Engine Mechanical Specifications. Oldsmobile Alero 2002

For 1990-2009 cars only

Makes 🢒 Oldsmobile 🢒 2002 🢒 Alero 🢒 Engine 🢒 Engine Mechanical - 2.2L (L61) 🢒 Engine Mechanical Specifications

Application	Specification
Application	Metric	English
General Data
Engine Type	Inline 4 Cylinder
Displacement	2.2 Liter (134 CID)
RPO	L61
Oil Pressure @ 1,000 RPM	344.75-551.60 kPa	50-80 psi
Engine Cranking Compression Pressure	1275.58-1551.38 kPa	185-225 psi

Application	Specification
Application	Metric	English
General Data
Engine Type	Inline 4 Cylinder
Displacement	2.2 Liter (134 CID)
VIN Code	F
RPO	L61
Crankshaft Sensor Gap	0.60-1.65 mm	0.0236-0.065 in
Spark Plug Gap	--
Total Engine Balance	No Spec. Check and Record Only
Oil Pressure @ 1000 RPM	344.75-551.60 kPa	50-80 psi
Engine Cranking Compression Pressure	1275.58-1551.38 kPa	185-225 psi
Balance Shafts
Balance Shaft Bearing Carrier Bore in Block I.D.	42.000-42.016 mm	1.6535-1.6542 in
Balance Shaft Bearing Carrier O.D.	41.975-41.995 mm	1.6526-1.6534 in
Balance Shaft Housing to Block Clearance	0.005-0.041 mm	0.0002-0.0016 in
Balance Shaft Bearing I.D. #1	20.050-20.063 mm	0.7894-0.7899 in
Balance Shaft Bearing I.D. #2	36.776-36.825 mm	1.4479-1.4498 in
Balance Shaft Journal O.D. #1	20.000-20.020 mm	0.7874-0.7882 in
Balance Shaft Journal O.D. #2	36.723-36.743 mm	1.4458-1.4466 in
Balance Shaft Bearing Clearance #1	0.030-0.063 mm	0.0012-0.0025 in
Balance Shaft Bearing Clearance #2	0.033-0.102 mm	0.0013-0.0040 in
Balance Shaft End Play	0.100-0.300 mm	0.0020-0.0118 in
Balance Shaft Chain Length	368.622-369.032 mm	14.5127-14.5288 in
Balance of Shafts	4.05 Kg/mm per shaft, +/-6 %
Crankshaft
Main Journal O.D.	55.994-56.008 mm	2.2045-2.2050 in
Main Bearing Clearance	0.031-0.067 mm	0.0012-0.0026 in
Rod Pin O.D.	49.000-49.014 mm	1.9291-1.9297 in
Rear Crankshaft Seal O.D.	89.78-90.00 mm	3.535-3.543 in
Crankshaft Endplay	0.050-0.380 mm	0.0012-0.0150 in
Balance of Crankshaft	10 g/cm max
Balance of Flywheel	10 g/cm max
Balance of Crankshaft Damper	0.09 kg/mm max
Cylinder Block
Cylinder Bore I.D.	85.992-86.008 mm	3.3855-3.3861 in
Cylinder Bore Taper	0.010 mm max.	0.0004 in max.
Cylinder Bore Out of Round	0.010 mm max.	0.0004 in max.
Deck Face Flatness - Transverse	0.030 mm	0.0012 in
Deck Face Flatness - Longitudinal	0.050 mm	0.002 in
Deck Face Flatness - Overall	0.08 mm	0.0031 in
Main Bearing Bore I.D.	64.068-64.082 mm	2.5224-2.5229 in
Main Bearing Shell Thickness	4.030-4.037 mm	0.1587-0.1589 in
Main Bearing I.D.	56.035-56.065 mm	2.2061-2.2073 in
Bedplate to Block Flatness	0.50 in 100 mm 0.10 overall
Balance Shaft Bore in Block Front	42.000-42.016 mm	1.6535-1.6542 in
Balance Shaft Bore in Block Rear	40.763-40.776 mm	1.6048-1.6054 in
Cylinder Head and Valve Train
Cylinder Head Flatness	0.020 in 50 mm, 1 mm over all - Eng Spec
Valve Guide I.D., Intake	6.000-6.012 mm	0.2362-0.2367 in
Valve Guide I.D., Exhaust	6.000-6.012 mm	0.2362-0.2367 in
Valve Stem O.D., Intake	5.955-5.970 mm	0.2344-0.2355 in
Valve Stem O.D., Exhaust	5.935-5.950 mm	0.2337-0.2343 in
Stem to Guide Clearance, Intake	0.030-0.057 mm	0.0012-0.0022 in
Stem to Guide Clearance, Exhaust	0.050-0.077 mm	0.0020-0.0026 in
Valve Spring Load @ 32.5 mm, Closed	245.0-271.0 N. - Eng Spec
Valve Spring Load @ 32.5 mm, Open	525.0-575.0 N. - Eng Spec
Valve Stem Installed Heights	Check and Record
Valve Seat Run-out	0.05 mm max.	0.0020 in max.
Valve Face Run-out	0.04 mm max.	0.0016 in max.
Combustion Chamber Volume	52.7 +/- 2.5 cc
Engine Clearance Volume	65.26 +/- 2.5 cc
Compression Ratio	10:1
Cam Bearing I.D.	27.000-27.021 mm	1.0630-1.0638 in
Cam Journal O.D.	26.935-26.960 mm	1.0604-1.0614 in
Camshaft Bearing Clearance	0.040-0.086 mm	0.0016-0.0034 in
Camshaft Thrust Width-Cylinder Head	20.868-20.920 mm	0.8215-0.8236 in
Camshaft Thrust Width-Camshaft	21.000-21.052 mm	0.8268-0.8252 in
Camshaft Endplay	0.040-0.144 mm	0.0016-0.0057 in
Stationary Lash Adjuster Bore I.D.	12.013-12.037 mm	0.4730-0.4739 in
Stationary Lash Adjuster O.D.	11.986-12.000 mm	0.0005-0.0020 in
Stationary Lash Adjuster Clearance	0.013-0.051 mm	3.2210-3.2299 in
Timing Chain Length	477.367-477.817 mm	18.7940-18.8117 in
Cam Timing, Intake	114-120° ATDC
Cam Timing, Exhaust	111.5-117.5° BTDC
Oil Pump and Components
Gerotor Pocket I.D.	--	--
Outer Element O.D.	41.8 mm	1.65 in
Outer Element Clearance	0.035 mm	0.012 in
Gerotor Pocket Depth	--	--
Outer Element Thickness	14.0 mm	0.5512 in
Inner Element Thickness	13.98 mm	0.5504 in
Pocket Depth Clearance, Outer	--	--
Pocket Depth Clearance, Inner	--	--
Pressure Relief Valve I.D.	--	--
Pressure Relief Valve O.D.	--	--
Pressure Relief Valve Clearance	--	--
Pressure Relief Valve Spring Working Length	56.5 mm	2.2244 in
Pressure Relief Valve Tension - Length	--	--
Pistons and Connecting Rods
Piston Diameter @ 14.5 mm up	85.967-85.982 mm	3.3845-3.3851 in
Piston to Bore Clearance	0.010-0.041 mm	0.0004-0.0016 in
Piston Weight	--	--
Piston Height	Max. -0.9 mm below deck
Piston Pin Bore I.D.	20.002-20.007 mm	0.7875-0.7877 in
Ring Groove Width, Top	1.23-1.25 mm	0.0484-0.0492 in
Ring Groove Width, Second	1.52-1.54 mm	0.0598-0.0606 in
Ring Groove Width, Oil Control	2.52-2.54 mm	0.0992-0.1000 in
Piston Ring Thickness, Top	1.170-1.190 mm	0.0461-0.0469 in
Piston Ring Thickness, Second	1.471-1.490 mm	0.0579-0.0587 in
Piston Ring Thickness, Oil Control Rail	0.43 mm max.	0.0169 in max.
Piston Ring Thickness, Oil Control Spacer	1.574-1.651 mm	0.0620-0.0650 in
Ring to Groove Clearance, Top	0.04-0.08 mm	0.0015-0.0031 in
Ring to Groove Clearance, Second	0.030-0.069 mm	0.0012-0.0027 in
Ring to Groove Clearance, Oil Control	0.090-0.106 mm	0.0035-0.0042 in
Ring Gap, Top	0.20-0.40 mm	0.008-0.016 in
Ring Gap, Second	0.35-0.55 mm	0.014-0.022 in
Ring Gap, Oil Rails	0.25-0.76 mm	0.010-0.030 in
Rod Bearing Bore I.D.	52.118-52.134 mm	2.0519-2.0525 in
Rod Bearing Shell Thickness	1.539-1.545 mm	0.0606-0.608 in
Rod Bearing I.D., 90 degree	49.043-49.073 mm	1.9308-1.9320 in
Rod Bearing I.D., 45 degree	With-in +0.009 / -0.004 of 90 degree spec.
Rod Bearing to Crankpin Clearance	0.029-0.069 mm	0.0011-0.0027 in
Rod Small End I.D.	20.007-20.021 mm	--
Piston Pin O.D.	19.995-20.000 mm	0.7872-0.7874 in
Piston to Pin Clearance	0.002-0.012 mm	0.0001-0.0005 in
Pin to Rod Clearance	0.007-0.026 mm	--
Rod Side Clearance	0.070-0.370 mm	0.0028-0.0146 in
Rod Twist	0.040 max.
Rod Bend	0.021 max.
Rod Large End Micro	2.0 Ra max.
Rod Small End Micro	0.3 Ra max.
Piston Pin Endplay	0.19-1.16 mm	0.007 5-0.0461 in