* Smaller, older diesels: Engines like the 2.2L Isuzu or older versions of the Volkswagen Rabbit diesel (like the 1.6L) have been used. These are generally smaller and lighter, making them potentially easier to fit into the Bronco II's engine bay. However, they also typically offer less power and torque than larger options. Finding parts and adapting everything (wiring harnesses, etc.) can also be challenging.
* Larger diesels (more challenging): Larger diesels, such as some of the older GM or Ford diesels (like some of the 6.2L or 6.9L), would offer significantly more power and torque but present significantly more challenges. These engines are much larger and heavier, requiring extensive modifications to the engine bay, possibly including chassis reinforcement. Adapting the transmission, drivetrain, and wiring will be a major project.
Important Considerations:
* Space constraints: The Bronco II's engine bay is relatively small. Any diesel swap will require careful planning and likely some custom fabrication.
* Weight: Diesel engines are typically heavier than gasoline engines, potentially impacting handling and stressing the Bronco II's chassis.
* Transmission: You'll need a transmission capable of handling the diesel engine's torque, which may require a complete transmission swap. The stock transmission might not hold up.
* Wiring and electronics: The diesel engine's wiring harness will likely need to be integrated into the Bronco II's electrical system, which can be complex.
* Fuel system: Diesel fuel systems are different from gasoline systems and require adaptation.
* Emissions: Depending on where you live, you may need to address emissions compliance for the swapped diesel engine.
In short: While technically feasible, a diesel swap in a Bronco II is a complex project best suited for experienced mechanics with fabrication skills and a willingness to invest considerable time and money. Research specific engine swaps and look for forums and online communities dedicated to Bronco II modifications for more detailed information and real-world examples. Start with a thorough assessment of the space constraints and the scope of the modifications needed before selecting an engine.
