Removing Pistons - GT3: Notes

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Ingress of dirt

Danger of material damage due to blocked oil bores/oil ducts.

→ Absolute cleanliness is essential when working on the engine.

→ Lay removed engine parts on a clean base and make sure to cover them.

→ Use the cover for dust protection when fitting the engine NR.165 on the engine assembly support.

Component overview:

Fig 1: Overview Of Pistons And Cylinders

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Item	Number	Designation	Removal	Installation
1	2	Cylinder housing	Check and clean sealing faces, identify sealing faces (cyl. 1-3 or 4-6)
2	6	Cylinder sleeve	Clean, check for wear, identify (cyl. 1, 2, 3...), assign to pistons accordingly	Only install with a new piston (see Item 7) if required, coat running surface with new engine oil
3	6	O-ring, 104.0 x 2.0		Replace, fit with special grease (000.043.205.10), do not turn
4	12	O-ring, 110.0 x 2.50		Replace, fit with special grease (000.043.205.10), do not turn
5	12	Piston-pin circlip		Replace; ensure correct seating
6	6	Piston pin	Clean, assign to the corresponding piston	Coat with new engine oil
7	6	Pistons	Check for wear (shank diameter), identify according to cylinder sequence	Install new pistons, if required, only with a new cylinder sleeve, coat piston shank with new engine oil
8	6	Piston ring package	Check for wear	Replace if necessary
9	8	Straight pin, A 8.0 x 14	Check for signs of damage	Check for correct seating, replace if necessary
10	2	Cylinder base gasket		Replace, observe installation position (Top marking must be facing the observer)