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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 490 (ENGINE MECHANICAL - 2.2L (LN2))SPECIFICATIONSENGINE MECHANICAL SPECIFICATIONS
1999 GMC Forward Control 5.7 R, Automatic

Engine Mechanical Specifications

1999 GMC Forward Control 5.7 R, AutomaticSECTION Engine Mechanical Specifications
WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE MECHANICAL SPECIFICATIONS - 2.2L

Application Specification
Metric English
General Data
  Engine Type L-4
  Displacement 2.2L 134 CID
  RPO LN2
  VIN 4
  Bore 89 mm 3.5 in
  Compression Ratio 9:01
  Firing Order 1-3-4-2
Block
  Cylinder Bore Diameter 88.991-89.009 mm 3.5036-3.5043 in
  Cylinder Bore Out-of-Round 0.013 mm 0.0005 in
  Cylinder Bore Taper 0.013 mm 0.0005 in
  Cylinder Head Deck Surface Flatness 0.254 mm 0.010 in
Camshaft
  Camshaft Journal Diameter 47.453-47.478 mm 1.868-1.869 in
  Camshaft Journal to Bearing Clearance 0.038-0.088 mm 0.0015-0.0035 in
  Camshaft Lobe Lift - Exhaust 6.687 mm 0.2633 in
  Camshaft Lobe Lift - Intake 6.687 mm 0.2633 in
Crankshaft
  Connecting Rod Journal Diameter 50.758-50.784 mm 1.9983-1.9994 in
  Connecting Rod Journal Out-of-Round 0.005 mm 0.00019 in
  Connecting Rod Journal Taper 0.005 mm 0.00019 in
  Crankshaft End Play 0.0511-0.1780 mm 0.002-0.007 in
  Crankshaft Main Bearing Clearance 0.015-0.047 mm 0.0006-0.0019 in
  Crankshaft Main Journal Diameter 63.360-63.384 mm 2.4945-2.4954 in
  Crankshaft Main Journal Out-of-Round 0.005 mm 0.00019 in
  Crankshaft Main Journal Taper 0.005 mm 0.00019 in
Cylinder Head
  Surface Flatness - Block Deck - Overall Maximum 0.08 mm 0.003 in
  Surface Flatness-Block Deck-Maximum within any 150 mm (5.92 in) Length 0.05 mm 0.002 in
  Surface Flatness - Block Deck - Maximum within 25 mm (0.984 in) Length 0.025 mm 0.001 in
Lubrication System
  Oil Capacity - without Filter 3.473 L 3.5 qt
  Oil Pressure - Minimum 348 kPa 56 psi 3,000 RPM
Oil Pump
  Gear Diameter - Drive Gear 38.05-38.10 mm 1.498-1.50 in
  Gear Diameter - Idler 38.05-38.10 mm 1.498-1.50 in
  Gear Pocket - Depth 30.36-30.44 mm 1.195-1.198 in
  Gear Pocket - Diameter 38.18-38.25 mm 1.503-1.506 in
  Gears Lash 0.094-0.195 mm 0.004-0.008 in
  Relief Valve-to-Bore Clearance 0.038-0.089 mm 0.0015-0.0035 in
Piston Rings
  Piston Ring End Gap - First Compression Ring 0.25-0.50 mm 0.010-0.020 in
  Piston Ring End Gap - Second Compression Ring 0.30-0.45 mm 0.0012-0.0177 in
  Piston Ring End Gap - Oil Control Ring 0.25-0.76 mm 0.010-0.030 in
  Piston Ring to Groove Clearance - First Compression Ring 0.05-0.09 mm 0.0020-0.0035 in
  Piston Ring to Groove Clearance - Second Compression Ring 0.02-0.08 mm 0.0008-0.0031 in
  Piston Ring to Groove Clearance - Oil Control Ring 0.013-0.220 mm 0.0005-0.0087 in
Pistons and Pins
  Pin - Piston Pin Clearance to Connecting Rod Bore 0.021-0.0511 mm 0.0008-0.002 in
  Pin - Piston Pin Clearance to Piston Pin Bore 0.0079-0.018 mm 0.00031-0.00071 in
  Pin - Piston Pin Diameter 20.3200-20.3251 mm 0.8000-0.8002 in
Valve System
  Valves - Valve Face Angle 45°C
  Valves - Valve Face Runout 0.038 mm 0.0014 in
  Valves - Valve Head Diameter - Exhaust 37 mm 1.45 in
  Valves - Valve Head Diameter - Inlet 44 mm 1.73 in
  Valve Length - Exhaust 127 mm 5.00 in
  Valve Length - Inlet 134.23 mm 5.28 in
  Valve Seat Width - Exhaust 3.51 mm 0.138 in
  Valve Seat Width - Inlet 2.80 mm 0.110 in
  Valve Stem-to-Guide Clearance - Exhaust 0.035-0.075 mm 0.0014-0.0029 in
  Valve Stem-to-Guide Clearance - Inlet 0.019-0.053 mm 0.0007-0.0020 in
  Valve Rocker Arm Ratio 1.6
  Valve Spring Free Length 48.7 mm 1.91 in
  Valve Spring Load - Closed 361-325 at 40.64 mm 81.2-73.1 lb at 1.600 in
  Valve Spring Load - Open 957-893 N at 29.85 mm 215-201 lb at 1.175 in
RENDER: 1.0x

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