Engine Mechanical Specifications. Pontiac Sunfire 1997

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 1997 🢒 Sunfire 🢒 Engine 🢒 Engine Mechanical - 2.2L 🢒 Engine Mechanical Specifications

Application	Specification
Application	Metric	English
General Data
Engine Type	L-4
Displacement	2.2 L (134 CID)
RPO - Engine VIN Code	LN2 - 4
Bore	89 mm	3.5 in
Stroke	88 mm	3.46 in
Compression Ratio	9:1
Firing Order	1-3-4-2
Oil Pressure @ 65°C (150°F)	348 kPa -- 56 psi @ 3000 RPM
Camshaft
Lobe Lift - Intake and Exhaust	7.309 mm	0.288 in
Journal Diameter	47.45-47.48 mm	1.868-1.869 in
Journal Clearance	0.026-0.101 mm	0.001-0.0039 in
Crankshaft
Main Journal Diameter	63.360-63.384 mm	2.4945-2.4954 in
Main Journal Taper	0.005 mm	0.00019 in
Main Journal Out Of Round	0.005 mm	0.00019 in
Main Bearing Clearance	0.015-0.047 mm	0.0006-0.0019 in
Crankshaft End Play	0.0511-0.1780 mm	0.002-0.007 in
Rod Bearing Journal Diameter	50.758-50.784 mm	1.9983-1.9994 in
Rod Bearing Journal Taper	0.005 mm	0.00019 in
Rod Bearing Journal Out Of Round	0.005 mm	0.00019 in
Rod Bearing Journal Clearance	0.025-0.079 mm	0.00098-0.0031 in
Rod Side Clearance	0.10-0.38 mm	0.0039-0.0149 in
Cylinder Bore
Diameter	88.991-89.009 mm	3.5036-3.5043 in
Out Of Round Maximum	0.013 mm	00.005 in
Taper - Thrust Side Maximum	0.013 mm	0.005 in
Cylinder Head
Cylinder Head Deck Face Overall Maximum Flatness	0.08 mm	0.003 in
Cylinder Head Deck Face Maximum Flatness within any 150 mm (5.92 in) length	0.05 mm	0.002 in
Cylinder Head Deck Face Maximum Flatness within 25 mm (0.984 in) length	0.025 mm	0.001 in
Lubrication System
Oil Capacity	3¾ L	4 qts
Oil Pressure (3000 RPM @ 65° C (150° F)	348 kPa	56 psi minimum
Oil Pump
Outer Gerotor Thickness	17.087-17.099 mm	0.6727-0.6731 in
Oil Pump Drive to Driven Gear Backlash	0.23-0.51 mm	0.0091-0.0201 in
Valve to Bore Clearance	0.038-0.089 mm	0.0015-0.0035 in
Gear Lash	0.094-0.195 mm	0.004-0.008 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
Gear Length - Drive Gear	30.45-30.48 mm	1.199-1.20 in
Gear Length - Idler	30.45-30.48 mm	1.199-1.20 in
Gear Diameter - Drive Gear	38.05-38.10 mm	1.498-1.50 in
Gear Diameter - Idler	38.05-38.10 mm	1.498-1.5 in
Gear Side Clearance (Drive Gear)	0.038-0.102 mm	0.001-0.004 in
Gear Side Clearance (Idler)	0.038-0.102 mm	0.001-0.004 in
End Clearance	0.05-0.18 mm	0.002-0.007 in
Piston
Clearance	0.015-0.045 mm	0.0007-0.0017 in
Piston Pin
Diameter	20.320-20.325 mm	0.08000-0.8002 in
Clearance In Piston	0.008-0.018 mm	0.0003-0.0007 in
Fit In Rod	0.025-0.045 mm	0.00098-0.0017 in
Piston Ring Compression
Top Groove Side Clearance	0.05-0.027 mm	0.0019-0.0027 in
Second Groove Side Clearance	0.05-0.027 mm	0.0019-0.0027 in
Top Ring Gap	0.25-0.50 mm	0.010-0.020 in
Second Ring Gap	0.25-0.50 mm	0.010-0.020 in
Piston Ring Oil
Groove Clearance	0.05-0.021 mm	0.0019-0.0082 in
Gap	0.25-0.76 mm	0.010-0.040 in
Valve System
Rocker Arm Ratio	1.5
Valve Face Angle	45 degrees
Valve Face Runout	0.03 mm	0.0012 in
Valve Margin	0.08 mm	0.031 in
Valve Stem to Guide Clearance Intake	0.025-0.069 mm	0.0010-0.0027 in
Valve Stem to Guide Clearance Exhaust	0.035-0.081 mm	0.0014-0.0031 in
Valve Springs Free Length	49.5 mm	1.95 in
Valve Springs Load - Closed	332-362 N·m @ 43.43	75-81 lb @ 1.710
Valve Springs Load - Open	979-1049 N·m @ 32.47	220-236 lb @ 1.278