Valve Clearance

Valve clearance Hydraulic valve clearance compensation

Timing*: Inlet opens, large lift
997 9° after top dead centre
997S 11° after top dead centre

Timing*: inlet closes, large lift
997 61° after bottom dead centre
997S 59° after bottom dead centre

Timing*: inlet opens, small lift
997 39° after top dead centre
997S 39° after top dead centre

Timing*: inlet closes, small lift
997 19° after bottom dead centre
997S 19° after bottom dead centre

Timing*: outlet opens
997 50° before BDC
997S 50° before BDC

Timing*: Outlet closes
997 4° before TDC
997S 4° before TDC

* Timing in late position with 1 mm valve lift and zero clearance