In the world of custom builds, there are projects that follow a plan—and then there are those that evolve through pure determination, problem-solving, and passion. This 2004 Mitsubishi Colt, now powered by a Lexus-derived 3UZ V8, falls firmly into the latter category: a hands-on, learn-as-you-go build that transformed a neglected conversion into a tyre-shredding street machine.
From Marketplace Find to Full-Blown Project
The journey began with a chance find on Facebook Marketplace—a partially completed and poorly executed conversion that many would have overlooked. Originally a fire service vehicle based in Cape Town, the Colt had already undergone a V8 transplant, but the setup was far from functional.
Taking on the challenge meant stepping into unfamiliar territory. With no prior experience owning or working on a V8—let alone a Lexus powerplant—the owner was faced with a steep learning curve. What followed was a deep dive into wiring, troubleshooting, and fabrication.
Sorting the Electronics and Drivetrain
At the heart of the build sits the Lexus 3UZ V8, paired to a 5-speed automatic transmission. The initial setup relied on a Spitronics system to control the transmission, which proved unreliable and difficult to tune, especially in a smaller town with limited support.
Rather than abandoning the project, the owner turned to research and persistence. By reworking the wiring and integrating the original Lexus ECU, both the engine and transmission were brought back to life. This marked a major turning point, with the car finally running through the gears smoothly and reliably.
Cooling Challenges Solved
As with many engine swaps, cooling quickly became a critical issue. Overheating threatened the progress made—until a custom solution was implemented.
The system now includes a BMW 740i radiator, a 17-inch electric fan, and a Tru-Cool 40K transmission cooler mounted up front. This combination proved highly effective, stabilizing temperatures at a consistent 85°C and turning the Colt into a dependable runner.
Supporting Mods and Mechanical Refinement
Beyond the core engine and cooling setup, the build received extensive supporting modifications:
- A fully custom prop shaft
- Replacement of nearly all sensors
- A 6-bar Bosch fuel pump paired with a 4-bar restricted filter
- A custom 76mm stainless steel dual exhaust system
- Twin speed boxes for an aggressive exhaust note
These upgrades transformed the car into something that not only performs but commands attention.
Interior Rebuild and Custom Touches
Inside, the Colt underwent a complete transformation. What began as a stripped and neglected interior was rebuilt from scratch.
A custom gauge cluster was fabricated, incorporating all essential readings along with a GPS-based speedometer and odometer. The owner also experimented with carbon fiber work, adding unique, handcrafted details that reflect the personal nature of the build.
Garage-Built Paint with a Personal Touch
In true DIY fashion, the Colt received a full respray in the owner’s father’s garage. Finished in a silver and blue flip-flop paint, the car shifts tone depending on the light, giving it a distinctive and eye-catching appearance.
The involvement of the owner’s father adds another meaningful dimension to the project, highlighting the shared effort and support behind the build.
Performance and Personality
With everything working together, the Colt has become what every project car aims to be—fun.
It delivers strong performance, easily shredding tyres and producing a loud, unmistakable V8 sound through its custom exhaust. Its sleeper nature makes it even more entertaining, often catching more powerful and expensive cars off guard.
There is a particular satisfaction in seeing it outperform vehicles like Audi and BMW models—something the owner describes as both amusing and rewarding.
An Ongoing Evolution
Despite the progress, the build is still evolving. Next on the list are knock sensor installations—another technical challenge waiting to be tackled.
But that is the essence of this project. It was never about achieving perfection from the start; it is about continuous improvement, learning, and enjoying the process.
Final Thoughts
This 2004 Mitsubishi Colt V8 swap stands as a testament to what can be achieved with determination and hands-on effort. From a botched conversion to a fully functional, tyre-smoking machine, every aspect of the car reflects persistence and problem-solving.
More than just a build, it is a journey—one that continues to grow with every modification and every lesson learned.
