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Valve Spring Servicing

  1. Remove valve springs as previously described and check for wear or fatigue. Replace as necessary and install with closely wound coils next to cylinder head.
  2. Check installed height with special tool (P 10) and add or remove spacers under the valve spring to attain specified installed height. Installed height for all valve springs should be 1.346-1.358" (34.2-34.5 mm) with valve closed.
    Fig 1: Measurement of Valve Spring Installed Height
    G09332242Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Add or remove spacers to attain specified height. 

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