- vacuum retard unit
- A vacuum control unit for retarding the spark
Dictionary of automotive terms. 2015.
vacuum retard unit
Look at other dictionaries:
retard unit — See vacuum retard unit … Dictionary of automotive terms
vacuum retard delay valve — (VRDV) delays a decrease in vacuum at the distributor vacuum advance unit when the source vacuum decreases. Used to delay release of vacuum from a diaphragm a momentary vacuum trap … Dictionary of automotive terms
vacuum retard — A vacuum control unit for retarding the spark … Dictionary of automotive terms
vacuum delay valve — (VDV) a valve used by GM to bleed ported vacuum to the vacuum advance unit through a small orifice and control vacuum advance rate. Used to retard or delay the application of a vacuum signal. Also called delay valve … Dictionary of automotive terms
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