Passat L4-1984cc 2.0L DOHC (9A) (1990)
Valve: Specifications
Valve Dimensions
NOTE: Do not reface the valves, only lapping is permissible.
CAUTION Exhaust valves are filled with sodium and should not be scrapped without first observing certain precautions:
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Cut the valves in the center of the stem using a steel saw.
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Do not allow the valve or the sodium content to come in contact with water while sawing!
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Once valves have been cut in this manner; drop them ten at a time into a bucket filled with water. Stand back because a chemical reaction will
occur. The valve can afterward be treated as common metal scrap.