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Home >> Porsche >> 2016 >> Cayman GTS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 232 (10 - Engine - Crankcase, Suspension -- 92A Cayenne) >> WM 1001IN Tightening Torques, Tightening Sequences, Assembly Overviews For Engine (Cayenne S, Cayenne Turbo, Cayenne GTS, Cayenne Turbo S) >> Technical Values >> Group 15, Cylinder Head, Valve Drive

Group 15, Cylinder Head, Valve Drive

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Information 

  1. Intake valve
  2. Valve-seat ring (intake)
  3. Valve guide
  4. Lower valve-spring plate (intake)
  5. Valve stem seal
  6. Set of valve springs (intake)
  7. Upper valve-spring plate (intake)
  8. Valve collet
  9. Upper valve-spring plate (outlet)
  10. Valve spring (one outlet valve spring)
  11. Lower valve-spring plate (outlet)
  12. Outlet valve
  13. Valve-seat ring (outlet)
    14. Fig 1: Identifying Cylinder Head Valves - Naturally Aspirated Engines
    G09931703Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Intake valve
  2. Valve-seat ring (intake)
  3. Valve guide
  4. Lower valve-spring plate (intake)
  5. Valve stem seal
  6. Set of valve springs (intake)
  7. Upper valve-spring plate (intake)
  8. Valve collet
  9. Upper valve-spring plate (outlet)
  10. Valve spring (two outlet valve springs for turbo engines)
  11. Lower valve-spring plate (outlet)
  12. Valve-seat ring (outlet)
  13. Outlet valve
    14. Fig 2: Identifying Cylinder Head Valves - Turbo Engines
    G09931704Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Cylinder head 1 to 4
  2. Cylinder head gasket 1 to 4
  3. Screw, M8 → Tightening torque: 23 Nm (17 ftlb.) 
  4. Cover
  5. Stopper
  6. Stopper
  7. Restrictor for valve-lift control → Tightening torque: 2 Nm (1.5 ftlb.) 
  8. Cylinder-head screws => For tightening specifications, see Fig 5
  9. Spark plug; when reinstalled → Tightening torque: 25 Nm (19 ftlb.)  ; if fitting new spark plugs → Tightening torque: 30 Nm (22 ftlb.) 
Fig 3: Identifying Cylinder Head
G09931705Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Cylinder head 5 to 8
  2. Screw plug → Tightening torque: 5 Nm (3.5 ftlb.) 
  3. Spark plug; when reinstalled → Tightening torque: 25 Nm (19 ftlb.)  ; if fitting new spark plugs → Tightening torque: 30 Nm (22 ftlb.) 
  4. Cylinder head gasket 5 to 8
  5. Stopper
  6. Restrictor for valve-lift control → Tightening torque: 2 Nm (1.5 ftlb.) 
  7. Stopper
  8. Cover
  9. Cylinder-head screws => For tightening specifications, see Fig 5
    10. Fig 4: Identifying Cylinder Head
    G09931706Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1 to 10  - 1st initial tightening → Tightening torque: 30 Nm (22 ftlb.)  ; 2nd initial tightening → Tightening torque: 50 Nm (37 ftlb.)  ; loosen by 2 turns → Torque angle: 720°  ; 1st turn → Tightening torque: 30 Nm (22 ftlb.)  ; 2nd turn → Tightening torque: 30 Nm (22 ftlb.)  ; 3rd turn and final tightening (torque angle) → Torque angle: 110° 

Fig 5: Cylinder Head Screws Tightening Sequence
G09931707Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Screw plug → Tightening torque: 5 Nm (3.5 ftlb.) 
  2. Threaded bolt => fit with medium-strength securing liquid. Visible length 17 mm (naturally aspirated engine) and 26 mm (turbo engine) (when screwed into cylinder head) 
  3. Screw plug (instead of turbocharger oil line on naturally aspirated engine) → Tightening torque: 15 Nm (11 ftlb.) 
  4. Sealing ring
  5. Sealing ring
  6. Screw plug for secondary air duct → Tightening torque: 15 Nm (11 ftlb.) 
  7. Sealing ring
  8. Screw plug → Tightening torque: 8 Nm (6 ftlb.) 
  9. Stopper
  10. Oil bearing surfaces on camshafts with engine oil
Fig 6: Identifying Cylinders Catches
G09931708Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Stopper
  2. Screw plug → Tightening torque: 8 Nm (6 ftlb.) 
  3. Sealing ring
  4. Screw plug for secondary air duct → Tightening torque: 15 Nm (11 ftlb.) 
  5. Sealing ring
  6. Sealing ring
  7. Screw plug (instead of turbocharger oil line on naturally aspirated engine) → Tightening torque: 15 Nm (11 ftlb.) 
  8. Threaded bolt => fit with medium-strength securing liquid. Visible length 17 mm (naturally aspirated engine) and 26 mm (turbo engine) (when screwed into cylinder head) 
  9. Oil bearing surfaces on camshafts with engine oil
    10. Fig 7: Identifying Cylinders Catches
    G09931709Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Valve cover for cylinders 1 to 4 (align over bar ignition modules)
  2. Oil cap
  3. Aluminum screw  , M6 x 20; hall sender (phase sensor); always use new aluminum screws → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
  4. Hall sender
  5. Sealing ring
  6. Valve cover seal
  7. Valve cover seal, inner
  8. Seal for hydraulic valve for camshaft control
Fig 8: Identifying Valve Cover Seals (Cylinders 1 To 4)
G09931710Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Valve cover for cylinders 5 to 8 (align over bar ignition modules)
  2. Hall sender
  3. Aluminum screw  , M6 x 20; hall sender (phase sensor); always use new aluminum screws → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
  4. Sealing ring
  5. Valve cover seal
  6. Valve cover seal, inner
  7. Seal for hydraulic valve for camshaft control
    8. Fig 9: Identifying Valve Cover Seals (Cylinders 5 To 8)
    G09931711Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Fig 10: Cylinders Valve Cover Screw Tightening Sequence (1 To 4)
G09931712Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Fig 11: Cylinders Valve Cover Screw Tightening Sequence (1 To 4)
G09931713Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Fig 12: Identifying Bar Ignition Modules And Valve Cover Screws (Cylinders 1 To 4)
G09931714Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Valve cover for cylinder bank 1 to 4 (align over bar ignition modules)
  2. Bar ignition module
  3. Aluminum screw  , M6 x 20; bar ignition module; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
  4. Aluminum screw  , M6 x 30; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
  5. Cap
  6. Steel screw  to eyelet → Tightening torque: 23 Nm (17 ftlb.) 
  7. Eyelet
  8. Aluminum screw  , M8 x 35 (on torque support); always use new aluminum screws; → Initial tightening: 10 Nm (7.5 ftlb.)  and → Final tightening: 90° Steel screw  to eyelet.
Fig 13: Identifying Bar Ignition Modules And Valve Cover Screws (Cylinder Bank 5 To 8)
G09931715Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Valve cover for cylinder bank 5 to 8 (align over bar ignition modules)
  2. Eyelet
  3. Steel screw  to eyelet → Tightening torque: 23 Nm (17 ftlb.) 
  4. Aluminum screw  , M6 x 30; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
  5. Bar ignition module
  6. Aluminum screw  , M6 x 20; bar ignition module; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
  7. Sheetmetal holder
  8. Cap
  1. Camshaft (outlet)
  2. Camshaft (intake)
  3. Hydraulic valve for variable valve-lift control
  4. Screw, M5 x 12 → Tightening torque: 6 Nm (4.5 ftlb.) 
  5. Switching tappet (oil with engine oil)
  6. Flat-base tappet (oil with engine oil)
  7. Stopper
  8. Mounting saddle 1 to 4
  9. Stopper
  10. Bearing locations (oil with engine oil)
  1. Direction of travel
    2. Fig 14: Identifying Camshafts (Cylinder Bank 1 To 4)
    G09931716Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Screw, M6 x 35 → Tightening torque: 13 Nm (9.5 ftlb.) 
  2. Housing
  3. Dowel sleeve
  4. Housing (intake)
  5. Housing (outlet)
  6. Screw, M6 x 70 → Tightening torque: 13 Nm (9.5 ftlb.) 
  7. Bearing surfaces (oil with engine oil)
  1. Direction of travel
    2. Fig 15: Identifying Camshaft Mount (Cylinder Bank 1 To 4)
    G09931717Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Switching tappet (oil with engine oil)
  2. Flat-base tappet (oil with engine oil)
  3. Camshaft (intake)
  4. Hydraulic valve for variable valve-lift control
  5. Screw, M5 x 12 → Tightening torque: 6 Nm (4.5 ftlb.) 
  6. Camshaft (outlet)
  7. Stopper
  8. Mounting saddle, cylinders 5 to 8
  9. Stopper
  10. Bearing surfaces (oil with engine oil)
  1. Direction of travel
    2. Fig 16: Identifying Camshafts (Cylinders 5 To 8)
    G09931718Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Dowel sleeves
  2. Housing (intake)
  3. Screw, M6 x 70 → Tightening torque: 13 Nm (9.5 ftlb.) 
  4. Housing
  5. Screw, M6 x 35 → Tightening torque: 13 Nm (9.5 ftlb.) 
  6. Housing (outlet)
  7. Bearing surfaces (oil with engine oil)
  1. Direction of travel
    2. Fig 17: Identifying Camshaft Mount (Cylinders 5 To 8)
    G09931719Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Fig 18: Identifying Camshaft Housing And Screws
G09931720Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Screw, M12 Tighten fully after setting timing  .; new screw must be used; Initial tightening, Step 1 → Tightening torque: 10 Nm (7.5 ftlb.)  ; Initial tightening, Step 2 → Tightening torque: 30 Nm (22 ftlb.)  ; Initial tightening, Step  3 (torque angle) → Torque angle: 100°  ; Loosening process, Step 1 → Torque angle: 90°  ; Loosening process, Step 2 → Torque angle: 360°  ; Final tightening, Step 1 → Tightening torque: 30 Nm (22 ftlb.)  ; Final tightening, Step 2 (torque angle) → Torque angle: 135° 
  2. Camshaft controller with integrated hexagon for countering
  3. Hydraulic valve for camshaft control
  4. Screw, M5 x 12 → Tightening torque: 6 Nm (4.5 ftlb.) 
  1. Cylinders 1 to 4
  2. Cylinders 5 to 8
    3. Fig 19: V8 Turbo Engine Identification
    G09931721Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Outlet camshaft identification (green)
  2. Intake camshaft identification (blue)
  3. Intake camshaft identification (blue)
  4. Outlet camshaft identification (green)
  1. Cylinders 1 to 4
  2. Cylinders 5 to 8
    3. Fig 20: V8 Naturally Aspirated Engine Camshaft Identification
    G09931722Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Outlet camshaft identification (green)
  2. Intake camshaft identification (white)
  3. Intake camshaft identification (white)
  4. Outlet camshaft identification (green)
Fig 21: Camshaft Housing Identification
G09931723Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Matching number for cylinder head/intake camshaft housing, cylinder 1 (E1)
  2. Matching number for cylinder head/intake camshaft housing, cylinder 2 (E2)
  3. Matching number for cylinder head/intake camshaft housing, cylinder 3 (E3)
  4. Matching number for cylinder head/intake camshaft housing, cylinder 4 (E4)
  5. Matching number for cylinder head/outlet camshaft housing, cylinder 1 (A1)
  6. Matching number for cylinder head/outlet camshaft housing, cylinder 2 (A2)
  7. Matching number for cylinder head/outlet camshaft housing, cylinder 3 (A3)
  8. Matching number for cylinder head/outlet camshaft housing, cylinder 4 (A4)

arrow  - Direction of travel

  1. Double-chain camshaft drive
  2. Camshaft sprocket with integrated hexagon for countering
  3. Screw, M12 Tighten fully after setting timing  .; screw must be replaced; 1st turn → Tightening torque: 10 Nm (7.5 ftlb.)  ; 2nd turn → Tightening torque: 50 Nm (37 ftlb.)  ; final tightening (torque angle) → Torque angle: 90° 
  4. Deflector rail
  5. Screw, M8 x 35 → Tightening torque: 32 Nm (24 ftlb.) 
  6. Camshaft-to-camshaft guide pad
  1. Direction of travel
    2. Fig 22: Identifying Timing Chain And Sprockets
    G09931724Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Crankshaft sprocket
  2. Friction plates/diamond washers; reusable 
  3. Oil pump drive chain
  4. Drive in spring wedge with a plastic hammer 
  5. Oil pump
    6. Fig 23: Identifying Oil Pump Chain Drive
    G09931725Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Threaded peg → Tightening torque: 35 Nm (26 ftlb.) 
  2. Threaded peg → Tightening torque: 20 Nm (15 ftlb.) 
  3. Guide rail
  4. Tensioning rail
  5. Chain tensioner with sealing ring; always use new sealing ring → Tightening torque: 60 Nm (44 ftlb.) 
  6. Pin (for locking the oil-pump tensioning rail)
  1. Direction of travel
    2. Fig 24: Identifying Timing Chain And Chain Guide
    G09931726Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Timing-case cover
  2. Timing-case cover seal, outer right (fill openings with sealant, see  6)
  3. Timing-case cover seal, inner
  4. Timing-case cover seal, rib
  5. Timing-case cover seal, outer left (fill openings with sealant, see 6)
  6. Sealant application on timing chain housing; Loctite 5900 (000.043.204.35 status 10/08)
    7. Fig 25: Identifying Timing-Case Cover Seals
    G09931727Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. When timing-case cover is fitted, apply sealant to joint before fitting valve covers
  2. When timing-case cover is fitted, apply sealant to joint before fitting valve covers
    3. Fig 26: Identifying Engine Sealant Applying Area
    G09931728Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. When timing-case cover is fitted, apply sealant to joint before fitting valve covers 20 mm  - Length of sealant applied to joint
    2. Fig 27: Identifying Valve Cover Sealant Applying Area
    G09931729Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Aluminum screw  , M6 x 30; timing-case cover to crankcase and cylinder head; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
  2. Aluminum screw  M6 x 55; inner timing-case cover to upper part of crankcase and cylinder head; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90°  ; Outer timing-case cover to cylinder head → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
  3. Aluminum screw  , M8 x 55; timing-case cover (location of chain tensioner) to upper part of crankcase and cylinder head; always use new aluminum screws; → Initial tightening: 10 Nm (7.5 ftlb.)  and → Final tightening: 90° 
  4. The timing-case cover must be level with the lower part of the crankcase (use steel rule or dial gauge)
    5. Fig 28: Timing-Case Cover Screws Tightening Sequence
    G09931730Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Joint flange (oil sealing lip with engine oil); align with sleeve or vibration balancer
  2. Aluminum screw  , M6 x 20; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
  3. Aluminum screw  , M6 x 55; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
  4. Sealing ring; always replace
  5. Chain tensioner → Tightening torque: 60 Nm (44 ftlb.) 
    6. Fig 29: Identifying Chain Tensioner
    G09931731Courtesy of PORSCHE CARS NORTH AMERICA, INC.
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