Classification Of Pistons And Connecting Rods

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.

Information

For more information, see Porsche Spare Parts Information.
Allocation of connecting-rod bearing shells:

The connecting-rod bearing classification sequence begins at connecting-rod bearings 1+4

The combination of bearing shells red/blue and blue/red have the same tolerance class as yellow/yellow.

Connecting-rod bearing	Permitted colour combinations of bearing shells
top/connecting rod	Yellow	Red	Blue
bottom/connecting rod cap	Yellow	Blue	Red

Insert piston into the cylinder bore.

1.1 Remove connecting-rod bearing cap again.
1.2 Oil the cylinder wall.

1.3 Push piston -1- into the cylinder bore from above by hand according to the marking using the > T40369 - funnel-2- . -arrow-

The arrow on the piston crown must be facing the pulley side of the engine. The marking L or R next to the arrow indicates assignment to the left or right cylinder bank.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Fitting piston

Fit connecting rod and piston -3- on the crankshaft.
1. 2.1 Replace connecting-rod bearing shells and connecting-rod bearing cap screws -1- .
2. 2.2 Oil the running surfaces of the connecting-rod bearing shells.
3. 2.3 Fit connecting rod on the crankshaft.
4. 2.4 Fit connecting-rod bearing cap -2- with new connecting-rod bearing shells on the connecting rod. Check that the retaining lugs are fitted correctly.
5. 2.5 Oil new connecting-rod bearing cap screws -1- , fit them and tighten to > Initial tightening 50 Nm (37 ftlb.) and > Final tightening + 90° .
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Piston and connecting rod on crankshaft
Check the clearance of the oil spray jets.