Cylinder Head Assembly: Technical Service Bulletins

• Customer Interest
  • Exhaust Valves/Stem Seals - Seized
• All Technical Service Bulletins
  • Water Outlet Flange Mounting - Changed
  • Cylinder Heads - Tightening Procedure & Service Changes
    • Overview
    • 924 Model
    • 924 Turbo Model
    • 924S, 944, 944S, 944 Turbo Model
    • 911 Carrera Model
    • 928, 928S, 928 S4 Model
  • Cylinder Head - Revised Torque Value and Procedure
  • Cylinder Heads - Machining and Using Correct Gaskets
  • Exhaust Valves/Stem Seals - Seized
  • Head Cover - Additional Sealing Requirements
  • Engine - Machining Valve Seats, Checking Valve Guides