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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 1278 (Cylinder Head, VALVETRAIN [CGRA]) >> 15 Cylinder Head, VALVETRAIN >> Intake And Exhaust Valves >> Valve Seats, Reworking >> Reworking Intake Valve Seat

Reworking Intake Valve Seat

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Fig 1: Identifying Angles And Dimensions To Rework Exhaust Valve Seat
GWWN15-0357Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
a = 32.8 mm diameter
b = maximum permissible refacing dimension (1)
c = 0.9 to 1.5 mm
d = maximum diameter: 38.0 mm
r2 = Radius 2.0 mm
Z = Cylinder head lower edge
α = 45° valve seat angle
β = 30° upper correction angle
γ = 60° lower correction angle
(1) How to calculate maximum permissible refacing dimension VALVE SEATS, REWORKING .