**Comprehensive Engine Rebuild (4D56 K74)**
1. Remove the engine for a complete overhaul.
2. Conduct a full disassembly of all engine components.
3. Perform a crack test on the engine block to assess structural integrity.
4. Polish the ports of the cylinder head to enhance airflow and performance.
5. Execute a thorough heat machine wash of all components to ensure cleanliness.
6. Repaint the engine block to improve durability and appearance.
7. Apply heat-resistant paint to the rocker cover to provide additional protection.
8. Inspect and replace core plugs within the block as necessary.
9. Conduct a pressure test on the cylinder head to confirm reliability.
10. Reseat the valves to ensure optimal sealing.
11. Rebuild the cylinder head with precision and attention to detail.
12. Hone the cylinder bores to achieve the required specifications.
13. Install new piston rings to enhance engine efficiency.
14. Replace the main bearings to ensure smooth operation.
15. Install a new bottom pulley for optimal performance.
16. Replace the thrust washers to maintain proper alignment.
17. Complete a full gasket replacement to ensure effective sealing.
18. Install new glow plugs to facilitate reliable engine starting.
19. Incorporate a new heavy-duty clutch to accommodate increased power output.
20. Install new timing gear to ensure accurate engine timing.
21. Set up the wastegate actuator to optimize engine performance.
22. Install a new fuel filter to guarantee clean fuel delivery.
23. Replace auxiliary belts to ensure dependable operation.
24. Fill with 7 liters of 15/40 mineral oil for optimal lubrication.
25. Refit the engine, ensuring it is prepared for reliable and effective operation.