LEMON Manuals: Even more car manuals for everyone
Home >> Porsche >> 2016 >> 911 Turbo, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine - 911 CARRERA (996)) >> Reworking cylinder head

Reworking cylinder head

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Porsche 911, 2004 Porsche 911, 2003 Porsche 911, 2002 Porsche 911, and 2001 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean removed cylinder head carefully (parts washing machine, solvent naphtha). Remove residual sealant on the sealing surface, for example, with film eraser (commercially available) or acetone.
  2. Check sealing surface of cylinder head for distortion using a straight-edge.

    Permissible unevenness of the parting plane: 0.05 mm 

  3. Cylinder heads with distorted sealing surface can be repaired by plain-milling them.
    NOTE:
    • The admissible peak-to-valley roughness of the sealing surface is 0.015 mm

    Permissible unevenness of parting surface after machining: 0.03 mm 

    The permissible wear dimension -X- for the height of the cylinder head is: 141.65 mm 

    Fig 1: Identifying Cylinder Head Height Measuring Points
    G03100111Courtesy of PORSCHE OF NORTH AMERICA, INC.
scientia non olet · About LEMON Manuals