Crankshaft Dimensions; Identification On Crankshaft Bearing, Top; Piston And Connecting Rod - Tightening Torques - Audi TT Platform 2009 Quick Reference

Honing
dimension
Basic dimension
1st oversize
2nd oversize
Stage III

Identification on Crankshaft Bearing, Top

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
G
B
W
Piston and Connecting Rod – Tightening Torques
Component
Connecting rod bearing cap to connecting rod bolts
Pressure relief valve to oil spray jet
Audi TT Quick Reference Specification Book • May 2009

Crankshaft Dimensions

Crankshaft bearing pins-
diameter (mm)
54.00 -0.017 -0.037
53.75 -0.017 -0.037
53.50 -0.017 -0.037
53.25 -0.017 -0.037
Arrow points in direction of travel.
Connecting rod bearing
pins-diameter (mm)
47.80 -0.022 -0.042
47.55 -0.022 -0.042
47.30 -0.022 -0.042
47.05 -0.022 -0.042
Color of bearing
Yellow
Blue
White
nm
45 plus an
additional 90°
(¼ turn)
27
25