Audi TT Platform 2009 - Piston Ring Clearance; Piston and Cylinder Dimensions; Cylinder Head - 2.0 L Engine - CCTA; Crankcase Ventilation - Tightening Sequence

Engine Mech., Fuel
Injection & Ignition
Audi TT Quick Reference Specication Book • May 2009 31
Piston Ring Clearance
Piston ring (dimensions in mm) New Wear limit
Compression ring 0.04 to 0.09 0.15
Tapered ring 0.03 to 0.06 0.15
Oil scraping ring 0.02 to 0.06 0.15
Piston and Cylinder Dimensions
Reconditioning
dimension, dimensions in mm
Piston
diameter
Cylinder bore
diameter
Basic dimension 83.965 84.010
Cylinder Head – 2.0L Engine – CCTA
Crankcase Ventilation – Tightening Sequence
Step Component Nm
1 Tighten bolts 1 – 10 in sequence 11