Line Boring

Precision Engine Block Line Boring Solutions

ARA Engine uses the latest line boring machines to restore worn-out and damaged line bores with maximum precision.

Our onsite premises are located in the Greater Western Sydney region. Using the latest line boring technology manufactured by world-class providers, we deliver quality line boring and line honing services to meet the specific needs of private, commercial and industrial clients.

Over time, engine blocks can become worn, damaged and out-of-round, causing engine block bearings to seize and spin. ARA Engine provides comprehensive resizing and alignment services for diesel, petrol, locomotive and marine engines, helping restore your engine block to precise factory-quality tolerances.

Line boring & honing

From precision measurements to advanced line boring and honing technology, ARA Engine delivers accurate engine block machining solutions designed to restore performance, improve alignment and extend engine life.Our line boring services are suitable for:

Precision Line Boring Technology

ARA Engine uses the latest line boring and line honing equipment to restore worn main bearing tunnels and other critical engine block surfaces with maximum accuracy.

The AMC Schou L2500V Line Boring Machine can resize main bearing bores up to 110mm in diameter and 2540mm maximum length, with a spindle speed of 0–750 RPM for precise control and a smooth, accurate finish.

Restoring main bearing bores to the correct specifications can:

Correct bore alignment so crankshafts and cams rotate smoothly
Increase the lifespan of the engine block
Help main bearings resist warping caused by temperature changes
Restore worn and damaged bores to factory-quality tolerances

For line honing, the Sunnen Line Hone CH1000 has a diameter range of 46–178mm and can remove less than .003” of material from the caps, making it highly effective for correcting warping, distortion and misalignment.

Engine Block Line Boring Specialists

ARA Engine is made up of licensed and experienced technicians specialising in line boring for most types of engines. With over 30 years of experience in engine reconditioning, we provide precision machining solutions backed by extensive industry knowledge.

From agriculture and construction to forestry, locomotive, marine, mining, transport and private vehicles, your engine reconditioning requirements can be handled under one roof.

Increase Engine Lifespan

Restore worn bearing tunnels and critical engine components to the correct specifications.

Precision Machining

Advanced line boring and honing equipment delivers accurate alignment and consistent results.

Licensed Professionals

Experienced technicians provide reliable machining and engine reconditioning services.

Quality-Controlled Results

Every engine block is carefully inspected and machined to achieve dependable results.

Our Proven Engine Block Line Boring Process

From assessment to precision machining, every stage is completed with attention to detail to support reliable engine performance.

Initial Assessment

We begin with a thorough inspection of the engine block to identify worn, damaged, distorted or out-of-round bearing tunnels and determine the required machining process.

Inspection & Measurement

Our technicians carefully inspect and measure the engine block to identify alignment issues, wear, distortion and other damage affecting engine performance.

Cleaning & Component Inspection

The engine block and related components are thoroughly cleaned and assessed to determine which areas require machining and further attention.

Precision Line Boring & Honing

Using advanced equipment such as the AMC Schou L2500V and Sunnen Line Hone CH1000, we accurately resize and align the main bearing bores to the required specifications.

AMC SCHOU L2500V

Main bearing tunnels in worn engines often exceed factory specifications. To rectify this, the AMC Schou L2500V re-machines the bores to factory-quality tolerances.

With a capacity of 2500mm in length and the ability to machine diameters of up to 680mm, the L2500V can also re-machine worn thrust faces and camshaft tunnels.

Sunnen Line Hone CH1000

Sunnen Line Honing is extremely accurate, allowing us to re-size main bearing bores to tolerances that can exceed original factory OE specifications for concentricity and alignment.

With a diameter range of 46–178mm and minimal material removal from caps, the Sunnen Line Hone CH1000 provides an efficient solution for correcting warping, distortion and misalignment.

Everything You Need to Know About Engine Block Line Boring

Have questions about our engine block line boring and honing services? Explore our frequently asked questions to learn more about the process, equipment, applications and warranty support.

What is engine block line boring?

Engine block line boring is a precision machining process used to restore worn, damaged or misaligned main bearing tunnels to the correct diameter and alignment.

Why is line boring important for engine reconditioning?

Line boring restores correct alignment and dimensions in worn engine blocks, helping crankshafts and cams rotate smoothly and allowing bearings to operate within the required specifications.

What is the difference between line boring and line honing?

Line boring removes material to accurately resize and align worn bearing tunnels, while line honing provides a highly precise finishing process to achieve the required bore size, concentricity and alignment.

What engines can ARA Engine line bore?

ARA Engine provides line boring and engine reconditioning services for diesel, petrol, locomotive, marine, commercial, industrial and private vehicle engines.

What is the AMC Schou L2500V used for?

The AMC Schou L2500V is used to re-machine worn main bearing tunnels, thrust faces and camshaft tunnels while maintaining precise factory-quality tolerances.

What is the Sunnen Line Hone CH1000 used for?

The Sunnen Line Hone CH1000 is used to accurately re-size and finish main bearing bores, correcting distortion, warping and misalignment to achieve precise concentricity and alignmen

Why choose ARA Engine for line boring?

ARA Engine combines licensed technicians, more than 30 years of engine reconditioning experience and advanced machining technology to deliver accurate and reliable line boring services.