Audi TT Platform 2009 - Crankshaft Dimensions; Identification on Crankshaft Bearing, Top; Piston and Connecting Rod - Tightening Torques

Engine Mech., Fuel
Injection & Ignition
Audi TT Quick Reference Specication Book • May 2009 25
Crankshaft Dimensions
Honing
dimension
Crankshaft bearing pins-
diameter (mm)
Connecting rod bearing
pins-diameter (mm)
Basic dimension 54.00 -0.017 -0.037 47.80 -0.022 -0.042
1st oversize 53.75 -0.017 -0.037 47.55 -0.022 -0.042
2nd oversize 53.50 -0.017 -0.037 47.30 -0.022 -0.042
Stage III 53.25 -0.017 -0.037 47.05 -0.022 -0.042
Identication on Crankshaft Bearing, Top
Arrow points in direction of travel.
The upper bearing shells are allocated to the cylinder block with the
correct thickness from the factory. Colored spots serve to identify
the bearing thicknesses. The letters marked on the lower sealing
surface of the cylinder block identify which bearing thickness must be
installed in which location. If color markings can no longer be read,
use the blue bearing shell. The lower crankshaft bearing shells are
always shipped as a replacement part with a yellow color marking.
Letter on crankshaft Color of bearing
G Yellow
B Blue
W White
Piston and Connecting Rod – Tightening Torques
Component Nm
Connecting rod bearing cap to connecting rod bolts 45 plus an
additional 90°
(¼ turn)
Pressure relief valve to oil spray jet 27