Checking Cylinder Head For Distortion, Extent Of Rework And Sealant Application

WARNING: This page is about a different car, the 2020 Porsche Panamera, 2019 Porsche Panamera, 2018 Porsche Panamera, and 2017 Porsche Panamera. However, it is still accessible from the selected car via links, so may be relevant.

Check cylinder head for distortion using a commercially available straight-edge -1- and feeler gauge.
> Control value 0.1 mm

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Cylinder head, straight-edge and feeler gauge
Reworking of the cylinder head (grinding down) is only permitted as far as the minimum dimension -a- .
> Control value 138 mm +/- 0.1 mm

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Extent of rework on cylinder head
Applying sealant on cylinder bank 1 and cylinder bank 2
1. 3.1 Apply beads of sealant -1, 2- as shown to the clean sealing surfaces of the cylinder block and lower timing chain cover.
2. 3.2 Sealant bead thickness: 2 mm.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Applying sealant to cylinder bank 1