1977 Triumph Spitfire 1500 Tuneup - Valve Lash and Dynamic Timing

The car being tuned is a US Federal car that has been modified through the addition of Dual Su HS4 carbs, Flat Top Pistons and a shaved head (CR ~ 9.5). The car runs on 93 Octane (US). This video shows: Specifications and and a diagnosis chart Tools used Vacuum testing and diagnosis Valve Lash Setting Spark Plug Indexing Dynamic Timing Final Verification of Improvement The video is shot using Samsung S7 phone and Sony Handycam DCR-SX41. The video is processed using Shotcut software on a 2012 Dell Inspirion that has been converted to a Ubuntu (Jammy Jellyfish) operating system.