Valve Seats: Replacement
- To replace valve seats, cut inner face of valve seat to weaken wall. Remove valve seat. Machine cylinder head to proper dimension. See OVERSIZE VALVE SEAT SPECIFICATIONS table.
- Heat cylinder head to 480°F (250°C) and press replacement seat in cylinder head. Valve seat height should be within specification. Cut valve seat to proper angle and obtain correct seat width.
OVERSIZE VALVE SEAT SPECIFICATIONS
| Size Mark | Seat Size: In. (mm) | Cyl. Head Bore: In. (mm) | Seat Height: In. (mm) | ||
|---|---|---|---|---|---|
| 1.8L | |||||
| Intake Valve | |||||
| 30 | .012 (.30) | N/A | .276-.283 (7.0-7.2) | ||
| 60 | .024 (.60) | N/A | .287-.295 (7.3-7.5) | ||
| Exhaust Valve | |||||
| 30 | .012 (.30) | N/A | .291-.299 (7.4-7.6) | ||
| 60 | .024 (.60) | N/A | .303-.311 (7.7-7.9) | ||
| 2.0L | |||||
| Intake Valve | |||||
| 30 | .012 (.30) | 1.744-1.745 (44.30-44.33) | .311-.319 (7.90-8.10) | ||
| 60 | .024 (.60) | 1.756-1.757 (44.60-44.63) | .323-.331 (8.20-8.40) | ||
| Exhaust Valve | |||||
| 30 | .012 (.30) | 1.508-1.509 (38.30-38.33) | .311-.319 (7.90-8.10) | ||
| 60 | .024 (.60) | 1.520-1.521 (38.60-38.63) | .323-.331 (8.20-8.40) | ||