Tom Woodward, an automotive enthusiast and fabricator, has transformed a diminutive Fiat 126 into a high-performance rally car dream by swapping in a BMW K75 motorcycle engine. The project showcases the potential of small cars when paired with powerful engines.
Key Takeaways
- The Fiat 126 received a 740 cc inline-3 engine from a BMW K75 motorcycle, replacing its original two-cylinder unit.
- This swap increased the power output from around 28 hp to approximately 75 hp, more than doubling the car’s performance capabilities.
- The project included extensive modifications such as custom aluminum components and a full roll cage for added safety and aesthetics.
Woodward acquired the Fiat 126 in its original condition from a local pub parking lot. The restoration process involved removing rust, fabricating massive aluminum fender flares, and installing a full roll cage by Prodrive to enhance structural integrity.
The heart of this transformation is the BMW K75 motorcycle engine, which offers a significant power increase over the stock Fiat unit. With 740 cc displacement and around 75 hp, it provides more than twice the power compared to the original engine’s approximate 28 hp output. The inline-3 configuration also allows for better fitment in the compact engine bay.
Further enhancements include a custom aluminum dashboard, transmission tunnel, and door cards that improve both functionality and aesthetics. Despite these modifications, the car retains its lightweight nature at approximately 1,100 pounds, making it highly responsive to power increases.
Frequently Asked Questions
Why was a motorcycle engine chosen over a car engine?
The BMW K75’s inline-3 configuration fit perfectly within the Fiat 126’s small engine bay, whereas an inline-4 would have been too large. Additionally, motorcycle engines often offer high power-to-weight ratios, making them ideal for performance upgrades.
What future modifications are planned?
Woodward intends to install a tiny Garrett turbocharger to further boost the engine’s output. Given the car’s light weight and compact size, even modest power increases will result in significant performance enhancements.
This project exemplifies how creative engineering can breathe new life into classic vehicles, transforming them from slow city cars into thrilling driving machines without compromising their original charm.
