Datsun 1200 uses traditional 8mm stem diameter poppet valves.
Nissan Competition Parts
From the 1984 catalog
- 13201-H2300 35MM/1.38" GX INTAKE VALVE
- 13201-H6200 37MM/1.46" INTAKE VALVE
- 99996-H1100 COMPETITION 37MM/1.46" INTAKE VALVE
- Polished and tuliped for improved flow characteristics
- 13202-H2300 29MM/1.14" EXHAUST VALVE A12, A12GX
- 13202-H6200 30MM/1.18" EXHAUST VALVE A14, A15
- 99996-H1110 COMPETITION 30MM/ 1.18" EXHAUST VALVE
- Polished and tuliped for improved flow characteristics