Engine Mechanical Specifications. Buick Skylark 1997

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1997 🢒 Skylark 🢒 Engine 🢒 Engine Mechanical - 2.4L 🢒 Engine Mechanical Specifications

Application	Specification
Application	Metric	English
General Data
Engine Type	Inline 4 Cylinder
Displacement	2.4 Liter (146 CID)
Liter (VIN)	T
RPO	LD9
Bore	90 mm	3.54 in
Stroke	94 mm	3.70 in
Compression Ratio	9.5 to 1
Firing Order	1-3-4-2
Lubrication System
Oil Capacity Without Filter Change	3-3/4 Liters	4 qts
When Changing the Oil Filter, Up to an Additional 0.946 Liter or One Quart of Oil May Be Needed. Filter Type or Equivalent	PF-44
Oil Pressure @ 3000 RPM	207 kPa	30 psi min.
Oil Pressure @ 900 RPM	69 kPa	10 psi min.
Cylinder Block
Cylinder Bore Diameter	89.994-90.006 mm	3.5110-3.5435 in
Out Of Round Maximum	0.010 mm	0.0004 in
Taper Maximum. Top to 106 mm (4.173 in) Down	0.008 mm	0.0003 in
Runout Rear Face of Block to the Crankshaft. Center Line Maximum	0.07 mm	0.002 in
Cylinder Head
Cylinder Head Flatness Maximum Material That Can Be Removed	0.076 mm	0.003 in
Do Not Resurface if the Measurement is Less Than	0.076 mm	0.003 in
Resurface	0.076-0.25 mm	0.003-0.010 in
Replace the Head if the Measurement is More Than	0.25 mm	0.010 in
Volume	58.9 cc-60.1 cc	1.5825 oz-1.6501 oz
Runout	0.05 mm	0.00196 in
Valve Seat Diameter Intake	34.066 mm	1.3412 in
Exhaust	27.048 mm	1.1436 in
Intake Valve Guide I.D.	5.921-5.941 mm	0.2331-0.2339 in
Exhaust Valve Guide I.D.	5.908-5.928 mm	0.2326-0.2334 in
Valve Stem to the Valve Guide Clearance Intake	0.024-0.070 mm	0.000986-0.00275 in
Exhaust	0.037-0.082 mm	0.00150-0.00320 in
Piston
Clearance in the Bore	0.010-0.042 mm	0.0006-0.0018 in
Compression Height	29.27-30.03 mm	1.180-1.182 in
Piston Diameter at 70°F (21°C)	89.968-89.984 mm	3.5420-3.5427 in
Piston Pin Bore I.D. at 70°F (21°C)	22.002-22.006 mm	0.8662-0.8664 in
Weight Less Pin and Rings	345 g +/- 6 g	12.075 oz +/- 0.1764 oz
Ring Groove Width, Top Compression	1.23-1.25 mm	0.048-0.049 in
Ring Groove Width, Second Compression	1.52-1.54 mm	0.0598-0.0606 in
Ring Groove Width, Oil	3.01-3.03 mm	0.1185-0.1193 in
Piston Rings
Compression Ring Width, Both	1.170-1.190 mm	0.0461-0.0469 in
Compression Ring Gap, Top	0.15-0.30 mm	0.006-0.012 in
Compression Ring Gap, 2nd Ring	0.30-0.41 mm	0.0119-0.0161 in
Oil Rails	0.025-0.65 mm	0.0098-0.0256 in
Compression Ring Side Clearance in the Groove, Top Ring	0.040-0.080 mm	0.0016-0.0031 in
Second Ring	0.030-0.070 mm	0.0012-0.0028 in
Oil Ring Width	0.497-0.523 mm	0.01957-0.02060 in
Oil Ring Gap	0.399-1.40 mm	0.0157-0.0551 in
Piston Pin
Diameter	21.995-22.000 mm	0.8659-0.8661 in
Pin to Piston Clearance Loose @ 21°C (70°F)	0.002-0.011 mm	0.00007-0.00043 in
Pin to Rod Clearance	0.007-0.032 mm	0.00027-0.0013 in
Weight	109 g	4.0207 oz
End Play on Floating Pin	0.0-0.6 mm	0.00-0.0236 in
Crankshaft and Connecting Rod
Main Bearing Journal Diameter	60.031-60.010 mm	2.3634-2.3626 in
Width, Main Thrust Bearing Journal No. 3, Including Fillets	27.837-27.913 mm	1.0959-1.0989 in
Out of Round Maximum	0.005 mm	0.0002 in
Straightness, Taper	0.007 mm	0.0003 in
Clearance	0.013-0.075 mm	0.0005-0.0030 in
Main Bearing Inside Diameter	60.033-60.071 mm	2.3635-2.3650 in
Crankshaft End Play	0.087-0.243 mm	0.0034-0.0095 in
Rod Bearing Journal Diameter	47.975-48.00 mm	1.8887-1.8897 in
Rod Bearing Inside Diameter	48.013-48.028 mm	1.8903-1.8909 in
Out of Round	0.005 mm	0.0002 in
Straightness, Taper	0.005 mm	0.0002 in
Clearance	0.013-0.053 mm	0.0005-0.0020 in
Rod Side Clearance	0.150-0.450 mm	0.0059-0.0177 in
Width	23.270-23.420 mm	0.9161-0.9220 in
Runout of Crankshaft at the Flywheel Flange Maximum	0.03 mm	0.001 in
Runout of Crankshaft Maximum	0.025 mm	0.00098 in
Supported on Front and Rear Journals Clearance to the Crankshaft Position Sensor	0.77-1.77 mm	0.0303-0.0697 in
Connecting Rod I.D. at the Small End	22.007-22.027 mm	0.8664-0.8672 in
Connecting Rod I.D. at the Large End	51.167-51.193 mm	2.0144-2.0154 in
Connecting Rod Width at the Small End	23.170-23.220 mm	0.9122-0.9142 in
Connecting Rod Width at the Large End	23.170-23.220 mm	0.9122-0.9142 in
Connecting Rod Weight, in the Same Engine, All Within	2 g	0.0705 oz
Connecting Rod Clearance to Piston Pin	0.007-0.031 mm	0.00027-0.0122 in
Rod Assembly Center to Center Distance	142.450-142.550 mm	5.6125-5.6164 in
Flywheel Fit	0.000-0.013 mm loose	0.0000-0.0005 in
Flange Runout Maximum	0.03 mm	0.00120 in
Stroke of Crank	94 mm	3.70 in
A.D. of Seal Diameter on Crank	81.96-82.04 mm	3.2210-3.2299 in
Runout of Seal Surface	0.05 mm max	0.002 in
Balancer Hub I.D. to Crank Snout O.D. Crank	33.00-33.03 mm	1.2992-1.3004 in
I.D. Balancer	33.00-33.03 mm	1.2992-1.3004 in
Timing Gear Fit to Crankshaft Snout	33.03-33.06 mm	1.3004-1.3016 in
Camshaft
Lobe Lift Intake	9.0 mm	0.354 in
Exhaust	8.8 mm	0.346 in
Journal Diameter No. 1	39.93-39.95 mm	1.5720-1.5728 in
Journal Diameter No. 2-5	34.93-34.95 mm	1.3751-1.3760 in
Camshaft Bearing I.D. No. 1	40.00-40.040 mm	1.5748-1.5764 in
Camshaft Bearing I.D. No. 2-5	35.00-35.040 mm	1.3780-1.3795 in
Journal Clearance	0.050-0.110 mm	0.0019-0.0043 in
End Play Clearance	0.025-0.225 mm	0.0009-0.0088 in
Lobe Taper	0.046-0.083 mm	0.0018-0.0033 in
On diameter in	14.0 mm	0.5512 in
Camshaft Housing
Lifter Bore I.D.	33.989-34.019 mm	1.3381-1.3393 in
Lifter O.D.	33.959-33.975 mm	1.3369-1.3375 in
Lifter to Bore Clearance	0.016-0.058 mm	0.0006-0.0023 in
Lip Seal Bore I.D.	49.975-50.025 mm	1.9675-1.9695 in
Lip Seal O.D.	49.975-50.025 mm	1.9675-1.9695 in
Cam Carrier Flatness	0.07 mm	0.0028 in
Bottom Maximum Within 100.0 mm (3.937 in)	0.025 mm	0.001 in
Valve Lifter
Clearance in Bore	0.016-0.058 mm	0.0006-0.0023 in
Valves
Valve Installed Height, All	24.86-25.62 mm	0.9787-1.0024 in
Valve Tip Above Spring Retainer, All	0.602-0.820 mm	0.0237-0.0323 in
Intake Valves, Valve Face Angle	46 degrees
Valve Seat Angle	45 degrees
Head Diameter	35.5 +/- 0.03 mm	1.3987 +/- 0.0011 in
Stem Diameter	5.921-5.941 mm	0.2331-0.2339 in
Overall Length	107.290 mm	4.2272 in
Stem To Guide Clearance	0.025-0.069 mm	0.0009-0.0025 in
Valve Seat Width	0.94-1.90 mm	0.0370-0.0748 in
Valve Seat Margin Minimum	0.25 mm	0.0098 in
Valve Face Runout	0.038 mm	0.0015 in
Valve Tip to the Groove Centerline	3.420 mm	0.1346 in
Exhaust Valves, Valve Face Angle	45.5 degrees
Valve Seat Angle	45 degrees
Head Diameter	28.870-29.130 mm	1.1366-1.1469 in
Stem Diameter	5.908-5.928 mm	0.2326-0.2334 in
Overall Length	108.17 mm	4.2586 in
Stem to Guide Clearance	0.038-0.082 mm	0.0016-0.0032 in
Valve Seat Width	0.094-1.90 mm	0.0037-0.0748 in
Valve Seat Margin Minimum	0.25 mm	0.0098 in
Valve Face Runout	0.038 mm	0.0015 in
Valve Tip to Groove Centerline	3.420 mm	0.1346 in
Valve Springs
Valve Spring Pressure Load @ 36.5 mm (1.4370), Closed	223-247 N	50-55 lb
Load @ 26.98 mm (1.0622 in), Open	544-596 N	122-133 lb
Balance Shafts
Housing Flatness Maximum	0.076 mm	0.0030 in
Bore Roundness	0.025 mm	0.0009 in
Bearing Thickness	1.500-1.508 mm	0.0590-0.0593 in
Bearing I.D.	30.019-30.061 mm	1.1819-1.1835 in
Housing Bore	33.025-33.050 mm	1.3001-1.1801 in
Shaft Journal O.D.	29.950-29.975 mm	1.1791-1.1801 in
Journal Taper (Intentional Towards Counterweight	0.000-0.010 mm	0.000-0.0004 in
Journal Roundness Maximum	0.005 mm	0.0002 in
Bearing Clearance	0.044-0.111 mm	0.0017-0.0044 in
Gear Diameter	61.050-61.145 mm	2.4035-2.4073 in
Gear Backlash	0.008-0.086 mm	0.0003-0.0034 in
Chain Slack, with 6 lb of Pressure Applied to the Guide	1.0 mm	0.040 in
Balance Shaft Chain Guide Wear Maximum Groove Depth.	2.5 mm	0.100 in
Shaft Groove Width	3.23-3.40 mm	0.127-0.134 in
Thrust Plate Thickness	2.945-3.045 mm	0.1159-0.1199 in
Endplay	0.185-0.455 mm	0.0073-0.0179 in
Oil Pump
Gerotor Pocket Depth	17.11-17.16 mm	0.6736-0.6756 in
Diameter	54.033-54.083 mm	2.1273-2.1292 in
Inner Gerotor Tip Clearance Maximum	0.15 mm	0.0059 in
Outer Gerotor Diameter Clearance	0.033-0.133 mm	0.0013-0.0052 in
Outer Gerotor Thickness	17.087-17.099 mm	0.6727-0.6731 in
Oil Pump Drive to the Driven Gear Backlash	0.23-0.51 mm	0.0091-0.0201 in