Valve Dimensions

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NOTE:

Intake and exhaust valves must not be refaced by grinding. Only lapping is permitted.

Fig 1: Identifying Valve Dimensions

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Dimension		Intake Valve	Exhaust Valve
Diameter a	mm	26.80•••27.00	29.80•••30.00
Diameter b	mm	5.95•••5.97	5.94•••5.95
c	mm	104.84•••105.34	103.64•••104.14
α	∠°	45	45