Setting Camshaft Timing

WARNING: This page is about a different variant/trim than selected.

Information

Unless otherwise specified, the engine must not be turned against the running direction of the engine.

Turn crankshaft 90° against the running direction of the engine.
Remove bearing saddle -1- .
1. 2.1 Unscrew screws -2- .
  1. 2.1.1 Replace screws.
2. 2.2 Carefully loosen and remove the bearing saddle -1- .
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Bearing saddle
Tighten the chain tensioner.
1. 3.1 Unscrew screws -Arrows A- .
  1. 3.1.1 Replace screws.
2. 3.2 Insert T40243 - lever-1- and secure with screws -Arrows A- .
3. 3.3 Press and hold the circlip -2- on the chain tensioner.
4. 3.4 T40243 - Lever-1- must now be pressed slowly in -Arrow direction B- and secured.
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Special tool for chain tensioner
Lock -1- chain tensioner using T40267 - staking tool-2- .

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Securing chain tensioner
Disassemble the T40243 - lever-1- .
1. 5.1 Unscrew screws -Arrow A- .
2. 5.2 Remove the T40243 - lever-1- .
3. 5.3 Fit and tighten new screws -Arrow A- .
  > Initial - tightening 4 Nm (3 ftlb.)
  
  > Final tightening +90°
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Special tool for chain tensioner
Remove upper guide rail -1- .
1. 6.1 Release catch on upper guide rail -1- .
2. 6.2 Pull upper guide rail -1- forward and remove it.
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Upper guide rail
Remove chain tensioner for oil pump -1- .
1. 7.1 Press clamp in -Arrow direction- and lock it using T40011 - locking pin-3- .
2. 7.2 Unscrew guide pin -2- and remove oil pump chain tensioner -1- .
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Oil pump chain tensioner
Loosen the guide and tension rail.
1. 8.1 Remove guide rail -1- .
  1. 8.1.1 Unscrew guide pin -3- .
  2. 8.1.2 Pull guide rail down and out to the side -1- .
2. 8.2 Loosen tension rail -2- .
  1. 8.2.1 Unscrew guide pin -4- .
  2. 8.2.2 Guide tension rail -2- downwards and leave it in that position.
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Guide and tension rails
Remove camshaft control chain.
Lock outlet camshaft.
1. 10.1 Secure T40271 - camshaft clamp /1 -1- on the cylinder head.
2. 10.2 Turn camshaft gear -2- with T40266 - adapter-1- in -Arrow direction A- until the marking on the camshaft gear -2- corresponds to the marking on the cylinder head cover.
3. 10.3 Push T40271 - camshaft clamp /1 -1- into the splines of the camshaft gear -2-Arrow B- .
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Securing the outlet camshaft
Lock intake camshaft.
1. 11.1 Secure T40271 - camshaft clamp /1 -1- on the cylinder head.
2. 11.2 Turn camshaft gear -2- with T40266 - adapter-3- in -Arrow direction B- until the marking on the camshaft gear -2- corresponds to the marking on the cylinder head cover.
3. 11.3 Push T40271 - camshaft clamp /2 -1- into the splines of the camshaft gear -2-Arrow A- .
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Securing the intake camshaft

Information

Once maximum pointer deflection is reached, the piston is at top dead centre (TDC).
Move cylinder 1 to TDC position.
1. 12.1 Turn crankshaft slowly in direction of rotation of the engine until maximum deflection of the pointer on the VAS 6079 - dial gauge-2- is reached.
2. 12.2 Reset VAS 6079 - dial gauge-2- to zero.
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Dial gauge on cylinder 1

Information

You will need a second mechanic to help you with this step.
Re-position camshaft control chain.
1. 13.1 Position camshaft control chain with the relevant coloured chain link facing the marking on the crankshaft gearwheel.
2. 13.2 Fit camshaft control chain on the camshaft gears in such a way that the coloured chain links are aligned with the markings -1- on the camshaft gears. Turn the camshafts slightly using T40266 - adapter if necessary.
3. 13.3 Check the timing markings.
  1. 13.3.1 Check that markings -1- are still aligned with markings -2- .
  2. 13.3.2 Using the VAS 6079 - dial gauge check that the first cylinder is still in TDC .
  13.4 Only if timing is not OK:
  
  Remove control chain and repeat steps 13.1 to 13.3.
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

TDC markings on crankshaft and camshafts
Secure the guide and tension rail.
1. 14.1 Secure the tension rail -2- .
  1. 14.1.1 Position tension rail -2- .
  2. 14.1.2 Fit and tighten guide pins -4- .
  > Tightening - torque 20 Nm (15 ftlb.)
2. 14.2 Install guide rail -1- .
  1. 14.2.1 Position the side guide rail -1- .
  2. 14.2.2 Fit and tighten guide pins -3- .
> Tightening - torque 20 Nm (15 ftlb.)

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Guide and tension rails
Fit upper guide rail -1- .

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Upper guide rail
Remove T40267 - staking tool-2- from chain tensioner -1- .

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Securing chain tensioner
Install oil pump chain tensioner -1- .
1. 17.1 Position oil pump chain tensioner -1- .
2. 17.2 Fit and tighten guide pins -2- .
  > Tightening - torque 9 Nm (6.5 ftlb.)
3. 17.3 Draw T40011 - locking pin-3- out of the clamp.
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Oil pump chain tensioner
Remove T40271 - camshaft clamp /1 and T40271 - camshaft clamp /2.
1. 18.1 Use T40266 - adapter to relieve T40271 - intake camshaft and draw camshaft clamp /1 out of the splines.
2. 18.2 Use T40266 - adapter to relieve outlet camshaft and draw T40271 - camshaft clamp /2 out of the splines.
3. 18.3 Unscrew and remove T40271 - camshaft clamp /1 and T40271 - camshaft clamp /2.
Perform two revolutions of the engine and check the timing again.
1. 19.1 If the timing is OK: Remove special tools.
2. 19.2 If timing is not OK: Reset the timing.
Install bearing saddle -1- .
1. 20.1 Fit bearing saddle -1- .
2. 20.2 Fit and tighten new screws -2- .
  Initial tightening 4 Nm (3 ftlb.)
  
  Final tightening + 180°
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Bearing saddle