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Application
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Specification
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Metric
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English
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General
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V-6
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3.0 Liter
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183 cu in
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LF1
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G-cars/Y-trucks
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89 mm
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3.5039 in
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80.3 mm
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3.1614 in
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11.7:1
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1-2-3-4-5-6
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1.1 mm
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0.0433 in
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Block
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•
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Crankshaft Main Bearing Bore Diameter
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72.867-72.881 mm
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2.8688-2.8693 in
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88.992-89.008 mm
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3.5036-3.5042 in
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•
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Cylinder Bore Out-of-Round - Production Max.
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0.026 mm
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0.001 in
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0.020 mm
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0.0008 in
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Camshaft
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•
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Camshaft Bearing Inside Diameter - Front Number 1
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35.000-35.020 mm
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1.3779-1.3787 in
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•
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Camshaft Bearing Inside Diameter - Middle and Rear Number 2-4
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27.000-27.020 mm
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1.0630-1.0638 in
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0.045-0.215 mm
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0.0018-0.0085 in
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•
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Camshaft Journal Diameter - Front Number 1
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34.936-34.960 mm
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1.3754-1.3764 in
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•
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Camshaft Journal Diameter - Middle and Rear Number 2-4
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26.936-26.960 mm
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1.0605-1.0614 in
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•
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Camshaft Journal Out-of-Round
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0.006 mm
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0.0002 in
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•
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Camshaft Journal to Bore Clearance
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0.040-0.084 mm
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0.0016-0.0033 in
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•
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Camshaft Lobe Lift - Exhaust
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42.456-42.756 mm
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1.6715-1.6833 in
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•
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Camshaft Lobe Lift - Intake
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42.385-42.685 mm
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1.6687-1.6805 in
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•
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Camshaft Runout - Front and Rear Number 1 and 4
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0.025 mm
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0.0010 in
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•
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Camshaft Runout - Middle 2 and 3
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0.050 mm
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0.0020 in
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10.8 mm
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0.4252 in
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10.8 mm
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0.4252 in
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Connecting Rod
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•
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Connecting Rod Bearing Clearance
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0.010-0.070 mm
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0.0004-0.0028 in
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•
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Connecting Rod Bore Diameter - Bearing End
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59.620-59.636 mm
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2.3472-2.3479 in
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•
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Connecting Rod Bore Diameter - Pin End - Production
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24.009-24.019 mm
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0.9452-0.9456 in
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•
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Connecting Rod Bore Diameter - Pin End - Service Maximum
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24.007 mm
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0.9457 in
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•
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Connecting Rod Length - Center to Center
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156.05 mm
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6.1437 in
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•
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Connecting Rod Side Clearance
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0.095-0.355 mm
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0.0037-0.0140 in
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•
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Connecting Rod Width - Bearing End
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21.775 mm
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0.8573 in
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21.725-21.825 mm
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0.8553-0.8593 in
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•
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Connecting Rod Width - Pin End
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21.775 mm
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0.8573 in
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21.725-21.825 mm
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0.8553-0.8593 in
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Crankshaft
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•
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Connecting Rod Journal Diameter
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55.992-56.008 mm
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2.2044-2.2050 in
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•
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Connecting Rod Journal Out-of-Round
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0.005 mm
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0.0002 in
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•
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Connecting Rod Journal Taper
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0.005 mm
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0.0002 in
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•
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Connecting Rod Journal Width
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22.000 mm
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0.8661 in
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21.920-22.080 mm
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0.8630-0.8693 in
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0.100-0.330 mm
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0.0039-0.0130 in
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•
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Crankshaft Main Bearing Clearance
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0.010-0.060 mm
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0.0004-0.0024 in
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•
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Crankshaft Main Journal Diameter
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68.000 mm
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2.6772 in
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•
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Crankshaft Main Journal Out-of-Round
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0.005 mm
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0.0002 in
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•
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Crankshaft Main Journal Taper
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0.005 mm
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0.0002 in
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•
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Crankshaft Main Journal Thrust Wall
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0.000-0.040 mm
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0.0000-0.0016 in
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0.000-0.010 mm
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0.0000-0.0004 in
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•
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Crankshaft Main Journal Width, #2, 4
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24.000 mm
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0.9449 in
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23.900-24.100 mm
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0.9409-0.9488 in
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•
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Crankshaft Main Journal Width, #3
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24.400 mm
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0.9606 in
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24.360-24.440 mm
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0.9591-0.9622 in
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•
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Crankshaft Pilot Bearing Bore Diameter
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20.965-20.995 mm
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0.8254-0.8266 in
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•
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Crankshaft Rear Flange Runout
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0.025 mm
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0.0010 in
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•
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Crankshaft Reluctor Ring Runout - Maximum
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2.000 mm
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0.0787 in
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0.030 mm
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0.0012 in
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•
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Crankshaft Thrust Bearing Clearance
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0.076-0.305 mm
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0.0030-0.0120 in
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•
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Crankshaft Thrust Surface - Height Diameter
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95.000 mm
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3.7401 in
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•
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Crankshaft Thrust Surface Runout
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0.040 mm
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0.0016 in
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Cylinder Head
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•
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Valve Guide Bore - Exhaust
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6.000-6.020 mm
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0.2362-0.2370 in
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Valve Guide Bore - Intake
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6.000-6.020 mm
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0.2362-0.2370 in
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Valve Guide Installed Height
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14.050-14.550 mm
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0.5531-0.5728 in
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•
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Valve Lifter Bore Diameter
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12.008-12.030 mm
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0.4728-0.4736 in
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Lubrication System
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•
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Oil Capacity - With or Without Oil Filter Change
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5.7 Liters
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6 Quarts
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•
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Oil Pressure - Minimum @ Idle
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69 kPa
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10 psi
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•
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Oil Pressure - Minimum @ 2,000 RPM
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138 kPa
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20 psi
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•
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Piston Cooling Jet Valve Opening Pressure
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1.7-2.3 bar
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25-33 psi
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Piston Rings
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•
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First Compression Ring - Nominal
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0.150-0.300 mm
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0.0059-0.0118 in
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First Compression Ring - Maximum, Ring in Bore
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0.350 mm
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0.1378 in
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•
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Second Compression Ring - Nominal
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0.280-0.480 mm
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0.0110-0.0189 in
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•
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Second Compression Ring - Maximum, Ring in Bore
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0.450 mm
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0.0177 in
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0.150-0.600 mm
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0.0059-0.0236 in
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•
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Piston Ring to Groove Clearance
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0.030-0.065 mm
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0.0012-0.0026 in
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•
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Second Compression Ring
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0.015-0.060 mm
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0.0006-0.0024 in
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0.030-0.170 mm
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0.0012-0.0669 in
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1.175-1.190 mm
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0.0463-0.0469 in
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•
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Second Compression Ring
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1.470-1.495 mm
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0.0579-0.0589 in
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2.360-2.480 mm
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0.0929-0.0976 in
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Pistons and Pins
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Piston Diameter - Measured Over Skirt Coating
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88.476-89.014 mm
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3.4833-3.5045 in
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•
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Piston Diameter - Service Limit Minimum, w/more than 10k miles
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88.926 mm
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3.5010 in
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•
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Piston Pin Bore Diameter
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24.007-24.012 mm
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0.9452-0.9454 in
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Piston Ring Groove Width - First Compression Ring
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1.220-1.240 mm
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0.0480-0.0488 in
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Piston Ring Groove Width - Second Compression Ring
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1.510-1.530 mm
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0.0595-0.0602 in
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Piston Ring Groove Width - Oil Control Ring
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2.510-2.530 mm
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0.0988-0.0996 in
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Piston to Bore Clearance - Production; Measured at Skirt Coating
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0.022-0.032 mm
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0.0008-0.0013 in
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Piston to Bore Clearance - Service Limit Maximum, w/more than 10k miles
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0.650 mm
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0.0256 in
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Piston Pin Clearance to Connecting Rod Bore - Production
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0.007-0.024 mm
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0.0003-0.0010 in
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•
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Piston Pin Clearance to Connecting Rod Bore - Service Maximum
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0.030 mm
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0.0012 in
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•
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Piston Pin Clearance to Piston Pin Bore - Production
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0.007-0.015 mm
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0.0003-0.0006 in
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•
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Piston Pin Clearance to Piston Pin Bore - Service Maximum
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0.015 mm
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0.0006 in
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23.997-24.000 mm
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0.9448-0.9449 in
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60.60-61.10 mm
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2.3858-2.4055 in
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Valve System
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44.25 degrees
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0.038 mm
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0.0015 in
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•
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Valve Face Width - Exhaust
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2.750 mm
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0.1083 in
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•
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Valve Face Width - Intake
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2.180 mm
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0.0858 in
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Valve Head Diameter - Exhaust
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30.470-30.730 mm
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1.1996-1.2098 in
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•
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Valve Head Diameter - Intake
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35.03-35.29 mm
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1.3791-1.3894 in
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35.23-36.69 mm
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1.3870-1.4445 in
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97.11 mm
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3.8232 in
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101.23 mm
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3.9854 in
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•
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Valve Seat Angle - Seating Surface
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45 degrees
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Valve Seat Angle - Relief Surface
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30 degrees
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•
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Valve Seat Angle - Undercut Surface
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60 degrees
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Valve Seat Roundness- Maximum
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0.025 mm
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0.0010 in
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Valve Seat Runout - Maximum
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0.080 mm
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0.0032 in
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•
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Valve Seat Width - Exhaust Seating Surface
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1.400-1.800 mm
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0.0551-0.0709 in
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Valve Seat Width - Exhaust Relief Surface
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0.700-0.900 mm
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0.0276-0.0354 in
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Valve Seat Width - Intake Seating Surface
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1.000-1.400 mm
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0.0394-0.0551 in
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Valve Seat Width - Intake Relief Surface
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0.500-0.700 mm
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0.0197-0.0276 in
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•
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Valve Stem Diameter - Exhaust
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5.945-5.965 mm
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0.2341-0.2348 in
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•
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Valve Stem Diameter - Intake
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5.955-5.975 mm
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0.2344-0.2352 in
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•
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Valve Stem-to-Guide Clearance - Exhaust
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0.035-0.075 mm
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0.0014-0.0030 in
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•
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Valve Stem-to-Guide Clearance - Intake
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0.025-0.065 mm
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0.0010-0.0026 in
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•
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Valve Lifters - Stationary Hydraulic Lifter Assembly (SHLA)
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•
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Valve Lifter (SHLA) Diameter
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11.989-12.000 mm
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0.4720-0.4724 in
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•
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Valve Lifter (SHLA)-to-Bore Clearance
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0.037-0.041 mm
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0.0015-0.0016 in
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1.68 to 1
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•
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Valve Rocker Arm Roller Diameter
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17.740-17.800 mm
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0.6987-0.7008 in
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•
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Valve Spring Coil Thickness
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3.250 x 3.900 mm
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0.1280 x 0.1535 in
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•
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Valve Spring Diameter - Inside Top
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12.090-12.590 mm
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0.4760-0.4957 in
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•
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Valve Spring Diameter - Outside Top
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20.140 mm
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0.7929 in
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•
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Valve Spring Diameter - Inside Bottom
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17.950-18.450 mm
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0.7067-0.7264 in
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•
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Valve Spring Diameter - Outside Bottom
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26.000 mm
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1.0236 in
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•
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Valve Spring Free Length
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42.050-44.850 mm
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1.6555-1.7657 in
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•
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Valve Spring Installed Height - Closed
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35.000 mm
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1.3779 in
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•
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Valve Spring Installed Height - Open
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24.000 mm
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0.9449 in
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•
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Valve Spring Load - Closed
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247-273 N
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56-61 lb
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•
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Valve Spring Load - Open
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598-662 N
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134-149 lb
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