Revotron 1.2T 61 Valve Specification (Revotron 1.2T) Dimension (Call out) Intake Valve Exhaust Valve Valve Head Diameter (A). 37.9 / 38.1 mm 31.9 / 32.1 mm Valve Seat Angle. 450 +25' 450 +25' Valve Stem Diameter (B). 6.97-0.015 mm 6.96-0.015 mm Valve Seat Diameter (C). Ø 36.2 mm Ø 30.27 Valve Seat End Distance from Valve Face (D). 2.1 mm 2.065 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). 0.030 mm 0.030 mm Valve Seat Specification (Revotron 1.2T) Dimension Intake Valve Exhaust Valve Valve Seat Diameter 35 ± 0.05 mm 29 ± 0.05 mm Maximum Runout of Valve Seat with Respect to Valve Guide Axis 0.030 mm 0.030 mm Valve Seat Insert Thickness 6.37 ± 0.05 mm 6.64 ± 0.05 mm Valve Seat Insert I.D. 32.7 ± 0.1 mm 32.7 ± 0.1 mm Valve Seat Bore I.D.(in cylinder head) Normal : 38.45/38.48 Normal 1 : 38.95/38.98 Normal : 32.64/32.671 Valve Seat Insert O.D. Normal : 38.50 Normal 1 : 39.00 Normal : 32.70 Normal 1 : 33.20 Valve Seat Insert Bore Angle 160 from vertical alignment with cylinder head mating surface
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