Valves

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Datsun 1200 uses traditional 8mm stem diameter poppet valves.

Maintenance

See Valve adjustment

Stem Oil Seal

See main article: Valve Seals

Retainers

Valve Spring Retainer Keeper (Valve lock)

• Stem diameter 0.252
• 7 degree angle
• SEALED POWER Part # VK215
• BECK/ARNLEY Part # 0230045

Interchange

• 1976-1979 Buick Opel/Isuzu 1.8
• 1976-1978 Chevrolet Luv/Isuzu 1.8
• 1981-1995 Isuzu, various models
• 1988-1996 Honda/Isuzu 2.6
• Datsun A-series
• Datsun L-series 4 and 6
• Datsun Z-series

Specifications

• Intake valve head diameter: 35 mm
• Exhaust valve head diameter: 29 mm
• Stem diameter: 8 mm
• Overall length: 103.80 mm
• Seat angle: 45 degrees
• Head style: standard
• Stem end: NG

Part Numbers

• 13201-H1000 VALVE-INTAKE [35mm]
• 13202-18000 VALVE-EXHAUST [29mm]
• 13201-H2300 VALVE-INTAKE A12GX [35mm]
• 13202-H2300 VALVE-EXHAUST A12GX [29mm]

Valve Keepers

July 1972 change

13209-18000 RETAINER-VALVE SPRING (8) <> 13209-H2300 <>  13209-H2301 
13209-H2302 RETAINER-VALVE SPRING (8) A12 0772- [without O-ring grooves]

13210-73400 COLLET-VALVE 1 (16) A12
13210-H1000 COLLET-VALVE 1 (16) A12 0272- <> 13210-U0100

Valve Guides

• 13212-H0112 GUIDE-VALVE INTAKE $8.08
• 13213-H0113 GUIDE-VALVE EXHAUST $8.25

They have a little snap ring to limit the depth inserted in into the head

Others

For other A-series valves (A14, etc) and for competition valves, see: Cylinder_Head_Identification#Valves