Here's why:
* Internal Components: The internal components of a 2-stroke and 4-stroke engine are designed for their respective cycles. You'd need to replace the crankshaft, connecting rod, pistons, valves (if present), and other components to accommodate the different timing and combustion processes.
* Lubrication System: 2-stroke engines mix oil with fuel for lubrication, while 4-stroke engines have separate oil sump and lubrication systems.
* Exhaust System: 2-stroke exhaust systems are typically simpler than 4-stroke systems, designed for the rapid exhaust cycle.
* Intake and Transfer Ports: 2-stroke engines rely on transfer ports for intake and scavenging, while 4-stroke engines use valves for these functions.
Instead of conversion, you'd need to rebuild the engine entirely, essentially starting from scratch with a 4-stroke design. This involves:
1. Choosing a 4-stroke engine: Decide the type of 4-stroke engine (e.g., single-cylinder, multi-cylinder, air-cooled, water-cooled) that suits your needs.
2. Acquiring components: Source the necessary components like the crankshaft, pistons, connecting rods, valves, cylinder head, and other parts for a 4-stroke engine.
3. Engine Assembly: Assemble the components based on the 4-stroke engine design.
4. Modifications: Adapt the existing frame, transmission, and other components to fit the new 4-stroke engine.
In summary, directly converting a 2-stroke engine into a 4-stroke engine is not possible. Building a new 4-stroke engine from scratch is the only way to achieve the desired functionality.
