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Engine Mech., Fuel Injection & Ignition
Audi TT Quick Reference Specification Book • May 2009
39
Valve Dimensions
Dimension
Intake valve
Exhaust valve
Dia. a
mm
33.85 ± 0.10
28.0 ± 0.1
Dia. b
mm
5.98 ± 0.01
5.96 ± 0.01
c
mm
104.0 ± 0.2
101.9 ± 0.2
α
degrees
45
45
Camshaft – Tightening Torques
Component
nm
Tighten bolts 1 - 6 in sequence
8 plus an
additional 90°
(¼ turn)