Cylinder Boring & Honing
Bores cut and honed to size with controlled surface finish for ring seating.
- Cylinder boring to standard or oversize
- Plateau honing and finish verification
Our Facility
A facility built for precision reconditioning — not general repairs
PRT Engineering Works is set up as an engine reconditioning and machining facility. Work flows through dedicated stations so each stage — strip, clean, inspect, machine, measure, assemble — is done in the right place with the right tooling.
Machining & measurement stations
The stations that carry out the work
Stations are described by the work they perform. The confirmed in-house machinery behind them is listed below.
Crankshaft Grinding
Main and crankpin journals ground to required undersize with verified geometry.
- Main & crankpin journal grinding
- Run-out and finish verification
Line Boring
Main bearing housings machined in one set-up to restore a single true axis.
- Restoring main bore alignment
- Bearing housing sizing
Surfacing & Block Work
Block and head deck faces machined true for dependable sealing.
- Deck surfacing
- Component thread and fitment repair
Valve & Seat Reconditioning
Valve guides and seats restored so valves seal consistently.
- Guide reconditioning
- Seat cutting and sealing verification
Measurement & Gauging
The shop's measuring standard — bores, journals, decks and clearances are verified.
- Dimensional inspection of bores and journals
- Clearance verification during assembly
In-house machinery & tooling
Comprehensive in-house machining and inspection capabilities
PRT operates the machining, cleaning, measurement, testing and assembly equipment below as part of its own facility. Capabilities are named as confirmed by PRT; machine makes, models and specification sheets will be added as PRT supplies them.
Machining & surfacing
- Cylinder boring machine
- Cylinder honing machine
- Portable boring machine
- Line boring machine
- Main housing / tunnel boring machine
- Camshaft bush line boring machine
- Crankshaft grinding machine
- Crankshaft polishing machine
- Crankshaft straightening press
- Cylinder head resurfacing / surface grinding machine
- Cylinder block resurfacing / surface grinding machine
- Valve seat cutting machine
- Valve seat grinding machine
- Valve refacing / valve grinding machine
- Valve guide boring / reaming equipment
- Connecting rod boring machine
- Connecting rod honing machine
- Small-end bush boring machine
- Big-end resizing equipment
- Hydraulic press
- General-purpose lathe
- Bench grinder
Repair & specialist tooling
- Connecting rod alignment checker
- Valve guide replacement tools
- Welding equipment
- Metal stitching equipment
- Broken-stud removal equipment
- Thread repair / insert tools
Cleaning & testing
- Hot wash cleaning machine
- High-pressure component washer
- Chemical cleaning tank
- Cylinder head pressure tester
- Engine block pressure-testing equipment
- Engine test bench
- Oil-pressure testing setup
- Compression testing equipment
Inspection & measurement
- Magnetic particle crack detector
- Dye penetrant inspection kit
- Bore gauges
- Dial bore gauges
- Outside micrometers
- Inside micrometers
- Vernier calipers
- Dial indicators
- Height gauges
- Surface plate
- Straight edges
- Feeler gauges
- Precision measuring instruments
Assembly & handling
- Torque wrenches
- Torque-angle tools
- Engine assembly benches
- Engine stands
- Engine hoists / cranes
- Parts-cleaning stations
- Parts storage / identification system
Specialist support
Some processes run through trusted partners
Certain specialist processes can be arranged externally when required as part of the overall reconditioning requirement.
The specialist processes below are arranged through established external partners rather than being operated in-house at PRT. They are listed so a customer knows the full range is available — and knows exactly which equipment sits with PRT and which sits with a partner.
- Cooling-system pressure testing equipment
- Injector tester
- Fuel pump test bench
- Turbocharger balancing machine
- Turbocharger test equipment
- Dynamic balancing machine
- Flywheel resurfacing machine
- Flywheel balancing machine
- Clutch pressure-plate resurfacing equipment
Workflow
How work moves through the facility
Work follows the reconditioning route through the shop, so a component only reaches a machining station once inspection and measurement say it is ready.
01
Strip & clean
Engines are received, disassembled and cleaned so components can be assessed.
02
Inspect
Crack detection and condition checks happen before any machining is planned.
03
Measure
The measuring area verifies bores, journals, decks, housings and clearances.
04
Machine
Boring, honing, grinding, surfacing and line boring restore components to spec.
05
Assemble
A controlled assembly area brings measured components together in sequence.
Precision & measurement
Reconditioned to measurement. Not guesswork.
The measuring area is not an afterthought to the machining hall — it is what decides whether machining happens at all. The same discipline governs clearances during assembly.
Get a Quote
Discuss a job with the facility
Contact PRT about an engine or component. Scope is confirmed from the actual unit, its condition and its specification.