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Home >> Honda >> 1983 >> Prelude Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.3L 4-CYL, 1.5L 4-CYL, 1.75L 4-CYL & 1.8L 4-CYL >> Engine Specifications >> Valve Specifications

Valve Specifications

VALVE SPECIFICATIONS

Application Specification
1.3L & 1.5L
Intake
Head Diam. In. (mm) 1.366-1.374 (34.70-34.90)
Face Angle 45°
Seat Angle 45°
Seat Width In. (mm) .049-.061 (1.25-1.55)
Stem Diameter In. (mm) .2591-.2594 (6.580-6.590)
Stem Clearance In. (mm) .0008-.0023 (.023-.058)
Valve Lift In. (mm) n/a
Exhaust
Head Diam. In. (mm) 1.098-1.106 (27.90-28.10)
Face Angle 45°
Seat Angle 45°
Seat Width In. (mm) .049-.061 (1.25-1.55)
Stem Diameter In. (mm) .2574-.2578 (6.537-6.547)
Stem Clearance In. (mm) .0025-.0037 (.063-.093)
Valve Lift In. (mm) n/a
Auxiliary
Head Diam. In. (mm) .469-.476 (11.90-12.10)
Face Angle 45°
Seat Angle 45°
Seat Width In. (mm) .014-.019 (.2587-.2593)
Stem Diameter In. (mm) .2587-.2593 (6.572-6.587)
Stem Clearance In. (mm) .0009-.0023 (.023-.058)
Valve Lift In. (mm) n/a
1.7L
Intake
Head Diam. In. (mm) 1.366-1.374 (34.70-34.90)
Face Angle 45°
Seat Angle 45°
Seat Width In. (mm) .049-.061 (1.25-1.55)
Stem Diameter In. (mm) .2748-.2751 (6.98-6.99)
Stem Clearance In. (mm) .001-.002 (.020-.050)
Valve Lift In. (mm) n/a
Exhaust
Head Diam. In. (mm) 1.098-1.106 (27.90-28.10)
Face Angle 45°
Seat Angle 45°
Seat Width In. (mm) .049-.061 (1.25-1.55)
Stem Diameter In. (mm) .2732-.2736 (6.94-6.95)
Stem Clearance In. (mm) .002-.004 (.060-.090)
Valve Lift In. (mm) n/a
Auxiliary
Head Diam. In. (mm) .469-.476 (11.90-12.10)
Face Angle 45°
Seat Angle 45°
Seat Width In. (mm) .014-.019 (.35-.49)
Stem Diameter In. (mm) .2587-.2593 (6.572-6.587)
Stem Clearance In. (mm) .0009-.0023 (.023-.058)
Valve Lift In. (mm) n/a
1.8L
Intake
Head Diam. In. (mm) 1.177-1.185 (29.9-30.1)
Face Angle 45°
Seat Angle 45°
Seat Width In. (mm) .049-.061 (1.25-1.55)
Stem Diameter In. (mm) .2591-.2594 (6.58-6.59)
Stem Clearance In. (mm) .001-.002 (.020-.050)
Valve Lift In. (mm) n/a
Exhaust
Head Diam. In. (mm) 1.098-1.106 (27.90-28.10)
Face Angle 45°
Seat Angle 45°
Seat Width In. (mm) .049-.061 (1.25-1.55)
Stem Diameter In. (mm) .2732-.2736 (6.94-6.95)
Stem Clearance In. (mm) .002-.004 (.060-.090)
Valve Lift In. (mm) n/a
Auxiliary
Head Diam. In. (mm) .469-.476 (11.90-12.10)
Face Angle 45°
Seat Angle 45°
Seat Width In. (mm) .014-.019 (.35-.49)
Stem Diameter In. (mm) .2587-.2593 (6.572-6.587)
Stem Clearance In. (mm) .0009-.0023 (.023-.058)
Valve Lift In. (mm) n/a