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Engine Mechanical – V6 Page 6A1–289
Piston Ring Groove Width - Oil Control Ring ...............................................2.510 – 2.530 mm Piston to Bore Clearance.............................................................................0.026 – 0.052 mm P i s t o n P i n Piston Pin Diameter ..................................................................................23.997 - 24.000 mm Piston Pin Length.....................................................................................60.600 – 61.100 mm Piston Pin Clearance to Connecting Rod Bore .............................................0.007 – 0.024mm Piston Pin Clearance to Piston Pin Bore.......................................................0.004 – 0.012mm P i s t o n R i n g s Piston Ring to Groove Clearance: First (Top) Compression Ring...............................................................0.030 – 0.065 mm • Second Compression Ring ...................................................................0.015 – 0.060 mm • Oil Control Ring ....................................................................................0.030 – 0.170 mm Piston Ring End Gap: First (Top) Compression Ring...............................................................0.150 – 0.300 mm • Second Compression Ring ...................................................................0.280 – 0.480 mm • Oil Control Ring ....................................................................................0.150 – 0.600 mm C y l i n d e r H e a d Combustion Chamber Volume.................................................................................. 53.600 cc Valve Guide Bore Diameter – Intake ...........................................................6.000 – 6.020 mm Valve Guide Bore Diameter – Exhaust ........................................................6.000 – 6.020 mm Valve Guide Installed Height....................................................................14.050 – 14.550 mm Stationary Hydraulic Lash Adjuster (SHLA) Bore Diameter .....................12.008 – 12.030 mm Valve Seat Angle – Seating Surface................................................................................... 45 ° Valve Seat Angle – Relief Surface...................................................................................... 30 ° Valve Seat Angle – Undercut Surface ................................................................................ 60 ° Valve Seat Runout – Maximum ................................................................................0.050 mm Valve Seat Width – Exhaust Seating Surface..............................................1.400 – 1.800 mm Valve Seat Width – Exhaust Relief Surface.................................................0.700 – 0.900 mm Valve Seat Width – Intake Seating Surface .................................................1.000 – 1.400 mm Valve Seat Width – Intake Relief Surface ....................................................0.500 – 0.700 mm Engine Block Deck Surface Flatness..........................................................................0.05 mm Exhaust Manifold Deck Surface Flatness ...................................................................0.25 mm Intake Manifold Deck Surface Flatness ......................................................................0.05 mm V a l v e S y s t e m Face Angle..................................................................................................................... 44.25 ° Face Runout .............................................................................................................0.038 mm Valve Face Width – Exhaust.....................................................................................2.750 mm Valve Face Width – Intake ........................................................................................2.180 mm Valve Head Diameter – Exhaust..............................................................30.470 – 30.730 mm Valve Head Diameter – Intake .................................................................36.830 – 37.090 mm Valve Installed Height ..................................................................................35.26 – 36.69 mm Valve Length – Exhaust..........................................................................................97.110 mm Valve Length – Intake ...........................................................................................101.230 mm Valve Stem Diameter (standard)..................................................................5.955 – 5.975 mm Valve Stem Diameter (oversize) ..................................................................6.013 – 6.033 mm Valve Stem to Guide Clearance...................................................................0.025 – 0.065 mm Hydraulic Lash Adjuster Diameter ...........................................................11.986 – 12.000 mm Hydraulic Lash Adjuster to Bore Clearance .................................................0.037 – 0.041 mm Rocker Arm/Camshaft Follower Ratio.............................................................................1.68:1 Rocker Arm/Camshaft Follower Roller Diameter .....................................17.740 – 17.800 mm Valve Spring Free Length ........................................................................42.500 – 45.500 mm |