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Home >> BMW >> 2014 >> M6 2D Convertible, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 664 (Engine - Technical Data) >> Cylinder Head With Valve Seat Cover >> N55 Engine >> 11 12 Cylinder Head with Valve Seat Cover

11 12 Cylinder Head with Valve Seat Cover

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2017 BMW 550i GT xDrive, 2017 BMW 535i GT xDrive, 2017 BMW 535i GT, 2016 BMW 550i GT xDrive, and 2016 BMW 535i GT xDrive. However, it is still accessible from the selected car via links, so may be relevant.
CYLINDER HEAD WITH VALVE SEAT COVER SPECIFICATION

Valve seat angle ° 45
Correction angle: outer ° 35
Correction angle: Inner, exhaust valve ° 60
Correction angle: Inner, inlet valve ° 65
Valve seat width: Intake mm 1.25+0.2
Valve seat width: Exhaust mm 1.65+0.2
Ø theoretical valve seat    
Valve seat surface: Outside dia. inlet mm 30.4+0.1
Valve seat surface: Outside dia. exhaust mm 26.6+0.1
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