THE REAL REASON WHY MY YASHIO FACTORY S15 SILIVA HASN'T BEEN FINISHED...

Summary

The video follows Jimmy as he works on restoring his drift car, a special Yashio S15. He removes the current turbo setup and installs a new turbo, manifold, and piping to increase the car's power. Jimmy talks through the history of the car, his plans for it, and other shop updates. Overall, it's an in-depth look at upgrading a drift car with glimpses into the Japanese drift scene.

Takeaways

• 🚗 The car discussed has had its transmission oil checked and is not currently in need of repairs; it's considered 'done' except for a check on the front main seal.
• 🔧 Focus shifts to working on the 'OG Yashio Factory S15', a car with a significant history and connection to Okachan, a renowned figure in the Sylvia and SR platform automotive scene.
• 🏎️ The Yashio Factory S15 has a storied past, including being a championship-winning car and undergoing a rebuild with Okachan for improved performance.
• 🛠️ The rebuild process included a new engine and turbo setup but faced challenges that led to a decision to reverse some changes to restore the car's desired performance characteristics.
• 🔩 The video details the technical aspects of the car's rebuild, including the choice of a new turbo, exhaust manifold, and the importance of proper boost control and exhaust flow.
• 🔧 The narrator emphasizes the importance of reversing certain modifications to improve the car's performance and bring it closer to its original state.
• 🛠️ Discussion includes technical details like the choice of turbo size, exhaust manifold design, and the addition of a new RB25 transmission for an R34 GTT Skyline.
• 💡 The process of rebuilding the car involves meticulous planning and parts selection, aiming to enhance its performance while maintaining its unique character.
• 🚀 The rebuild is motivated by a passion for drifting, with the narrator sharing personal anecdotes about getting into the sport and the influence of Okachan.
• 📈 The narrative concludes with future plans for the car, including further modifications and the ambition to use it in grassroots drift competitions.

Q & A

What car are they mainly working on in this video?

They are mainly working on the OG Yashio Factory S15 drift car.

Who is Okachan and why is he significant?

Okachan is the owner of Yashio Factory and is considered the god of Sylvias, Sassis, and SR engines in Japan. He helped get Chris into drifting in Japan.

What is the history of the S15 they are working on?

It used to be a championship winning university drift car. The original owner gave it back to Okachan after achieving his goals. It sat for 10 years before Okachan let Chris use it.

Why are they removing the G25 turbo?

They want to try a bigger G3660 turbo to make more power. The G25 is still a good turbo though.

Why change the exhaust manifold?

The current manifold routes the wastegate too close to other components. The new R-Tech manifold will relocate it away from everything.

What transmission are they planning to swap in?

They plan to swap in an RB25 transmission from a Skyline GTT.

What modifications are planned to help reduce turbo lag?

Possible modifications mentioned are a larger turbine housing, electronic throttle body, and anti-lag.

What events are they planning to compete in with the car?

The plan is to use it for grassroots drift events like All Stars and competitions at Ebisu Minami.

What further work is needed on the R34 Skyline?

Mainly just tidying up wiring, redoing oil/water lines, and possibly retesting power levels on a dyno.

What car will they be working on next?

The next car mentioned that needs engine work is the abandoned S15, details were not provided.