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Professional Engine Rebuilding Services

Complete engine restoration for heavy equipment, industrial machinery, and commercial vehicles — precision machining, full overhaul, and factory-spec reassembly.

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Replace: Engine rebuilding
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500+Engines Rebuilt

The Process Explained

What Is Engine Rebuilding?

Engine rebuilding is a comprehensive restoration process that returns a worn, damaged, or underperforming engine to its original factory specification. Unlike a simple service or repair, a full rebuild involves completely dismantling the engine, inspecting every component, and replacing or machining all worn parts before precision reassembly.

For heavy equipment owners and fleet operators, engine rebuilding is significantly more cost-effective than full engine replacement — extending the working life of the unit by years while fully restoring power, efficiency, and reliability.

Complete disassembly
Component inspection
Precision machining
Quality parts replacement
Factory-spec reassembly
Performance testing
Extends Engine Lifespan

A properly rebuilt engine can deliver the same service life as a brand-new unit — at a fraction of replacement cost.

Fully Restores Power & Performance

Lost compression, reduced power, and high oil consumption are eliminated — the engine performs like new.

Reduces Replacement Cost

Engine rebuilding typically costs 40–60% less than purchasing and fitting a new or remanufactured engine.

Our Capabilities

Types of Engine Rebuilding We Offer

Whether it's a massive excavator powerplant or a 20-truck commercial fleet, we have the expertise and equipment to handle it.

01

Complete Engine Overhaul

The most thorough rebuild — every component is disassembled, measured, machined, or replaced. The engine leaves our workshop performing to factory-new specification with full documentation.

  • Full engine strip to bare block
  • Cylinder boring & honing
  • Crankshaft grinding & polishing
  • All worn parts replaced
  • Precision reassembly & testing
02

In-Frame Engine Rebuild

Where downtime is critical, our in-frame rebuild carries out major engine work without fully removing the engine from the vehicle — dramatically reducing turnaround time and labour cost.

  • Engine remains in chassis
  • Pistons, rings & liners replaced
  • Con-rod & main bearings
  • Head gasket & valve train
  • Faster, lower-cost turnaround
03

Industrial & Heavy Equipment Engines

Specialist rebuild for the high-displacement diesel engines powering Nigeria's construction, mining, marine, and oil & gas equipment. We handle the biggest and most demanding powerplants.

  • Excavators — CAT, Komatsu, Hitachi
  • Wheel loaders & bulldozers
  • Cranes & lifting equipment
  • Generators & power units
  • Marine propulsion engines
04

Commercial Fleet Engine Rebuild

Structured fleet rebuild programmes for transport and logistics companies. We work on rotating schedules so your fleet keeps moving while individual units are being rebuilt — zero fleet downtime.

  • Long-haul trucks & tractor units
  • Buses & commercial vehicles
  • Tipper & bulk haulage trucks
  • Scheduled fleet rebuild contracts
  • Full service report per unit

Step by Step

Our Engine Rebuilding Process

Every engine rebuild follows a rigorous, documented process — no shortcuts, no guesswork.

01

Diagnosis & Inspection

A comprehensive diagnostic evaluation fully establishes the engine's condition and identifies all faults — visible and hidden — before any work begins.

Compression TestOil Pressure TestLeak-Down TestVisual InspectionECU Fault Scan
02

Complete Disassembly

The engine is systematically stripped to the bare block. Every component is labelled, measured, and assessed against OEM specification before any decision is made on reuse or replacement.

Full TeardownComponent MeasurementWear AssessmentParts Listing
03

Machining & Repair

Engine block, cylinder head, and crankshaft are machined to precise tolerances. This is the most critical stage — precision here determines how long the rebuild lasts.

Cylinder Boring & HoningCrankshaft GrindingDeck ResurfacingValve Seat CuttingLine Boring (if required)
04

Component Replacement

Only quality-grade components are fitted. We source OEM-approved or premium aftermarket parts — never compromise on parts quality, as it directly affects engine longevity.

Pistons & RingsCylinder LinersMain & Big-End BearingsHead Gasket SetOil & Water SealsTiming Components
05

Reassembly & Performance Testing

The engine is rebuilt to factory torque specifications using calibrated tools. A thorough run-in and performance test confirms correct oil pressure, temperature, compression, and power output before return to service.

Torque-to-Spec AssemblyControlled Run-InOil & Coolant Pressure CheckPerformance VerificationCompletion Report

Workshop Capability

Equipment & Tools Used

Our workshop is equipped with purpose-built engine rebuilding machinery — not general-purpose substitutes.

Engine Stands

Heavy-duty rotating stands rated for high-displacement diesel engines — safe 360° access during full disassembly and assembly.

Cylinder Boring Machines

Precision vertical boring machines for enlarging and truing cylinder bores to accept oversized pistons with mirror-finish surfaces.

Crankshaft Grinding Units

CNC crankshaft grinders achieving micron-level surface finish on main and rod journals — critical for bearing life.

Precision Torque Tools

Digital and mechanical torque wrenches with full calibration certificates — every fastener torqued to exact OEM specification.

Engine Diagnostic Systems

OBD-II and heavy-duty ECU diagnostic tools for accurate pre and post-rebuild fault identification across all makes.

Valve Seat & Guide Equipment

Dedicated cylinder head machines for valve seat cutting, guide replacement, and head surface resurfacing for leak-free operation.

The AutoBore Advantage

Why Choose Us For Engine Rebuilding?

What separates AutoBore Pro is the combination of precision machining capability, experienced engineers, and a commitment to factory-specification results — not just "good enough."

Experienced Engine Technicians

Our engineers have rebuilt diesel and petrol engines across all major OEM brands — CAT, Komatsu, Cummins, Mercedes, MAN, Volvo, and more.

In-House Precision Machining

Unlike shops that outsource machining work, we do everything in-house — faster turnaround, full quality control, no communication gaps.

Quality Replacement Components

We source only OEM-grade or premium aftermarket parts — every component comes with full traceability and quality documentation.

Fast Turnaround, Reduced Downtime

In-house machining means quicker rebuilds — most standard overhauls completed within 5–10 working days.

Nationwide Support Available

For large fleets or site-based equipment, we can mobilise to your location — reducing transport risk for sensitive engine components.

Engine Rebuilding — By The Numbers
500+Engines Rebuilt
20+Years Experience
15+Engine Brands
5–10Day Turnaround
"A proper engine rebuild done right will outlast a cheap one by years. Our process never cuts corners — because your equipment can't afford it."
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Proven Results

Case Studies

All Projects →
Heavy Equipment — Abuja
Caterpillar 320D Excavator Engine Overhaul
Abuja, FCT 8 Working Days
The Problem

A CAT 320D excavator on an active road construction project was losing power severely, burning excessive oil, and producing black smoke. Compression test revealed all six cylinders at below 60% of specification.

Our Solution

Complete engine overhaul — full teardown, cylinder boring to +0.5mm oversize, crankshaft regrind, new pistons and liners, full gasket set, bearings and seals. Engine block and head machined in-house.

✓ Engine returned to 100% compression. Machine back in service within 8 working days — avoiding a ₦28M engine replacement cost.

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Commercial Fleet — Lagos
Scania R-Series Fleet Engine Rebuild Programme
Lagos — Apapa 6-Week Programme
The Problem

A logistics company with 18 Scania R-Series long-haul trucks had 12 units showing high oil consumption, reduced power, and rising fuel costs. Fleet could not stop operations simultaneously.

Our Solution

Structured rolling rebuild programme — 2 trucks rebuilt per week on a rotating schedule. In-frame rebuild for good-bore units; full overhaul for worn cylinders. All within our Lagos workshop.

✓ All 12 trucks rebuilt over 6 weeks with zero full fleet downtime. Average fuel consumption improved 18%. Client signed annual fleet maintenance contract.

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Let's Get Your Engine Running Right

Need a Reliable Engine Rebuild?

Whether it's a single excavator engine or an entire commercial fleet — our engineers are ready. Get a fast, accurate quote within 24 hours.

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