Volkswagen Workshop Service and Repair Manuals > Polo Mk3 > Power unit | 4-cylinder injection engine (2-valve), mechanics | Engine cylinder head, valve gear | Repairing valve gear | Assembly overview - valve gear | Valve dimensions

Reworking valve seats > < Valve timing at 1 mm valve lift

Valve dimensions

Valve dimensions

Note

Valves must not be reworked. Only lapping-in is permitted.

Inlet valve

V15-0024

Dimension		Engine code
		ADX	AEA	AEE	AEX ANX APQ	AER	AEV	AKV	ALL
Ø a	mm	32.1	35.6	35.6	35.6	31.0	32.0	32.0	31.0
Ø b	mm	6.963	6.963	6.963	6.963	6.967	6.963	6.963	6.967
c	mm	94.5	94.8	94.8	94.8	94.8	99.3	99.3	94.8
α	∠°	45	45	45	45	45	45	45	45

Exhaust valve

Dimension		Engine code
		ADX	AEA	AEE	AEX ANX APQ	AER	AEV	AKV	ALL
Ø a	mm	29.0	29.0	29.0	29.0	26.0	29.0	29.0	26.0
Ø b	mm	6.943	6.943	6.943	6.943	6.950	6.943	6.943	6.950
c	mm	95.0	95.0	95.0	95.0	94.5	99.1	99.1	94.5
α	∠°	45	45	45	45	45	45	45	45

Power unit
4-cylinder injection engine (2-valve), mechanics
Engine cylinder head, valve gear
Repairing valve gear / sembly_overview_valve_gear/">Assembly overview - valve gear
Valve dimensions

Reworking valve seats > < Valve timing at 1 mm valve lift