GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

General Data

  • Engine Type

4 Cyclinder (In-Line)

  • Displacement

1,206 cm³

  • Bore Stroke

69.7-79  mm

2.7441- 3.1102 in

  • Compression Ratio

10.5±0.2:1

  • Firing Order

1-3-4-2

Cylinder Bore

  • Diameter

69.7 mm

2.7441 in

  • Out of Round (Maximum)

0.0065  mm

0.00025 in

  • Taper (Maximum)

0.07 x 30°

Piston

  • Diameter

69.7 mm

2.7441 in

  • Clearance to Bore

0.035±0.010 mm

(0.0013±0.0177 in)

Piston Rings

Piston Ring End Gap

  • Top Compression

0.15-0.30 mm

0.0059-0.0118 in

  • 2nd Compression

0.3-0.4 mm

0.0118-0.0177 in

Groove Clearance

  • Top Impression

0.02-0.06 mm

0.00078-0.00236 in

  • 2nd Impression

0.06-0.1 mm

0.00236-0.00393 in

Piston Pin

  • Diameter

16.995-17.000 mm

0.6691-0.6693 in

  • Pin Off-Set

0.006±0.019 mm

0.00078±0.00236 in

Camshaft

End Play

0.08-0.26 mm

0.0032-0.0102 in

Journal OD

  • No. 1

23.939-23.96 mm

0.9425-0.9433 in

  • No. 2

23.939-23.96 mm

0.9425-0.9433 in

  • No. 3

23.939-23.96 mm

0.9425-0.9433 in

  • No. 4

23.939-23.96 mm

0.94250-0.9433 in

  • No. 5

23.939-23.96 mm

0.9425-0.9433 in

Journal ID

  • No. 1

23-23.021 mm

0.9055-0.9063 in

  • No. 2

23-23.021 mm

0.9055-0.9063 in

  • No. 3

23-23.021 mm

0.9055-0.9063 in

  • No. 4

23-23.021 mm

0.9055-0.9063 in

  • No. 5

23-23.021 mm

0.9055-0.9063 in

Crankshaft

Main Journal

  • Diameter (All)

48.982-49.000 mm

1.9284-1.9291 in

  • Main Bearing Clearance (All)

0.020-0.040 mm

0.00079-0.00158 in

  • Crankshaft End Play

0.08-0.26 mm

0.0032-0.0102 in

Connecting Rod Journal

  • Diameter (All)

41.000-41.018 mm

1.6142-1.6149 in

  • Rod Bearing Clearance (All)

0.02-0.04 mm

0.0008-0.0016 in

  • End Play

0.1-0.45 mm

0.0039-0.0177 in

Valve System

Seat Inner Diameter

  • Intake

23.862 mm

0.9394 in

  • Exhaust

21.079 mm

0.8299 in

  • Valve Guide Inside Diameter (All)

5.0-5.012 mm

0.1968-0.1973 in

Valve Stem Diameter

  • Intake

4.972±0.007 mm

0.9657-0.0002 in

  • Exhaust

4.963-0.007 mm

0.1954-0.0002 in

Valve Length

  • Intake

99.17±0.225 mm

3.904±0.009 in

  • Exhaust

100.01±0.225 mm

3.937±0.009 in

Valve Spring

  • Free Length

43.57 mm

1.715 in

  • Valve Closed

260±13 N (191±9.6 lbs) @ 32 mm (1.25 in)