Converting an oil-cooled engine to a liquid-cooled engine is a complex and involved process that requires significant modifications and engineering expertise. While it may be technically possible to convert a Royal Enfield Himalayan's oil-cooled engine to a liquid-cooled one, it is not a simple task and is not recommended for most individuals due to the following reasons:
Design Differences: Oil-cooled and liquid-cooled engines have fundamentally different designs. A liquid-cooled engine has additional components such as a radiator, coolant pump, hoses, and a more intricate cooling system. Retrofitting these components into an existing oil-cooled engine can require extensive modifications to the engine, frame, and other parts of the motorcycle.
Engineering Challenges: Converting to a liquid-cooled system involves modifying the engine's internal components to accommodate coolant passages for efficient cooling. This process requires careful consideration of coolant flow, temperature regulation, and maintaining proper clearances within the engine.
Frame Modifications: Liquid-cooled engines often require different mounting points and brackets for the radiator, coolant reservoir, and associated components. Modifying the frame of the motorcycle to accommodate these new components may be necessary, which can be a complex and time-consuming task.
Electronics and Control Systems: Liquid-cooled engines typically have additional sensors, fans, and control systems to monitor and manage engine temperature. Retrofitting these electronic systems into an oil-cooled engine may require significant electrical modifications and integration with the motorcycle's existing wiring harness and ECU (Engine Control Unit).
Given the complexity, cost, and expertise required for such a conversion, it is generally more practical and cost-effective to sell your oil-cooled Royal Enfield Himalayan and purchase a motorcycle that already comes with a liquid-cooled engine if that is your desired configuration. It's essential to consult with professional motorcycle mechanics and engineers who have experience with engine modifications before attempting such a conversion.