Lifter Bore Machining & Sleeving

Lifter bores can wear out or become distorted over time due to heat, oiling issues, or valve train stress. This can lead to poor lifter operation, valve noise, and reduced engine performance.

Machining involves enlarging the bore to fit a larger lifter, while bronze sleeving restores the original bore size so the existing lifters can be reused. The best option depends on the engine’s condition and your performance goals.

Bronze sleeves provide a durable, low-friction surface that improves lubrication and wear resistance. They’re especially beneficial for high-performance or racing applications where precision and stability are critical.

Yes — using our CNC blueprint machining technology, we can correct factory misalignments and ensure consistent lifter geometry, which improves valve timing accuracy and stability.

No — while it’s common in high-performance and V8 engines, lifter bore machining and sleeving can also restore reliability in standard road engines affected by wear or damage.

You’ll gain improved valve train stability, reduced friction, better oil control, and extended component life — all key to a smoother, more reliable engine.