upper Chain Guide Bolt	10 N.m	89 lb in
Vent Tube to Cylinder Head	15 N.m	11 lb ft
Water Jacket Drain Plug	20 N.m	15 lb ft
Water Pipe Support Bracket Bolt	10 N.m	89 lb in
Water Pump Access Cover Bolt	7 N.m	62 lb in
Water Pump/Balance Shaft Chain Tensioner Bolt	10 N.m	89 lb in
Water Pump Bolts	25 N.m	18 lb ft
Water Pump Sprocket Bolt	10 N.m	89 lb in

Engine Mechanical Specifications

Application	Specification
Application	Metric	English
General Data
Engine Type	Inline 4 Cylinder
Displacement	2.4 L	146 CID
RPO	LE5 LAT
Liter (VIN)	LE5: B LAT: 5
Bore	87.992-88.008 mm	3.4668-3.4675 in
Stroke	98 mm	3.861 in
Compression Ratio	10:01
Balance Shaft
Bearing Clearance	0.030-0.060 mm	0.0012-0.0024 in
Bearing Diameter - Inside - Carrier	20.050-20.063 mm	0.7894-0.7899 in
Bearing Diameter - Outside - Carrier	41.975-41.995 mm	1.6526-1.6534 in
Bearing Journal Diameter	20.000-20.020 mm	0.7874-0.7882 in
Bushing Clearance	0.033-0.102 mm	0.0013-0.0040 in
Bushing Diameter - Inside	36.776-36.825 mm	1.4479-1.4498 in
Bushing Journal Diameter	36.723-36.743 mm	1.4458-1.4466 in
End Play	0.050-0.300 mm	0.0020-0.0118 in
Block
Balance Shaft Bearing Bore Diameter - Carrier	42.000-42.016 mm	1.6535-1.6542 in
Balance Shaft Bushing Bore Diameter	40.763-40.776 mm	1.6048-1.6054 in
Crankshaft Main Bearing Bore Diameter	64.068-64.082 mm	2.5224-2.5229 in
Cylinder Bore Diameter	87.992-88.008 mm	3.4668-3.4675 in
Cylinder Bore Out-of-Round - Maximum	0.010 mm	0.0004 in
Cylinder Bore Taper - Maximum	0.010 mm	0.0004 in
Cylinder Head Deck Surface Flatness - Longitude	0.050 mm	0.002 in
Cylinder Head Deck Surface Flatness - Overall	0.08 mm	0.0031 in
Cylinder Head Deck Surface Flatness - Transverse	0.030 mm	0.0012 in
Camshaft
Camshaft End Play	0.040-0.144 mm	0.0016-0.0057 in
Camshaft Journal Diameter	26.935-26.960 mm	1.0604-1.0614 in
Camshaft Thrust Surface	21.000-21.052 mm	0.8268-0.8252 in
Connecting Rod
Connecting Rod Bearing Clearance	0.029-0.073 mm	0.0011-0.0029 in
Connecting Rod Bore Diameter - Bearing End	52.118-52.134 mm	2.0519-2.05252 in
Connecting Rod Bore Diameter - Pin End	20.007-20.021 mm	0.7877-0.7882 in
Connecting Rod Side Clearance	0.070-0.370 mm	0.0028-0.0146 in
Connecting Rod Straightness - Bend - Maximum	0.021 mm	0.0083 in
Connecting Rod Straightness - Twist - Maximum	0.04 mm	0.0157 in
Crankshaft
Connecting Rod Journal Diameter	49.000-49.014 mm	1.9291-1.9297 in
Crankshaft End Play	0.050-0.380 mm	0.0012-0.0150 in
Crankshaft Main Bearing Clearance	0.031-0.067 mm	0.0012-0.0026 in
Crankshaft Main Journal Diameter	55.994-56.008 mm	2.2045-2.2050 in
Cylinder Head
Surface Flatness - Block Deck - Longitude	0.050 mm	0.002 in
Surface Flatness - Block Deck - Overall	0.1 mm	0.004 in
Surface Flatness - Block Deck - Transverse	0.030 mm	0.0012 in
Valve Guide Bore - Exhaust	6.000-6.012 mm	0.2362-0.2367 in
Valve Guide Bore - Intake	6.000-6.012 mm	0.2362-0.2367 in
Valve Lifter Bore Diameter - Stationary Lash Adjusters	12.013-12.037 mm	0.4730-0.4739 in
Lubrication System
Oil Pressure - Minimum - @1000 RPM	344.75-551.60 kPa	50-80 psi
Oil Capacity	4.8L	5.0 quarts
Piston Rings
Piston Ring End Gap - First Compression Ring	0.15-0.30 mm	0.006-0.012 in
Piston Ring End Gap - Second Compression Ring	0.20-0.45 mm	0.008-0.018 in
Piston Ring End Gap - Oil Control Ring - Rails	0.15-0.51 mm	0.006-0.020 in
Piston Ring to Groove Clearance - First Compression Ring	0.04-0.08 mm	0.0015-0.0031 in
Piston Ring to Groove Clearance - Second Compression Ring	0.030-0.070 mm	0.0012-0.0030 in
Piston Ring to Groove Clearance - Oil Control Ring	0.027-0.176 mm	0.0011-0.0069 in
Piston Ring Thickness - First Compression Ring	1.170-1.190 mm	0.0461-0.0469 in
Piston Ring Thickness - Second Compression Ring	1.471-1.490 mm	0.0579-0.0587 in
Piston Ring Thickness - Oil Control Ring - Rail - Maximum	0.473 mm	0.0186 in
Piston Ring Thickness - Oil Control Ring - Spacer	1.460-1.537 mm	0.0575-0.0605 in
Pistons and Pins
Pin - Piston Pin Clearance to Connecting Rod Bore	0.007-0.026 mm	0.0003-0.0010 in
Pin - Piston Pin Clearance to Piston Pin Bore	0.004-0.014 mm	0.0002-0.0006 in
Pin - Piston Pin Diameter	19.995-20.000 mm	0.7872-0.7874 in
Pin - Piston Pin End Play	0.410-1.266 mm	0.0161-0.0498 in
Piston - Piston Diameter - @14.5 mm up	87.967-87.982 mm	3.4633-3.4638 in
Piston - Piston Pin Bore Diameter	20.004-20.009 mm	0.7876-0.7878 in
Piston - Piston Ring Groove Width - Oil Control	2.51-2.53 mm	0.0988-0.0996 in
Piston - Piston Ring Groove Width - Second	1.52-1.54 mm	0.0598-0.0606 in
Piston - Piston Ring Groove Width - Top	1.23-1.25 mm	0.0484-0.0492 in
Piston - Piston to Bore Clearance	0.010-0.041 mm	0.0004-0.0016 in
Valve System
Valves - Valve Face Runout - Maximum	0.04 mm	0.0016 in
Valves - Valve Seat Runout - Maximum	0.05 mm	0.0020 in
Valves - Valve Stem Diameter - Exhaust	5.935-5.950 mm	0.2337-0.2343 in
Valves - Valve Stem Diameter - Intake	5.955-5.970 mm	0.2344-0.2355 in
Valves - Valve Stem to Guide Clearance - Exhaust	0.050-0.077 mm	0.0020-0.0026 in
Valves - Valve Stem to Guide Clearance - Intake	0.030-0.057 mm	0.0012-0.0022 in
Valve Lifters - Valve Lifter Diameter - Stationary Lash Adjuster	11.986-12.000 mm	0.0005-0.0020 in
Valve Lifters - Valve Lifter-to-Bore Clearance - Stationary Lash Adjuster	0.013-0.051 mm	3.2210-3.2299 in
Valve Springs - Valve Spring Load - Closed - @22.5 mm	525.0-575.0 N. - Eng Spec.
Valve Springs - Valve Spring Load - Open - @32.5 mm	245.0-271.0 N. - Eng Spec.

Engine Mechanical Specifications