The allure of a diesel engine—its torque, its efficiency, its distinctive sound—is undeniable. For those seeking diesel power in a smaller package, the “Diesel Clone” engine offers an intriguing option. This article delves into the world of modifying these Yanmar-style diesel clones, exploring potential upgrades and addressing common concerns.
Power Up Your Diesel Clone: Modification Strategies
A forum user recently posed a question about modifying a newly acquired 6HP DuroPower diesel clone. His goal: to significantly boost horsepower while maintaining reliability. He outlined initial plans, including porting and polishing the head, upgrading the exhaust and air intake, and adjusting the fuel screw. He also expressed interest in more ambitious modifications, like shortening the rocker arms, boring the engine, and even adding a turbocharger. The responses from other forum members provided valuable insights and alternative approaches.
Tapping into the Potential: Expert Advice on Diesel Clone Mods
Several experienced diesel enthusiasts weighed in on the original poster’s plans, offering a range of suggestions and cautions. One member recommended against stacking head gaskets to address potential blowouts, suggesting O-ringing the block instead. He also highlighted the transformative power of a small turbocharger in boosting diesel performance, drawing from his experience with a modified Ford diesel truck. Another member echoed the turbocharger recommendation and suggested experimenting with propane injection.
Taking a different approach, one user advised focusing on maximizing the engine’s inherent low-end torque. He recommended using a genuine TAV (Torque-A-Verter) and modifying the drive clutch for lower RPM engagement, allowing the diesel engine to shine in its optimal operating range.
Addressing Concerns and Exploring Alternatives: Diesel vs. Gas
The discussion also touched on the complexities of modifying diesel engines. One member cautioned against internal modifications without sufficient knowledge and experience, emphasizing the potential for damage from excessive boost, over-revving, or improper fuel adjustments. He highlighted the significant differences between diesel and gasoline engines, particularly in terms of combustion characteristics and chamber pressures. He also directed readers to an older forum thread on diesel mini bikes for further information. Another contributor shared a YouTube video showcasing a custom-built diesel mini bike, providing a visual demonstration of the possibilities.
The conversation expanded to include topics like the reliability of diesel clone engines, the availability of higher horsepower models, and the potential for converting these engines to run on gasoline. One member pointed out the robust construction of the diesel clone blocks, suggesting they could be suitable for high-performance gasoline engine builds capable of handling methanol fuel and significant RPMs.
Conclusion: Weighing the Options for Diesel Clone Performance
Ultimately, the decision of how to modify a diesel clone engine depends on individual goals, experience, and resources. While significant performance gains are possible, careful consideration and expert advice are crucial to avoid costly mistakes and ensure a reliable and enjoyable outcome. Whether opting for bolt-on modifications or delving into internal upgrades, understanding the unique characteristics of diesel engines is paramount. The journey of modifying a diesel clone can be rewarding, leading to a unique and powerful machine that stands out from the crowd.
