Cylinder heads operate under high thermal and mechanical loads throughout the engine's service life. In our experience, continuous operation gradually affects valve seats, valve guides, valves, and other critical components. As operating hours increase, wear becomes evident and combustion efficiency starts to deteriorate. Regular inspection of cylinder head and cylinder liners is therefore an important part of planned engine maintenance, whether the engine is installed onboard a vessel, in a power plant, or in an industrial installation.
Based on decades of practical field experience, RA Power Solutions repair and recondition cylinder head and cylinder liners to restore combustion efficiency, sealing performance, and engine reliability while maintaining OEM tolerances.
Whenever a cylinder head arrives at our workshop, we carry out a detailed inspection before recommending any repair. The objective is to determine whether the components can be restored within OEM limits or require replacement.
Whenever a cylinder head arrives at our workshop, we carry out a detailed inspection before recommending any repair. The objective is to determine whether the components can be restored within OEM limits or require replacement.
Our inspection typically includes:
When cylinder heads and cylinder liners are repaired and overhauled together, we also check component matching before re-assembly to ensure reliable engine operation.
In many engines, excessive wear is limited to the valve seating surfaces rather than the complete cylinder head. Where the wear remains within acceptable limits, we recommend restoring the seating surfaces instead of replacing major components
Our repair work includes:
Using dedicated valve lapping equipment, we restore the valve seat geometry to the original profile specified by the engine manufacturer. If inspection shows excessive wear or damage to the valve seat or valve, replacement is recommended to maintain compression and combustion efficiency.
Cylinder heads occasionally develop cracks due to thermal stress, cooling water leakage, or prolonged service under heavy load. In such cases, we first determine the extent of the damage through inspection and MPI testing.
Where repair is technically feasible, we recommend metal stitching and metal locking, a proven cold repair method that eliminates the need for welding.
The process offers several advantages:
This repair method is widely accepted for cast components because it preserves the original metallurgical properties of the casting and avoids the risks associated with heat-based repairs.
To help reduce engine downtime, we maintain a stock of reconditioned cylinder heads for a wide range of marine and industrial diesel engines.
Each cylinder head undergoes the following:
For operators facing urgent breakdowns, supplying a reconditioned cylinder head is often a practical alternative while repairs are being planned.
Whether repairs are carried out during scheduled overhaul, drydock, or an emergency engine breakdown, we always recommend restoring cylinder heads in accordance with the engine manufacturer's specifications.
Maintaining the correct dimensions and sealing surfaces is essential for reliable combustion, cooling efficiency, and the long-term service life of the cylinder head and cylinder liners.
We repair, recondition, and maintain a stock of cylinder heads and cylinder liners for a wide range of marine and industrial diesel engines, including:
We also support numerous engine models, including:
