The Mercedes OM617, a workhorse of a diesel engine found in older Mercedes-Benz vehicles, has a reputation for reliability and longevity. This has led some to consider swapping this Mercedes Diesel Old engine into Ford trucks. This article explores the feasibility and challenges of such a project, focusing on the unique aspects of the OM617 and its compatibility with older Ford platforms.
The Appeal of the Mercedes Diesel Old OM617 Engine
The OM617 is a five-cylinder, naturally aspirated diesel engine renowned for its durability. Its simple mechanical design and robust construction make it a popular choice for those seeking a dependable and fuel-efficient powerplant. In its heyday, this mercedes diesel old engine powered various Mercedes models, including sedans, wagons, and even the iconic G-Wagon.
Challenges of a Mercedes Diesel Swap
While the OM617’s reputation is enticing, several challenges arise when considering its installation in an older Ford truck:
1. Physical Dimensions and Fitment:
The OM617, while not excessively large, has different dimensions than Ford’s gasoline and diesel engines of the same era. Significant modifications to the engine bay, including potential crossmember adjustments and firewall alterations, may be necessary. Oil pan clearance is a particular concern, often requiring custom fabrication or a modified oil pan.
2. Transmission Compatibility:
The original Mercedes transmission may not be ideal for a Ford truck application. Adapting the OM617 to a suitable Ford transmission requires a custom adapter plate or bellhousing. This often involves precise machining and careful alignment to ensure proper functionality and avoid drivetrain vibrations.
3. Engine Mounts:
Custom engine mounts are essential for securely positioning the OM617 within the Ford chassis. Fabricating these mounts demands accurate measurements and strong welding skills to withstand the engine’s weight and operating forces. Improperly designed mounts can lead to engine movement and potential damage.
4. Wiring and Electronics:
Integrating the OM617’s electrical system with the Ford truck’s wiring harness presents another hurdle. While the OM617 is mechanically simple, its electrical components differ significantly from those found in Ford trucks. This requires careful planning and potentially custom wiring solutions to ensure proper functionality of all systems, including starting, charging, and instrumentation.
5. Fuel System Modifications:
The OM617 requires a specific fuel delivery system, including a mechanical fuel pump and injection lines. Adapting the Ford fuel system to accommodate the OM617 may involve modifying the fuel tank, lines, and potentially installing a lift pump to provide adequate fuel pressure.
Considerations for a Successful Swap
For those determined to undertake this challenging project, careful planning and meticulous execution are crucial:
- Thorough Research: Understanding the intricacies of both the OM617 and the target Ford truck is paramount. Online forums, dedicated Mercedes and Ford communities, and technical manuals are invaluable resources.
- Precise Measurements: Accurate measurements of the engine bay, transmission tunnel, and other critical areas are essential for determining fitment and planning necessary modifications.
- Fabrication Skills: Custom fabrication of engine mounts, adapter plates, and other components is often required. Proficiency in welding, metalworking, and general mechanical skills is crucial.
- Professional Assistance: Consulting with experienced mechanics or engine swap specialists can provide valuable insights and guidance throughout the process.
Conclusion
Swapping a mercedes diesel old OM617 engine into an older Ford truck is a significant undertaking, demanding considerable time, effort, and expertise. While the potential rewards of increased fuel efficiency and legendary Mercedes reliability are attractive, the challenges should not be underestimated. With meticulous planning, strong fabrication skills, and a deep understanding of both vehicles, a successful swap can be achieved, resulting in a unique and potentially rewarding truck.
