Valve Seals

(Difference between revisions)

Revision as of 07:30, 10 January 2012

Valve stem seals. Datsun 1200 originally use an umbrella type fitted to the intake valves only. Later A-series engines moved to a Lip-seal type that fits over the valve guide (positive seal) and were fitted to all valves.

Overview

B110 used umbrella seals on intake valves only. B210 used positive seals on all eight valves.

Aftermarket seals come in various types, as this MGB graphic shows:

Part Numbers

A-series valve seals (positive seal type) are the same as the Nissan SD25 engine.

Aftermarket

• Fel-Pro SS27283
• Beck/Arnley 0221446
• Sealed Power MV1796 (Umbrella type)
  • Upper Inside Diameter: 0.315
  • Overall Length: 0.718
  • Inside Length: 0.625
  • Seal Outside Diameter: 0.89
  • Type: SS

B110

• 13207-18000 SEAL-OIL VALVE (INTAKE ONLY) 8 A12 -672 2 $1.11
• 13207-H2301 SEAL-LIP VALVE OIL (INTAKE ONLY,KEEPER) 4 OP A12
• 13207-H2310 SEAL-LIP,VALVE,OIL (INTAKE ONLY,NOK) 4 OP A12 - $4.62

B310

• 13207-H7200 SEAL-OIL VALVE (8)
• 13207-H7210 SEAL-OIL VALVE (8)

L-series

L20B

• 13207-21002 SEAL-OIL,VALVE
  • Upper Inside Diameter: 0.27
  • Overall Length: 0.56
  • Inside Length: 0.35
  • Seal Outside Diameter: 0.64
  • Type: TP

The lip-seal type is different for A-series and L-series. This is the type that fits over the valve guide. It is the "normal" type for L20B, is the same as Chevy 4, Isuzu, KA, VG and L-series.