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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (15 Engine - Cylinder Head, Valve Drive 3.0L (Eng Code MDK.KA) -- 992 - 911 CARRERA (992)) >> WM, 157019 Removing And Installing Cylinder Heads >> Installing Cylinder Head >> Installing Cylinder Head (Cylinders 1 -3)

Installing Cylinder Head (Cylinders 1 -3)

WARNING: This page is about a different variant/trim than selected.
  1. Fit new  cylinder-head gasket and check that dowel sleeves are installed correctly.
  2. Install cylinder head.

    Carefully fit cylinder head on the cylinder block.

    Screw in new  cylinder head screws -1 to 8-  by hand.

    Tighten cylinder-head screws in the sequence -1 to 8-  ,

    > Initial tightening 5 Nm (3.5 ftlb.) 

    > Tightening torque 50 Nm (37 ftlb.) 

    > Loosen all screws 0Nm (0 ftlb.) 

    > Initial tightening 4 Nm (3 ftlb.) 

    > Subsequent tightening 12 Nm (9 ftlb.) 

    -1 to 4-  : > Torque angle 65 Grad 

    -5 to 8-  : > Torque angle 60 Grad 

    -1 to 4-  : > Final tightening torque angle 65 Grad 

    -5 to 8-  : > Final tightening torque angle 60 Grad 

    Fig 1: Cylinder Head Screws Tightening Sequence
    G15485731Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Tightening sequence for cylinder head

  3. Screw in and tighten screws on chain housing.

    > Tightening torque 13 Nm (9.5 ftlb.) 

    G15485732Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Chain housing screws

  4. Secure coolant collection unit -1-  .

    Screw in and tighten screws -2-  .

    > Tightening torque 13 Nm (9.5 ftlb.) 

    G15485733Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Coolant collection unit

  5. Secure lines on the cylinder head.

    Clip in clip -3-  .

    Connect and lock electric plug connection -2-  .

    Screw in and tighten screw on line bracket -1-  .

    > Tightening torque 10 Nm (7.5 ftlb.) 

    G15485734Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Lines on cylinder head

  6. Screw in and tighten screw for coolant regulator -1-  .

    > Tightening torque 13 Nm (9.5 ftlb.) 

    G15485735Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Coolant regulator at cylinder head

  7. Fit bearing pin -2-  .

    Replace O-rings

    Screw in and tighten bearing pins -2-  .

    > Tightening torque 10 Nm (1.5 ftlb.) 

    G15485736Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Position of bearing pins

  8. Fit and tighten screw -1-  on the generator -2-  .

    > Tightening torque 15 Nm (11 ftlb.) 

    G15485737Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Screw on generator

  9. Install hydraulic tappets -1 and 2-  .

    Visually inspect hydraulic tappets -1 and 2-  for wear and replace them if necessary.

    Coat hydraulic tappets -1 and 2-  with engine oil.

    Insert bucket tappets and switching tappets in accordance with allocation into the fitting bores in the cylinder head.

    G15485738Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Hydraulic tappets for valve control