1.2L REVOTRON ENGINE 65 Valve Specification (1.2L NG TC REVOTRON) Dimension (Call out) Intake Valve Exhaust Valve Valve Head Diameter (A). Ø 31.52 ± 0.20 Ø 27.12 ± 0.20 Valve Seat Angle. 450 -15’ 450 -15’ Valve Stem Diameter (B). Ø 5.473/5.487 mm Ø 5.463/5.477 mm Valve Seat Diameter (C). Ø 30.08 mm (Gauge dia.) Ø 25.37 mm (Gauge dia.) Valve Seat End Distance from Valve Face (D). 1.72 ± 0.10 mm 1.873 ± 0.10 mm Maximum Run-out of Valve Face with Respect to Valve Stem. 0.1 mm 0.1 mm Maximum Run-out of Valve Seat with Respect to Valve Stem (C - B). 0.03 mm 0.03 mm
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