Engine Valves & Valve Springs Specifications
VALVES & VALVE SPRINGS
| Application | Specification | ||
|---|---|---|---|
| Intake Valves | |||
| Seat Angle | 45° | ||
| Valve Head Thickness | |||
| Standard | .039" (.99 mm) | ||
| Service Limit | .024" (.61 mm) | ||
| Stem Diameter | .2348-.2354" (5.964-5.979 mm) | ||
| Exhaust Valves | |||
| Seat Angle | 45° | ||
| Valve Head Thickness | |||
| Standard | .047" (1.19 mm) | ||
| Service Limit | .028" (.71 mm) | ||
| Stem Diameter | .2339-.2344" (5.941-5.954 mm) | ||
| Valve Springs | |||
| Inner Spring Free Length | |||
| Standard | 1.4204" (36.078 mm) | ||
| Service Limit | 1.3780" (35.001 mm) | ||
| Outer Spring Free Length | |||
| Standard | 1.5921" (40.439 mm) | ||
| Service Limit | 1.5440" (39.218 mm) | ||
| Out-Of-Square | .079" (2.01 mm) | ||
| Lbs. @ In. (kg @ mm) | |||
| Inner Valve Spring Preload | |||
| Standard | 15.2-17.4 @ 1.08 (6.9-7.9 @ 27.4) | ||
| Service Limit | 13.6 @ 1.08 (6.2 @ 27.4) | ||
| Outer Valve Spring Preload | |||
| Standard | 33.9-39.2 @ 1.25 (15.4-17.8 @ 31.8) | ||
| Service Limit | 30.4 @ 1.25 (13.8 @ 31.8) | ||