Bonneville V8-4.6L VIN Y (2004)
Valve Clearance: Specifications
GENERAL SPECIFICATIONS
Valve Face Angle .................................................................................................................................................................................................. 45 degrees
Valve Face Runout .......................................................................................................................................................................... 0.038 mm (0.0015 inch)
Valve Face Width
Exhaust ............................................................................................................................................................................................ 1.500 mm (0.0591 inch)
Intake ............................................................................................................................................................................................... 1.000 mm (0.0394 inch)
Valve Head Diameter
Exhaust .................................................................................................................................................................. 27.880-28.140 mm (1.0976-1.1079 inch)
Intake ..................................................................................................................................................................... 36.090-36.350 mm (1.4209-1.4311 inch)
Valve Length
Exhaust .................................................................................................................................................................. 91.730-91.990 mm (3.6114-3.6217 inch)
Intake ................................................................................................................................................................. 110.600-110.860 mm (4.3543-4.3646 inch)
Valve Seat Angle ............................................................................................................................................................................................. 45.75 degrees
Valve Seat Relief Angle ........................................................................................................................................................................................ 20 degrees
Valve Seat Relief Width
Exhaust ...................................................................................................................................................................... 0.160-0.360 mm (0.0063-0.0142 inch)
Intake ......................................................................................................................................................................... 0.110-0.310 mm (0.0043-0.0118 inch)
Valve Seat Runout ........................................................................................................................................................................... 0.050 mm (0.0020 inch)
Valve Seat Undercut Angle
Exhaust .................................................................................................................................................................................................................. 65 degrees
Intake .................................................................................................................................................................................................................... 60 degrees
Valve Seat Width
Exhaust ...................................................................................................................................................................... 1.300-1.700 mm (0.0512-0.0669 inch)
Intake ........................................................................................................................................................................ 0.420-0.820 mm (0.0 165-0.0323 inch)
Valve Stem Diameter ................................................................................................................................................ 5.920-5.940 mm (0.2331-0.2339 inch)
Valve Stem Out-of-Round ............................................................................................................................................................... 0.008 mm (0.0003 inch)
Valve Stem Straightness .................................................................................................................................................................. 0.013 mm (0.0005 inch)
Valve Stem-to-Guide Clearance
