Lifter Bore Machining

What this service addresses

Lifter bores locate components in the valve-train system. Wear, damage or a build-specific dimension can raise questions about machining, but a bore change must account for the engine and intended lifters. Copper State Machine Shop offers lifter bore machining as part of its CNC engine work. Contact us to discuss your block, intended lifters and the requirements of your specific application.

Before deciding on the work

• Existing bore condition and the particular engine design affect what can be proposed.
• The intended lifters and any build dimensions are important before a bore-size change is discussed.
• The relationship to the rest of the valve train means cylinder machining alone does not address a lifter-housing concern.

What to bring or include

• The block, engine identification and the lifters or component information you intend to use.
• A description identifying the affected lifter bores and any existing measurements.
• Build notes and prior machining history, especially any earlier lifter-bore changes.

Planning the job

1. 01

   Identify the lifter housing concern and whether it relates to wear, damage or a planned build.

2. 02

   Discuss the block’s condition with the intended lifter dimensions and engine requirements.

3. 03

   Confirm the lifter bore machining scope and the component dimensions needed for your build.

Lifter Bore Machining: common questions

Related services

• CNC Engine Machining
• Engine Block Boring
• Valve Jobs