Skoda Workshop Service and Repair Manuals > Fabia Mk2 > Power unit | 1.2/44; 47; 51; 55 kW MPI engine | Engine cylinder head, valve gear | Repairing the valve gear - Part 2 | Reworking valve seats

Reworking inlet valve seat

For engines with identification characters BBM, CHFA

Dimension		Inlet valve seat
Ø a	mm	33,4
b	mm	max. permissible reworking dimension
c	mm	1,5…1,7
Z		Bottom edge of cylinder head
α		45° valve seat angle
β		30° top correction angle
γ		60° bottom correction angle
S		Combustion chamber surface area

For engines with identification characters BME, BZG, CGPA, CGPB, CEVA, CJLA

Dimension		Inlet valve seat
Ø a	mm	28,7
b	mm	max. permissible reworking dimension
c	mm	1,5…1,8
Z		Bottom edge of cylinder head
α		45° valve seat angle
β		30° top correction angle
γ		60° bottom correction angle
S		Combustion chamber surface area

Skoda Workshop Service and Repair Manuals