Cylinder Head: Valves
Measure valve stem diameter and margin. Replace valve if measurements are not within specification. See VALVES & VALVE SPRINGS table under ENGINE SPECIFICATIONS.
OVERSIZED VALVE SEAT SPECIFICATIONS
| Size Mark | Seat Size In. (mm) | Cyl. Head Bore In. (mm) | Seat Height In. (mm) | |||
|---|---|---|---|---|---|---|
| Precis | ||||||
| Intake | ||||||
| 30 | .012 (.30) | 1.429-1.430 (36.30-36.32) | .280 (7.10) | |||
| 60 | .024 (.60) | 1.441-1.442 (36.60-36.63) | .291 (7.40) | |||
| Exhaust | ||||||
| 30 | .012 (.30) | 1.272-1.273 (32.38-32.33) | .295 (7.49) | |||
| 60 | .024 (.60) | 1.283-1.285 (32.59-32.64) | .307 (7.79) | |||
| 1.5L Except Precis | ||||||
| Intake | ||||||
| Primary | ||||||
| 30 | .012 (.30) | 1.079-1.080 (27.42-27.44) | .276-.283 (27.42-27.44) | |||
| 60 | .024 (.60) | 1.091-1.092 (27.72-27.74) | .287-.295 (7.29-7.49) | |||
| Secondary | ||||||
| 30 | .012 (.30) | 1.276-1.277 (32.42-32.44) | .276-.283 (7.01-7.19) | |||
| 60 | .024 (.60) | 1.288-1.289 (32.72-32.74) | .287-.295 (7.29-7.49) | |||
| Exhaust | ||||||
| 30 | .012 (.30) | 1.394-1.395 (35.42-35.44) | .291-.299 (7.39-7.59) | |||
| 60 | .024 (.60) | 1.406-1.407 (35.72-35.74) | .303-.311 (7.70-7.90) | |||
| 1.6L | ||||||
| Intake | ||||||
| 30 | .012 (.30) | 1.390-1.391 (35.31-35.33) | .311-.319 (7.90-8.10) | |||
| 60 | .024 (.60) | 1.402-1.403 (35.60-35.64) | .323-.331 (8.20-8.40) | |||
| Exhaust | ||||||
| 30 | .012 (.30) | 1.311-1.312 (32.30-33.32) | .311-.319 (32.30-33.32) | |||
| 60 | .024 (.60) | 1.323-1.324 (33.60-33.63) | .323-.331 (8.20-8.40) | |||