Spezifikationen LD9 2.4L Twin Cam

General Engine Data

Engine Type: Inline 4 Cylinder
Displacement: 2.4 Liter (146 CID)
RPO: LD9
Bore: 90 mm 3.54 in
Stroke: 94 mm 3.70 in
Compression Ratio: 9.5:1 (96-98)/ 9.7:1 (99-02)
Firing Order: 1-3-4-2
Horsepower: 150 @ 5600 rpm
Torque: 155 @ 2400-4400 rpm
Oil Pressure @ 3000 RPM: 207 Kpa 30 psi min.
Oil Pressure @ 900 RPM: 69 Kpa 10 psi min.
Recommended octane: 87
EPA Mileage Estimates: (City/Highway):

• Manual: 23 mpg / 33 mpg
• Automatic: 22 mpg / 30 mpg

Fuel Delivery: Sequential Fuel Injection (SFI)

Thermostat opening temperature: 180 degrees F
Emissions: Low emissions vehicle equipped with single catalyst and Positive Crankcase Ventilation

Fluids and Capacities
All capacities are approximate; add fluid as necessary.

Brake Fluid: Delco Supreme 11 or DOT-3 Equivalent
Clutch Fluid: Delco Supreme 11 or DOT-3 Equivalent
Engine Oil Type SAE 5W-30
Engine Oil Capacity 4 qts
Coolant: Dexcool antifreeze – 50/50 mix with drinkable water Coolant Capacity 10.7 quarts
Auto trans fluid: DEXRON-III Automatic Transmission Fluid
Auto trans fluid capacity: 9.5 qts
Manual trans fluid: 2000-2002 DEXRON-III Automatic Transmission Fluid
Manual trans fluid capacity: 2000-2002 1.8 qts
Refrigerant: R-134a
Power Steering Fluid: GM p/n 1050017
Chassis grease: SAE NLGI no. 2 chassis grease

Year Differences

1999.5 model year

• Smaller starter
• One wire first O2 sensor
• High impedance injectors
• No EGR valve
• Flat top pistons
• 9.7:1 CR
• Better intake manifold design. Doesn’t have flange on the inside plenum like 00-02 years.
• New oiling passages
• Small knock sensor
• Head casting number is 779
• New style water-pump

2000-2002 model year

• Smaller starter
• Two wire front O2 sensor
• High impedance injectors
• No EGR valve
• Flat top pistons
• 9.7:1 CR
• New oiling passages
• Small knock sensor
• Head casting number is 779
• New style water-pump
• Belt tensioner changed

Torque Specifications

NOTE: Some specs are FOOT pounds, some are INCH pounds, do not confuse the two. And keep in mind some common sense is your best friend if you come across something that says valve cover is torqued to 75 lb ft, common sense should tell you that is way to much. Torque spec listings are not always 100% accurate, just use your head.

Balance Shaft Cover Nut and Bolt: 115 lb in
Balance Shaft Driven Sprocket Bolt (left hand thread): 30 lb ft + 45°
Balance Shaft Housing Bolts 8 mm hex: 89 lb in + 40°
Balance Shaft Housing Bolts 10 mm hex: 11 lb ft + 40°
Balance Shaft to block Bolts 13 mm hex: 18 lb ft + 70°
Balance Shaft to block Bolts 15 mm hex: 39 lb ft
Balance Shaft to Block Bolts 18 mm hex: 30 lb ft + 60°
Camshaft (exhaust) Rear Cover: 124 lb in
Camshaft Position Sensor Bolt: 89 lb in
Camshaft Sprocket to the Camshaft Bolt: 52 lb ft
Connecting Rod Nuts: 18 lb ft + 80°
Coolant Outlet to Cylinder Head: 19 lb ft
Coolant Pump Cover to the Block: 19 lb ft
Coolant Pump to the Coolant Pump Cover: 124 lb in
Coolant Pump to the Timing Chain Housing: 19 lb ft
Crankshaft Balancer to the Crankshaft: 129 lb ft + 90°
Crankshaft Bearing Cap Bolts: 15 lb ft + 90°
Crankshaft Position Sensor to Block: 80 lb in
Cylinder Head Threaded Plug: 19 lb ft
EGR Pipe to the EGR Adapter: 19 lb ft
Engine Coolant Air Bleed Pipe: 124 lb in
Engine Coolant Air Bleed Pipe Nut: 31 lb ft
Engine Coolant Temperature Sensor to the Coolant Outlet: 97 lb in
Engine Lift Bracket: 68 lb ft
Engine Mount Bracket Adapter to Block Bolt Auto Trans: 44 lb ft + 60°
Engine Mount Bracket Adapter to Block Bolt Manual Trans: 44 lb ft + 60°
Engine Mount (right hand side) to the Body Support Bolt: 49 lb ft
Engine Mount (right hand side) to the Body Support Nut: 32 lb ft
Engine Mount (right hand side) to the Engine Mount Bracket Bolts: 46 lb ft
Engine Mount Strut: 74 lb ft
Engine Mount Strut Bracket Bottom Bolts: 96 lb ft
Engine Mount Strut Bracket Front Bolts: 49 lb ft
EVAP Canister Purge Valve Solenoid Bracket Bolt: 72 lb in
Exhaust Manifold Brace to the Exhaust Manifold Bolt: 41 lb ft
Exhaust Manifold Brace to the Oil Pan Nuts: 19 lb ft
Exhaust Manifold to the Cylinder Head Nut: 11 lb ft
Exhaust Manifold to the Cylinder Head Studs: 97 lb in
Exhaust Manifold Upper Heat Shield to the Manifold Bolts: 124 lb in
Flywheel to Clutch Cover: 15 lb ft + 45°
Flywheel to the Converter: 49 lb ft
Flywheel to the Crankshaft: 22 lb ft + 45°
Front Cover to the Timing Chain Housing: 106 lb in
Fuel Pipe Bracket to the Camshaft Housing: 11 lb ft +30°
Fuel Pipe to the Fuel Rail Nut: 22 lb ft
Fuel Rail to the Camshaft Housing: 19 lb ft
Ignition Coil and Module Assembly to the Camshaft Housings: 16 lb ft
Intake Manifold to the Cylinder Head Bolts/Nuts: 18 lb ft
Intake Manifold to the Cylinder Head Studs: 97 lb in
Knock Sensor: 15 lb ft
Oil/Air Separator To Block Bolts: 18 lb ft
Oil Dipstick Tube Bolt/Screw: 71 lb in
Oil Filter Connector to the Block: 21 lb ft
Oil Filter to the Block: 3/4 to one complete turn after gasket contact
Oil Pan Bolts: 18 lb ft
Oil Pan Bolts, Second Set: 106 lb in
Oil Pan Drain Plug: 19 lb ft
Oil Pan Studs: 19 lb ft
Oil Passage Plug Bolt: 22 lb ft
Oil Passage Plugs, 1/4x18: 15 lb ft
Oil Passage Plugs, 3/8x18: 22 lb ft
Oil Passage Plugs, Block 1/8x27: 89 lb in
Oil Pressure Switch: 124 lb in
Oil Pump Cover to the Oil Pump Housing Short Bolt: 89 lb in
Oil Pump to the Balance Shaft Housing Long Bolts: 106 lb in
Oxygen Sensor To Exhaust Manifold: 31 lb ft
Power steering Pipe to the Pump Nut: 20 lb ft
Power steering Pump to the Cam Carrier Bolts: 19 lb ft
Rear Crankshaft Seal Housing to Block: 106 lb in
Spark Plugs to the Cylinder Head: 13 lb ft
Starter to the Block Bolt: 66 lb ft
Tensioner to Tensioner Bracket Nut: 40 lb ft
Throttle Body to the Intake Manifold: 89 lb in
Thrust Plate to the Balance Shaft Housing: 115 lb in
Timing Chain Housing to the Block Bolts/Studs: 21 lb ft
Timing Chain Housing to the Camshaft Housings: 19 lb ft
Timing Chain Tensioner to Housing and Block: 89 lb in
Transaxle To Block Bolt: 43 lb ft
Transaxle To Block Nut: 49 lb ft
Transaxle To Block Stud: 115 lb in