1999 Volvo Penta "WT" Models Workshop Manual, Page 261Get this manual
Engine Specifications Valve Systems:
Lifter Type Hydraulic, Roller Followers Rocker Arm Ratio 1.70 to Net lash Valve LashIntake and ExhaustValve Face Angle (IE) 45 Valve Seat Angle (IE)46 Valve Seat Runout {IE) 0.002 in(0,051 mm) MaxStem to Guide Clearance Intake, Production 0.00100.0029 ;n{0,0250,0737 mml 0.00120.0031 in(O,0300,077 mm) Exhaust, Production 0.00100.0037 in{O,0250,094 mm} Intake, Service 0.00120.0049 ;n{0,0300,124 mml Exhaust, Service Recommended Valve Seat Width Intake '32 to '16 in(O,7941,587 mm) Exhaust';6 to 332 in(1,5872,381 mm) Valve Spring Installed Height 0.0312 in( 0,794 mm) 1.838 in(46,685 mm) Valve Spring Pressure LbIn{N mml Closed 7179 1.838 {316351 46,6851 LbIn{N mml Open238262 1.347 {10591165 34,2131 Installed Height 1132 in(0,794 mm)
Engine Lubrication: