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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 29 (15 Engine - Cylinder Head, Valve Drive 3.8L (Eng Code MDK.E) -- 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 0 Nm (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
    G15486648Courtesy 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.) 

    G15486649Courtesy 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.) 

    G15486650Courtesy 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.) 

    G15486651Courtesy 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.) 

    G15486652Courtesy 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 (7.5 ftlb.) 

    G15486653Courtesy 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.) 

    G15486654Courtesy 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 -1-  and switching tappets -2-  in accordance with allocation into the fitting bores in the cylinder head.

    G15486655Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Hydraulic tappets for valve control