On the day of the 1969 Spanish Grand Prix, Blash accidentally cut off parts of a newer, larger front wing from aluminium panels.

[6] After the death of Rindt during qualifying at the 1970 Italian Grand Prix, Blash took on responsibilities of management within Lotus until he walked out along with several employees.

When I saw my apartment for the first time, it was Wednesday afternoon.."[6] In 1973, Blash became the team manager for Brabham having worked on their Formula Two project.

Blash was offered a job with Yamaha and joined the company as their sporting director, overseeing its relationships with Jordan and later Tyrrell.

Since December 1995, Blash has also acted as the Fédération Internationale de l'Automobile (FIA)'s Deputy Race Director at all Grands Prix.

[3][4] Blash has worked with Yamaha for 30 years since the Brabham days and Activa Technology, and acts as a consultant to the Japanese company involved in their World Superbike race programme.