Precision Cylinder Boring – FAQs


Cylinder boring is the process of enlarging and re-machining the cylinder bores in an engine block to remove wear, scoring, or damage. It restores proper shape and prepares the bores for oversized pistons and rings, ensuring a precise fit and strong compression.

If your engine has low compression, excessive oil consumption, or visible cylinder damage, it may need boring. We’ll measure your block and advise whether it’s within tolerance or requires machining.

Boring removes material to correct shape and size, while honing refines the surface finish for proper piston ring sealing. They’re often done together as part of the reconditioning process.

Our CNC Machining Centre delivers exceptional precision — restoring cylinders to exact factory specifications (or custom performance tolerances) with perfect roundness and alignment.

Most can, but it depends on the amount of wear and how much material can safely be removed. If the damage is too great, we can fit cylinder sleeves to restore the block to standard size.

Yes — by restoring correct clearances and improving compression, cylinder boring enhances power, efficiency, and reliability, especially when paired with new pistons and rings.

Keywords: cylinder boring Auckland, CNC engine boring, oversized pistons, engine block machining, precision cylinder boring FAQs.

Taylor Automotive brings together the heritage of GER Engine Specialists and Taylor Automotive. Our team is built on decades of combined engine building, machining, mechanical repair, and performance work. We believe in doing things properly, with precision, and in keeping vehicles — whether daily drivers, classics, racers or fleets — performing their best.

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