Land Rover 4.4 Diesel Engine Rebuild Centre for Grays and Essex

Land Rover 4.4 Diesel Engine Rebuild Centre for Grays and Essex

The 448DT V8 deserves specialist hands. We rebuild and replace 4.4 TDV8 and SDV8 engines with the oil pump weakness permanently engineered out.

448DT V8 Specialists
Oil Pump Upgrades Fitted
Written Warranty Included
In-House Machining Partners
Fixed Quotes, No Surprises
Essex Collection Service
Engines Shipped Nationwide
Every Unit Bench-Run Before Despatch
Nationwide Recovery & Return
Twelve Months of Cover
Diesel & Petrol Specialists
Every Unit Bench-Run Before Despatch
Nationwide Recovery & Return
Twelve Months of Cover
Diesel & Petrol Specialists

PROVEN RESULTS

Range Rover Owners Who Trusted Us With Their 4.4 V8, In Their Words

First-hand accounts from TDV8 and SDV8 customers whose engines were diagnosed, rebuilt or replaced at our Grays facility.

★★★★★

“My 2013 Range Rover lost oil pressure without any warning at 82,000 miles. They confirmed the known SDV8 pump failure, rebuilt the bottom end and fitted the updated pump. Eighteen months later it's still faultless.”

A

Andrew C.

Range Rover L405

★★★★★

“Chain rattle on cold start turned out to be worn tensioners. Rather than a quick tensioner swap, they inspected everything, found early bearing wear too, and rebuilt it properly. Honest advice throughout.”

F

Fiona L.

Range Rover Sport SDV8

★★★★★

“As a classic L322 owner I wanted the original TDV8 kept, not swapped. They rebuilt my matching-numbers engine, documented every stage with photographs, and returned it running better than I can ever remember.”

G

George K.

Range Rover L322

Land Rover 4.4L Engine Codes to Help You Find Your Vehicle

MakeModelEngine CodeActual CCPower KW / HPYear Range
Land RoverDiscovery 3448PN4394220 kW / 299 hp2004–2009Get Quote
Land RoverDefender OCTAS68B44T0 / P6354395467 kW / 635 hp2024–PresentGet Quote

THE 4.4 V8'S DOCUMENTED WEAKNESSESSOLVED PERMANENTLY

This engine's failures are so consistent they appear in manufacturer technical bulletins, and our rebuild specification addresses each one directly.

The 2010–2016 Oil Pump Defect

  • SDV8 engines built between 2010 and 2016 are subject to a known oil pump failure, acknowledged in technical bulletins, that starves the V8 of pressure. We fit the revised pump on every rebuild.

Tensioner Wear Behind the Chain Rattle

  • Cold-start rattle on higher-mileage 448DT engines usually signals worn timing chain tensioners. Left alone, chains skip and valves meet pistons, so we renew the complete chain system as standard.

A REBUILD SPECIFICATION WRITTEN FOR THE 448DT

Your V8 is stripped to component level, with block, cranks and heads crack-tested and measured. Reassembly uses new bearings, the updated oil pump, full chain kits, tensioners and gaskets, a specification stronger than the engine left the factory with.

EXCHANGE AND RECONDITIONED 4.4 TDV8 UNITS

If pressure loss has already destroyed the bottom end, a reconditioned 448DT is often the quickest route back to the road. Our exchange engines are fully tested, carry the updated oil pump and revised tensioners, and can be shipped UK-wide as bare units or supplied and fitted at our Grays workshop.

Protect Your V8 Before Failure Strikes

An oil pressure check today costs a fraction of a destroyed bottom end.

engine
4.4 V8 LAND ROVER CARE

How the SDV8 Oil Pump Ends Engines

On affected 2010–2016 builds, the oil pump can fail suddenly and without prior symptoms, the pressure warning illuminates, and by the time the driver pulls over, big-end and main bearings have already run dry.

Because the failure is internal, no service schedule catches it. Many owners only discover the defect when the engine begins knocking.

Our position is simple: any 448DT rebuild or health check should include the revised pump. It is the single most cost-effective insurance this engine can receive, and we treat it as non-negotiable on every job that passes through the workshop.

Craftsmanship Worthy of a Flagship Engine

A Range Rover V8 is not a candidate for shortcuts. Each rebuild is photographed stage by stage, torque values are recorded, and every machined surface is verified against factory specification before assembly begins.

We road-test and pressure-verify each engine on completion, then release it with written warranty documentation and a full build record you can keep with the vehicle's history file.

Alongside V8 rebuilds, our Grays workshop provides diagnostics, timing chain replacement, head gaskets, turbo replacement, DPF work, gearbox and clutch replacement, engine swaps and major servicing for the wider Land Rover range.

engine
4.4 ENGINE RESTORATION

COMMON ENGINE QUESTIONS

Straight Answers, No Jargon

The 448DT powered Land Rover's flagship models only: the Range Rover L322 as the 4.4 TDV8 from 2010, then the L405 Range Rover and L494 Range Rover Sport as the 4.4 SDV8.

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VISIT OUR WORKSHOP

One workshop, easy to reach from the A13, M25, and Dartford Crossing.

RR Engine Works

Specialist Garage

Unit 1 Hedley Ave, Grays, Essex RM20 4EL

Opening Hours

Monday – Friday: 9:00 AM – 6:00 PM

Saturday: 7:00 AM – 2:00 PM

Sunday: Closed

Contact Details

[email protected]
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