Engine Mechanical Specifications

ENGINE MECHANICAL SPECIFICATIONS

Application		Specification
Application		Metric	English
General Data
	Engine Type	V6
	RPO Code	L35/LU3
	VIN Code	W/X
	Displacement	4.3 L	262 CID
	Bore	101.60 mm	4.012 in
	Stroke	88.39 mm	3.480 in
	Compression Ratio	9.2:1
	Firing Order	1-6-5-4-3-2
	Spark Plug Gap	1.52 mm	0.060 in
		42 kPa at 1,000 RPM	6 psig at 1,000 RPM
	Oil Pressure - Minimum - at Normal Operating Temperature	125 kPa at 2,000 RPM	18 psig at 2,000 RPM
		166 kPa at 4,000 RPM	24 psig at 4,000 RPM
Balance Shaft
	Rear Bearing Journal Clearance	0.050-0.088 mm	0.0020-0.0035 in
	Rear Bearing Journal Diameter	38.085-38.100 mm	1.4994-1.500 in
Camshaft
	End Play	0.0254-0.2286 mm	0.0010-0.0090 in
	Journal Diameter	47.440-47.490 mm	1.8677-1.8696 in
	Journal Diameter Out-of-Round	0.025 mm - Maximum	0.0010 in - Maximum
	Lobe Lift - Exhaust	7.20-7.30 mm	0.283-0.287 in
	Lobe Lift - Intake	6.97-7.07 mm	0.274-0.278 in
	Runout	0.065 mm	0.0026 in
Connecting Rod
	Connecting Rod Bearing Clearance - Production	0.038-0.078 mm	0.0015-0.0031 in
	Connecting Rod Bearing Clearance - Service	0.025-0.063 mm	0.0010-0.0025 in
	Connecting Rod Journal Diameter	57.116-57.148 mm	2.2487-2.2497 in
	Connecting Rod Journal Out-of-Round - Production	0.007 mm - Maximum	0.0002 in - Maximum
	Connecting Rod Journal Out-of-Round - Service	0.025 mm - Maximum	0.0010 in - Maximum
	Connecting Rod Journal Taper - Production	0.00508 mm - Maximum	0.00030 in - Maximum
	Connecting Rod Journal Taper - Service	0.025 mm - Maximum	0.0010 in - Maximum
	Connecting Rod Side Clearance	0.15-0.44 mm	0.006-0.017 in
Crankshaft
	Crankshaft Bearing Clearance - Journal #1-Production	0.02-0.508 mm	0.0008-0.0020 in
	Crankshaft Bearing Clearance - Journal #2, #3, and #4-Production	0.028-0.058 mm	0.0011-0.0023 in
	Crankshaft Bearing Clearance - Journal #1-Service	0.0254-0.05 mm	0.0010-0.0020 in
	Crankshaft Bearing Clearance - Journal #2, #3, and #4-Service	0.025-0.063 mm	0.0010-0.0250 in
	Crankshaft End Play	0.050-0.20 mm	0.002-0.008 in
	Crankshaft Journal Diameter - Journal #1	62.199-62.217 mm	2.4488-2.4495 in
	Crankshaft Journal Diameter - Journal #2 and #3	62.191-62.215 mm	2.4485-2.4494 in
	Crankshaft Journal Diameter - Journal #4	62.179-62.203 mm	2.4480-2.4489 in
	Crankshaft Journal Out-of-Round - Production	0.005 mm - Maximum	0.0002 in - Maximum
	Crankshaft Journal Out-of-Round - Service	0.025 mm - Maximum	0.0010 in - Maximum
	Crankshaft Journal Taper - Production	0.007 mm - Maximum	0.0003 in - Maximum
	Crankshaft Runout	0.025 mm - Maximum	0.0010 in - Maximum
Cylinder Bore
	Diameter	101.618-101.643 mm	4.0007-4.0017 in
	Out-of-Round - Production	0.0127 mm - Maximum	0.00050 in - Maximum
	Out-of-Round - Service	0.05 mm - Maximum	0.002 in - Maximum
	Taper - Production Relief Side	0.025 mm - Maximum	0.0010 in - Maximum
	Taper - Production Thrust Side	0.012 mm - Maximum	0.0005 in - Maximum
	Taper - Service	0.025 mm - Maximum	0.0010 in - Maximum
Cylinder Head
	Surface Flatness	0.10 mm - Maximum	0.004 in - Maximum
Exhaust Manifold
	Surface Flatness - Flange to Flange	0.25 mm - Maximum	0.010 in - Maximum
	Surface Flatness - Individual Flange	0.05 mm - Maximum	0.002 in - Maximum
Intake Manifold
	Surface Flatness	0.10 mm - Maximum	0.004 in - Maximum
Oil Pan
	Oil Pan Alignment at Rear of Engine Block	0.3 mm - Maximum	0.011 in - Maximum
Piston
	Piston Bore Clearance - Production	0.018-0.061 mm	0.0007-0.0024 in
	Piston Bore Clearance - Service	0.075 mm - Maximum	0.0029 in - Maximum
Piston Pin
	Clearance in Piston - Production	0.013-0.023 mm	0.0005-0.0009 in
	Clearance in Piston - Service	0.025 mm - Maximum	0.0010 in - Maximum
	Diameter	23.545-23.548 mm	0.9270-0.9271 in
	Fit in Connecting Rod	0.012-0.048 mm - Interference	0.0005-0.0019 in - Interference
Piston Rings - End Gap Measured in Cylinder Bore
	Piston Compression Ring Gap - Production-Top Groove	0.25-0.40 mm	0.010-0.016 in
	Piston Compression Ring Gap - Production-2nd Groove	0.38-0.58 mm	0.015-0.023 in
	Piston Compression Ring Gap - Service-Top Groove	0.25-0.50 mm	0.010-0.020 in
	Piston Compression Ring Gap - Service-2nd Groove	0.38-0.80 mm	0.015-0.031 in
	Piston Compression Ring Groove Clearance - Production-Top Groove	0.030-0.070 mm	0.0012-0.0027 in
	Piston Compression Ring Groove Clearance - Production-2nd Groove	0.040-0.080 mm	0.0015-0.0031 in
	Piston Compression Ring Groove Clearance - Service	0.030-0.085 mm	0.0012-0.0033 in
	Piston Oil Ring Gap - Production	0.25-0.76 mm	0.010-0.029 in
	Piston Oil Ring Gap - Service	0.005-0.090 mm	0.0002-0.0035 in
	Piston Oil Ring Groove Clearance - Production	0.046-0.196 mm	0.0018-0.0077 in
	Piston Oil Ring Groove Clearance - Service	0.046-0.200 mm	0.0018-0.0079 in
Valve System
	Valve Face Angle	45 degrees
	Valve Head Edge Margin	0.79 mm - Minimum	0.031 in - Minimum
	Valve Lash	Net Lash-No Adjustment
	Valve Lift - Exhaust	10.879 mm	0.4280 in
	Valve Lift - Intake	10.527 mm	0.4140 in
	Valve Lifter	Hydraulic Roller Type
	Valve Rocker Arm	Roller Pivot Type
	Valve Rocker Arm Ratio	1.5:1
	Valve Seat Angle	46 degrees
	Valve Seat Runout	0.05 mm - Maximum	0.002 in - Maximum
	Valve Seat Width - Exhaust	1.651-2.489 mm	0.065-0.098 in
	Valve Seat Width - Intake	1.016-1.651 mm	0.040-0.065 in
	Valve Spring Free Length	51.3 mm	2.02 in
	Valve Spring Installed Height - Exhaust	42.92-43.43 mm	1.670-1.700 in
	Valve Spring Installed Height - Intake	42.92-43.43 mm	1.670-1.700 in
	Valve Spring Pressure - Closed	338-374 N at 43.2 mm	76-84 lb at 1.70 in
	Valve Spring Pressure - Open	832-903 N at 32.3 mm	187-203 lb at 1.27 in
	Valve Stem Clearance - Exhaust-Production	0.025-0.069 mm	0.0010-0.0027 in
	Valve Stem Clearance - Exhaust-Service	0.025-0.094 mm	0.0010-0.0037 in
	Valve Stem Clearance - Intake-Production	0.025-0.069 mm	0.0010-0.0027 in
	Valve Stem Clearance - Intake-Service	0.025-0.094 mm	0.0010-0.0037 in
	Valve Stem Oil Seal Installed Height - Measured from the Top of the Large Diameter Valve Guide Bevel to the Bottom of the Valve Stem Oil Seal	1-2 mm	0.03937-0.07874 in