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Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine - Specifications, Mechanical >> General (B5254T2; 2005-2006) >> Specifications, Mechanical >> Valve seats

Valve seats

Fig 1: Identifying Valve Seat Angles
GLL102650Courtesy of VOLVO CARS OF NORTH AMERICA.
Upper reduction angle (A) 
Inlet........20°
Exhaust........15°
Matching surface angle (B) 
Inlet/Exhaust........45°
Lower reduction angle (C) 
Inlet/Exhaust........60°
Valve seat, width (a) 
Inlet........1.4-1.8 mm
Exhaust........1.8-2.2 mm
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