Volkswagen Workshop Service and Repair Manuals > Polo Mk4 > Engine | 4 - Cyl. injection engine (4-valve, rolling rockers) | Engine cylinder head, valve gear | Head - disassemble and assemble | Valve command - repair | Distribution times for 1 mm valve gap

Valve seats - grind > < Identification

Distribution times for 1 mm valve gap

Distribution times for 1 mm valve gap

		Intake valve	Exhaust valve
Open later	UNP	22.0°	--------
Close later	LNP	10.0°	--------
Open before	LNP	---------	6.0°
Close before	UNP	---------	17.0°

Valve quotas

Note

Milling of valves is not allowed, only seating is allowed.

Continue installation in removal reversed order.

V15-0024

Specification		Intake valve	Exhaust valve
Ø a	mm	22.5	20.0
Ø b	mm	5.973	5.953
c	mm	101.77	101.62
α	∠°	45	45

Engine
4 - Cyl. injection engine (4-valve, rolling rockers)
Engine cylinder head, valve gear / Head - disassemble and assemble / lve_command_repair/">Valve command - repair
Distribution times for 1 mm valve gap

Valve seats - grind > < Identification