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