Engine Overhaul in Pursuit of Missing Power: Initial Stage

In the heart of Toyota's Production Engineering Division, a team of three enthusiasts is working tirelessly to bring back to life a piece of the company's rich history. Led by Jan Samuel Stein, the team is restoring the S-Type engine, a crucial component of the Toyopet Racer, a cigar-shaped open-wheel racing car developed over 70 years ago.

The engine restoration team comprises Shuhei Suzuki, a designer from the Powertrain Development Division No.1 who recently joined Toyota; Jiei Nakahodo, a technician from the NC Data Section; and Megumi Ishikuro, who supports vehicle development through virtual reality and cross reality technologies.

The team's mission is to achieve an output above 30 horsepower, surpassing the original S-type engine's rating. To do this, they are meticulously dismantling the engines, with careful attention given to the removal of certain components to ensure they can be reassembled.

The S-type engine started production in 1947 and remained in production until 1959. It is the first and last side-valve engine in Toyota's history. The team found one authentic component for reference: the first generation Toyota S-type engine, housed in the Toyota Automobile Museum. During the restoration process, they also discovered another S-type engine, which they named "Leaders." This engine served as a guide in restoring the disassembled engine.

The restoration work involved disassembling the engines down to every single bolt and seal, checking each part's condition, and determining how to make them suitable for reuse. The team spent a significant amount of time cleaning and mending engine parts, as they had rust and dirt from long-term storage. Shinmei Industry, a Toyota partner company with expertise in automobile maintenance, vehicle production, and historic car restoration, aided the team in this process. Shinmei staff taught the team techniques for cleaning and polishing engine parts for reuse.

The team was also fortunate to have the guidance of Minoru Ishikawa, a legendary mechanic in the world of historic cars. He is an advisor to Shinmei and has received a Medal with Yellow Ribbon and recognition as a Contemporary Master Craftsman in automobile maintenance. Unlike the three team members, Minoru Ishikawa had seen the S-type engine before, providing invaluable insights and learning experiences.

Each team member gained valuable insights and learning experiences during the engine restoration process. As they work towards their goal, they are not only reviving a piece of Toyota's history but also contributing to the advancement of vehicle development through their innovative use of virtual reality and cross reality technologies. The revival of the Toyopet Racer, powered by a restored S-Type engine, promises to be a significant milestone in Toyota's journey.