Abstract
The article discusses methods for restoring valve seats for the “valve-valve seat” connection using the example of the Honda K20A engine. The characteristics of the above connection, the reasons for its wear and the main signs of wear are presented. Specific parameters and recovery indicators are provided, such as grinding angles, width of the contact zone, permissible alignment deviations, as well as quality control methods. In conclusion, recommendations are presented for choosing the most rational restoration method depending on the degree of wear. The article is of a review nature, as a result of research conducted during the master's thesis.