At BLUMAR MARINE, we offer expert overhaul services for 4-stroke cylinder heads, connecting rods, and liners to enhance engine performance and ensure reliability.

Cylinder Head Overhaul:
The cylinder head is removed, dismantled, and thoroughly inspected for cracks, warping, or excessive wear. Special attention is given to the valve seats, valve guides, and valve pockets, which are checked for wear and resurfaced if necessary. The combustion chamber is cleaned of carbon deposits, and valve springs and retainers are inspected for correct tension and functionality. After testing, the cylinder head is reassembled with new gaskets and components to restore it to optimal condition.

Connecting Rod Overhaul:
The connecting rods are carefully removed and checked for signs of fatigue, cracks, or bending. The big end and small end of the connecting rod are measured to ensure they meet manufacturer tolerances. The bearings and bushings are inspected for wear, and any worn or damaged components are replaced. The connecting rod is then reassembled, and proper alignment is confirmed to ensure smooth and reliable engine operation.

Liner Overhaul:
The cylinder liners are inspected for wear, scoring, or corrosion, and precise measurements are taken to check for ovality or taper. If necessary, the liner is honed or replaced to restore the correct diameter and smooth finish. Cooling passages are inspected for blockages or scaling, and pressure testing is conducted to ensure there are no leaks. The liner is then reinstalled, ensuring it fits perfectly to provide efficient sealing and cooling.

Our thorough overhaul procedures for these critical engine components reduce the risk of failure, enhance performance, and extend the lifespan of the engine, ensuring your vessel operates at peak efficiency.