Engine Mech., Fuel Injection & Ignition
Audi TT Quick Reference Specification 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