When is it actually necessary to have a engine block to be drilled? And what does engine block drilling exactly in? These are questions that many car owners and garages ask when dealing with a worn or damaged engine block. Engine block drilling is a crucial operation within the engine overhaul process, where cylinder walls are enlarged and prepared for oversized pistons.

At Van Thiel Motor Revision we perform engine block drilling with extreme precision, using modern machinery and years of expertise. The result? An engine block that once again meets the right tolerances, performs optimally and is ready for thousands of reliable kilometres.

Engine Block Drilling

Engine block drilling is a precise operation needed when cylinder walls are damaged or worn out. By drilling out and possibly honing the block, we make room for oversize pistons. This will make your engine powerful, reliable and efficient again. In this page, we explain what engine block drilling entails, when it is needed, and why it is important for a successful engine revision.

What is engine block drilling?

Engine block drilling is a precision operation that involves enlarging or repairing the cylinders of an engine block. This step is essential when cylinder walls are damaged or worn out, for example due to abrasion, overheating or stalling. By re-drilling the engine block and fitting appropriate oversize pistons, we ensure perfect sealing and reliable engine operation.

Benefits of engine block drilling

Engine cylinder drilling offers several technical and economic benefits, especially if it is carried out as part of an engine overhaul. Below you can read why having your cylinders drilled is a wise choice:

Extended engine life
Restoring power and efficiency
Cost savings compared to a new engine
Prevention of further engine damage
Perfect basis for complete engine overhaul

Engine block drilling - Van Thiel Motoren Revision

Why is engine block drilling necessary?

At a engine revision the engine block is thoroughly inspected. If the cylinder walls are no longer in original condition - think scratches, ovalisation or cracks - is engine block drilling often necessary. This prevents oil loss, compression loss and power drop, and extends the life of your engine.

Good to know: The drilling of the cylinders is almost always followed by the honing of the engine block, for proper surface texture and sealing.

The process of engine block drilling

At Van Thiel Motor Revision we use professional machines and measuring equipment to accurately drill out the cylinders:

Engine block inspection
Determining the correct oversize
Precision machining of cylinders
Finished with honing
Mounting of oversize pistons

Each step is checked for dimensional accuracy, roundness and surface quality to ensure a technically perfect end result.

What does engine block drilling cost?

The cost of engine block drilling depends on the number of cylinders, engine construction and whether additional work is required (such as honing or cylinder head revision). At Van Thiel Motoren Revisie, we have honest and transparent rates. You can also choose engine block drilling as a separate service, without a full overhaul.

For an accurate quotation, please contact or our page on engine overhaul costs view.

When is engine block drilling necessary?

Deep scratches or wear in the cylinder wall
Compression loss or oil consumption
Stalled engine or overheating
During a complete engine overhaul as a preventive measure

In doubt about whether cylinder drilling is needed? Contact us for a no-obligation diagnosis of your engine block.

Choose craftsmanship at Van Thiel Motoren Revisie

Personal advice or no-obligation quote?

At Van Thiel Motor Revision we combine years of experience with modern equipment. Whether for engine block drilling, engine revision, diesel engine overhaul or cylinder head revision - we make sure your engine performs like new again.