Valve dimensions (VW Lt 2d)

The valve dimensions are given in Table 4.2 and shown in the figure 4.24. The camshaft markings are shown in the figure 4.25 and together with the valve timing is given in table 4.3. Thermal clearance of valves: intake valve - 0.2 mm, exhaust valve - 0.3 mm.

Table 4.2. Valve dimensions

Parameters	Inlet valve	Exhaust valve
Diameter "a" of the valve plate, mm	31.9-32.1	39.9-40.1
Valve stem diameter "b", mm	6.952-6.970
Valve seat angle "∞", *	30	45

Table 4.3. Marking of the camshaft and valve timing

Engine code	AGK	ATA
1st cylinder (arrow A)	4010
2nd cylinder (arrow B)	MWM
Between cylinders 4 and 5 (arrow C)	980 142
Opening of the 1st intake valve after TDC,*	5.3
Closing of the 1st intake valve after BDC, *	32.0
Opening of the 2nd intake valve before TDC, *	37.0
Closing of the 2nd intake valve after BDC, *	31.7
Exhaust valve opening before BDC*	55.6
Closing of the exhaust valve after TDC, *	5.0