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Home >> Volkswagen >> 2004 >> GTI VR6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (1.8L - Engine Mechanical, Engine Code(S): AWD, AWW, AWP (A4 Platform)) >> 15 - Engine - Cylinder head, Valvetrain >> Valvetrain >> Valvetrain, assembly overview >> Valve dimensions

Valve dimensions

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Fig 1: Identifying Valve Dimensions
GW00000103Courtesy of VOLKSWAGEN UNITED STATES, INC.
NOTE:
  • Valves must not be refaced. Only lapping is permitted.
Dimension Intake valve Exhaust valve
Dia. a mm 26.9 29.9
Dia. b mm 5.963 5.943
c mm 104.84 to 105.34 103.64 to 104.14
α ∠ ° 45 45
NOTE:
  • Worn sodium-filled exhaust valves must not be scrapped without first being properly treated. The valves must be cut at the middle of the shaft using a metal saw. While doing this, do not come into contact with water. At the very most, throw 10 of the prepared valves into a bucket filled with water. Then, move quickly away, because a sudden chemical reaction will occur during which the sodium is burnt away. The treated parts may then be discarded through conventional disposal channels.