SEAT Workshop Service and Repair Manuals > Leon Mk1 > Power unit | 4-cylinder injection engine (5-valve), mechanical system | Engine cylinder head, valve gear | Repairing valve gear | Reworking valve seats

Reworking inlet valve seat

Dimension		Inlet valve seat
Ø a	mm	26.2
b	mm	max. perm. rework dimension → Note
c	mm	1,5…1.8
Z		Lower edge of cylinder head
α	°	45° valve seat angle
β	°	30° upper correction angle
γ	°	60° lower correction angle

¹⁾	Calculating max. permissible reworking dimension → Anchor.

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