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Home >> Chevrolet >> 2007 >> Optra LT, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.0L (L34 GMDAT) >> Specifications >> Engine Mechanical Specifications

Engine Mechanical Specifications

Application Specification
Metric English
Camshaft 
  • Bearing Journal OD
42.455-43.470 mm 1.6714-1.7114 in
  • Camshaft Cap to Bearing Journal Clearance
0.04-0.144 mm 0.0015-0.0056 in
  • Lift - Exhaust
9.2 mm 0.36 in
  • Lift - Intake
9.2 mm 0.36 in
Connecting Rod Journal 
  • Diameter - All
48.970-48.988 mm 1.9279-1.9287 in
  • Out of Round - Maximum
0.004 mm 0.00015 in
  • Rod Bearing Clearance
0.013-0.041 mm 0.0005-0.0016 in
  • Rod Bearing Play
0.006-0.031 mm 0.00023-0.00122 in
Crankshaft 
  • End Play
0.070-0.302 mm 0.0027-0.0118 in
  • Main Bearing Clearance - All
0.015-0.040 mm 0.00059-0.00157 in
  • Main Journal Diameter - All
57.974-57.995 mm 2.2788-2.2832 in
  • Radial Runout - Shaft Support on No. 1 and No. 5 Bearings Measured at No. 3 Journal
0.03 mm 0.00118 in
  • Service Oversize, Available in 2 Sizes
0.25 and 0.5 mm 0.00098 and 0.019 in
Cylinder Bore 
  • Block Face Distortion
0.01 mm Max 0.00039 in
  • Cylinder Bore Taper - Maximum
0.013 mm 0.0005 in
  • Diameter
85.975-86.025 mm 3.384-3.386 in
  • Out of Round - Maximum
0.013 mm 0.0005 in
  • Oversize - Measure Replacement Piston before Re-boring
Available in 0.50 mm to Suit Bore 0/019 in
  • Service Replacement Standard Bore
4 Piston, Pin, and Ring Assemblies Available
Cylinder Head 
  • Maximum Valve Stem Protrusion
39.2 mm 1.544 in
  • Minimum Overall Height After Machining
133.9 mm 5.271 in
  • Overall Height
133.975 - 134.025 mm 5.2746-6.2766 in
  • Valve Guide Height
13.7-14.0 mm 0.53-0.55 in
General Data 
Bore 86 mm 3.4 in
  • Bore Stroke
86 X 86 mm 3.38 in X 3.38 in
  • Compression Ratio
9.6:1
  • Displacement
1 998 cm3 121 in3
  • Engine Type
4 Cylinder-In-Line
  • Firing Order
1-3-4-2
  • Lubricating Type
Forced Feed
  • Maximum Power - at 5,400 RPM
95 kW 127.4 hp
  • Maximum Torque - at 4,000 RPM
178 N.m 131 lb ft
  • Oil Filter Type
Cartridge - Full Flow
  • Oil Pan Capacity - with Oil Filter
4.0 liter 4.2 quarts
  • Oil Pump Type
Rotary
Piston 
  • Clearance to Bore
0.010-0.030 mm 0.00039-0.0011 in
  • Diameter
85.955-86.485 mm 3.384-3.404 in
  • Maximum Piston Protrusion
0.5 mm 0.019 in
  • Piston Taper
0.013 mm 0.0005 in
Piston Pin 
  • Clearance - In Piston
0.0035-0.0140 mm 0.00013-0.00055 in
  • Clearance - In Rod
Interference Fit in Rod
  • Diameter
20.9970-20.9985 mm 0.82665-0.82671 in
  • Length
61.5 mm 2.42 in
  • Pin Offset - Toward Thrust Side
1.0 mm 0.04 in
Oil Pump 
  • End Clearance
0.03-0.10 mm 0.001-0.003 in
  • Gear Lash
0.10-0.20 mm 0.003-0.007 in
  • Inner Gear to Crescent
0.35-0.40 mm 0.013-0.015 in
  • Outer Gear to Body
0.11-0.19 mm 0.004-0.007 in
  • Outer Gear to Crescent
0.40-0.50 mm 0.015-0.01 in
Piston Rings 
  • Oil
0.25-0.76 mm 0.01-0.03 in
  • Ring, End Gap, Second Compression
0.3-0.5 mm 0.011-0.019 in
  • Ring, End Gap, Top Compression
0.2-0.35 mm 0.008-0.014 in
Sealants and Adhesives 
  • Camshaft Carrier-to-Cylinder Head
HN 1581 (LOCTITE® 515)
  • Coolant Jacket Caps and Plugs - Freeze Plugs
HN 1756 (LOCTITE® 176)
  • Exhaust Manifold Studs/Nuts
Anti-seize Compound (HMC Spec HN 1325)
  • Oil Gallery Plug
HN 1256 (LOCTITE® 242)
  • Oil Pan Bolts
HN 1256 (LOCTITE® 242)
  • Oil Pan Pickup Tube Bolts
HN 1256 (LOCTITE® 242)
  • Oil Pump Bolts
HN 1256 (LOCTITE® 242)
  • Rear Main Bearing Cap
GE p/n RTV 159
Valve System 
  • Face Runout - Maximum, All
0.03 mm 0.001 in
  • Seat Runout - Maximum, All
0.03 mm 0.001 in
  • Valve Diameter Intake
31.9-32.1 mm 1.2559-1.2637 in
  • Valve Diameter Intake - Exhaust
28.9-29.1 mm 1.1378-1.1456 in
  • Valve Guide Inside Diameter
6.000-6.012 mm 0.236-0.237 in
  • Valve Lash Compensators
Hydraulic
  • Valve Face Angle
44 degrees
  • Valve Stem Diameter Intake
5.945-5.960 mm 0.234-0.235 in
  • Valve Stem Diameter Intake - Exhaust
5.945-5.960 mm 0.234-0.235 in
  • Valve Seat Angle
45 degrees
  • Valve Seat Width Intake
1.0-1.5 mm 0.039-0.059 in
  • Valve Seat Width Intake - Exhaust
1.7-2.2 mm 0.066-0.086 in
Valve Guide Reaming Table

Size Reamer Production Code Service Code
Normal - - K
1.9 mm (0.75 in) KM-805  1 K1
- - 2 K2