Valve Seats
- 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.
OVERSIZED VALVE SEAT SPECIFICATIONS
| Size Mark |
Seat Size |
Cyl. Head Bore |
Seat Height |
| 2.0L DOHC |
| Intake Valve |
| 30 |
.012 (.30) |
1.390 (35.312) |
.311-.319 (7.90-8.10) |
| 60 |
.024 (.60) |
1.402 (35.612) |
.323-.331 (.820-8.40) |
| Exhaust Valve |
| 30 |
.012 (.30) |
1.312 (33.312) |
.315 (8.0) |
| 60 |
.024 (.60) |
1.323 (33.612) |
.327 (8.3) |
| All Others |
| 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) |