Valve Specifications

Valve Installed Height - All 25.00 mm - 25.50 mm (0.9840"- 1.0040")
Measured From Top of Valve Stem to Top of Camshaft Housing Mounting Surface
Valve Tip Above Spring Retainer All 1.00 mm - 2.00 mm (0.0394" - 0.0787")

INTAKE
Face Angle 44
Seat Angle 45
Head Diameter 36.37 mm - 36.63 mm (1.4318" - 1.4421")
Stem Diameter 6.990 mm - 6.972 mm (0.27512" - 0.27445")
Overall Length 109.984 mm (4.3300")
Stem to Guide Clearance 0.025 mm - 0.069 mm (0.0010" - 0.0027")
Valve Seat Width 0.94 mm - 1.90 mm (0.0370" - 0.0748")
Valve Seat Margin (Min.) 0.25 mm (0.0098")
Valve Face Runout 0.038 mm (0.0015")
Valve Tip to Groove 3.023 mm - 3.473 mm (0.1190" - 0.1367")

EXHAUST
Face Angle 44.5
Seat Angle 45
Head Diameter
(VIN D, 3) 29.88 mm - 30.14 mm (1.1764" - 1.1866")
(VIN A) 31.37 mm - 31.63 mm (1.2350" - 1.2453")
Stem Diameter 6.959 mm - 6.977 mm (0.2740" - 0.2747")
Overall Length 109.482 mm (4.3103")
Stem to Guide Clearance 0.038 mm - 0.081 mm (0.0015" - 0.0032")
Valve Seat Width 0.094 mm - 1.90 mm (0.0037" - 0.0748")
Valve Seat Margin (Min.) 0.25 mm (0.0098")
Valve Face Runout 0.038 mm (0.0015")
Valve Tip to Groove 3.023 mm - 3.473 mm (0.1190" - 0.1367")