Valve Seat Replacement
- To replace valve seats, cut valve seat to designated dimension. See Fig 1. Machine cylinder head to proper dimension. See OVERSIZED VALVE SEAT SPECIFICATIONS table.
- Heat cylinder head to 480°F (250°C) and press replacement seat into cylinder head. Valve seat height should be within specification. Cut valve seat to proper angle and obtain correct seat width.
OVERSIZED VALVE SEAT SPECIFICATIONS
| Size Mark | Seat Size In. (mm) | Cyl. Head Bore In. (mm) | Seat Height In. (mm) | ||
|---|---|---|---|---|---|
| 1.5L | |||||
| Intake | |||||
| 30 | .012 (.30) | 1.429-1.430 (36.30-36.32) | .276-.283 (7.01-7.19) | ||
| 60 | .024 (.61) | 1.441-1.442 (36.60-36.63) | .287-.295 (7.29-7.49) | ||
| Exhaust | |||||
| 30 | .012 (.30) | 1.272-1.273 (32.38-32.33) | .291-.299 (7.39-7.59) | ||
| 60 | .024 (.61) | 1.284-1.285 (32.61-32.64) | .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 (.61) | 1.402-1.403 (35.61-35.64) | .323-.331 (8.20-8.41) | ||
| Exhaust | |||||
| 30 | .012 (.30) | 1.311-1.312 (32.30-33.32) | .311-.319 (7.90-8.10) | ||
| 60 | .024 (.61) | 1.323-1.324 (33.60-33.63) | .323-.331 (8.20-8.41) | ||