Engine Mechanical Specifications. Pontiac G3 2009

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2009 🢒 G3 🢒 Preface 🢒 Dangers, Warnings, and Cautions 🢒 Engine Mechanical Specifications

Table 1:

Application	Specification
Application	Metric	English
General Data
Engine Type	4 Cylinder - In-Line
Displacement	1 498 cm³	91.44 in³
Bore Stroke	76.5x81.5 mm	3.01x3.21 in
Compression Ratio	9.5:1
Firing Order	1-3-4-2
Maximum Power - At 5,600 RPM	62 kw (83.1 hp)
Maximum Torque - At 3,000 RPM	128 N·m	94.4 lb ft
Cylinder Bore
Diameter	76.5 mm	3.01 in
Out of Round - Maximum	0.0065 mm	0.00025 in
Taper - Maximum	0.0065 mm	0.00025 in
Piston
Diameter	77.870 mm	3.066 in
Clearance to Bore	0.02-0.04 mm	0.0008-0.0016 in
Piston Rings
Ring, End Gap - Top Compression	0.3-0.5 mm	0.012-0.020 in
Ring, End Gap - Second Compression	0.3-0.5 mm	0.012-0.020 in
Groove Clearance - Top Impression	0.060-0.092 mm	0.0024-0.0036 in
Groove Clearance - Second Compression	0.050-0.082 mm	0.0020-0.0032 in
Piston Pin
Diameter	17.990-17.995 mm	0.7083-0.7085 in
Pin Off-Set	0.4-0.6 mm	0.016-0.024 in
Camshaft
Lift Intake	4.773 mm	0.188 in
Lift Exhaust	5.267 mm	0.207 in
End Play	0.09-0.21 mm	0.0035-0.0082 in
Journal OD - No. 1	39.435-39.455 mm	1.552-1.553 in
Journal OD - No. 2	39.685-39.705 mm	1.562-1.553 in
Journal OD - No. 3	39.935-39.955 mm	1.572-1.573 in
Journal OD - No. 4	40.185-40.205 mm	1.582 in
Journal OD - No. 5	40.435-40.455 mm	1.591-1.592 in
Bearing OD - No. 1	39.5-39.525 mm	1.555-1.556 in
Bearing OD - No. 2	39.75-39.775 mm	1.564-1.565 in
Bearing OD - No. 3	40-40.025 mm	1.574-1.575 in
Bearing OD - No. 4	40.25-40.275 mm	1.584-1.585 in
Bearing OD - No. 5	40.5-40.525 mm	1.594-1.595 in
Crankshaft
Main Journal - Diameter - All	54.982-54.994 mm	2.164-2.165 in
Taper - Maximum	0.005 mm	0.0001 in
Out of Round - Maximum	0.004 mm	0.0001 in
Main Bearing Clearance - All	0.026-0.046 mm	0.001-0.00181 in
Crankshaft End Play	0.1 mm	0.003 in
Connecting Rod Journal - Diameter - All	42.971-42.987 mm	1.691-1.692 in
Taper - Maximum	0.005 mm	0.0001 in
Out of Round - Maximum	0.004 mm	0.0001 in
Rod Bearing Clearance - All	0.019-0.07 mm	0.0007-0.0027 in
Rod Side Clearance	0.07-0.242 mm	0.0027-0.009 in
Valve Stem
Valve Lash Compensators	Hydraulic
Face Angle - All	45.87-46.12 degrees
Seat Angle - All	45 degrees
Seat Runout - Maximum, All	0.03 mm	0.0012 in
Face Runout - Maximum, All	0.03 mm	0.0012 in
Seat Width - Intake	1.3-1.5 mm	0.051-0.059 in
Seat Width - Exhaust	1.6-1.8 mm	0.063-0.071 in
Valve Guide Inside Diameter - All	6-6.015 mm	0.236-0.237 in
Valve Stem Diameter - Intake	5.97-5.984 mm	0.232-0.238 in
Valve Stem Diameter - Exhaust	5.96-5.974 mm	0.231-0.237 in
Valve Diameter - All - Intake	37.9-38.1 mm	1.486-1.494 in
Valve Diameter - Exhaust	30.9-31.1 mm	1.216-1.224 in
Valve Spring Free Length - SOHC	40.9 mm	1.61 in
Valve Spring Loads - Valve Open @ 21.5 mm (0.846 in)	600-650 N·m	443-479 lb ft
Valve Spring Loads - Valve Closed @ 31.5 mm (1.24 in)	260-290 N·m	191-213 lb ft
Lubricating Type	Forced Feed
Oil Filter Type	Cartridge (Full Flow)
Oil Pan Capacity Including Oil Filter	3.75 liter	4 quarts
Oil Pump
Gap Between Oil Pump Body and Out Rotor	0.4-0.484 mm	0.0157-0.0191 in
Out Rotor Side Clearance	0.045-0.1 mm	0.0018-0.0039 in
Inner Rotor Side Clearance	0.035-0.085 mm	0.0014-0.0033 in
Relief Valve Spring Free Length	81 mm	3.2 in
Oil Pump Type	Rotary (Trochoid)

Valve Guide Reaming Table

Size	Reamer	Production Code	Service Code
Normal	--	--	K
0.075	KM-253	1	K1
0.150	KM-254	2	K2
0.250	KM-255	--	A