SDV6 Timing Chain Trouble? We Rebuild Discovery 4 Engines
Chain rattle, turbo whine or injector knock — our engineers rebuild 3.0 SDV6 engines to a stronger-than-factory standard, supplied and fitted from Grays, Essex.
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VERIFIED FEEDBACK
What Land Rover Discovery 4 Owners Say About Our Engine Work
Real reviews from Land Rover Discovery 4 owners whose engines we have rebuilt, repaired or replaced at our Grays workshop.
“A metallic rattle on cold start turned out to be a badly stretched timing chain. They caught it before the crank suffered, rebuilt the top end with the updated chain kit, and the engine is silent now.”
David P.
Discovery 4 SDV6
“Total crankshaft failure at 120k. Rather than a risky used engine, they built me a fully reconditioned SDV6 with documented crank testing. Eighteen months on, it's the best money I've spent on the car.”
Fiona A.
Discovery 4 HSE
“My LR4 lost power and smoked under load — turbo failure feeding debris into the intake. They replaced the turbos, flushed everything, and rebuilt the engine properly. Honest, methodical, and superb value.”
Gareth O.
LR4 3.0 diesel
DETAIL OVERVIEW
Inside The 3.0 SDV6 Diesel
The Discovery 4's 3.0-litre SDV6 answered nearly every criticism of the earlier 2.7 — more torque, better refinement and a far stronger oil pump. Yet it introduced weaknesses of its own, and the most serious is timing chain wear. The rear-mounted chain stretches with age, and because it sits against the bulkhead, replacement is engine-out work.
A stretched chain announces itself quietly: a rattle for a few seconds on cold start, a slightly rougher idle, perhaps a correlation fault stored in the ECU. Left alone, it can jump teeth or snap, wrecking valves and pistons in an instant. The SDV6 also suffers turbo bearing wear, injector faults and — on unlucky examples — sudden crankshaft failure.
We rebuild these engines with all of that history in mind. Every SDV6 rebuild includes the latest-specification chain kit, crack and hardness testing of the crankshaft, measured bearing clearances and inspected turbochargers. It's the difference between an engine that merely runs and one you can trust for the next hundred thousand miles.
Land Rover Discovery 4 Engine Codes to Help You Find Your Vehicle
| Make | Model | Engine Code | Actual CC | Power KW / HP | Year Range | |
|---|---|---|---|---|---|---|
| Land Rover | Discovery 4 | 3.0 TDV6 | 2993 | 155 kW / 211 hp | 2010–2016 | Get Quote |
| Land Rover | Discovery 4 | 3.0 SDV6 | 2993 | 188 kW / 256 hp | 2011–2016 | Get Quote |
| Land Rover | Discovery 4 | 4.4 V8 Petrol | 4394 | 220 kW / 299 hp | 2009–2013 | Get Quote |
| Land Rover | Discovery 4 | 4.0 / 4.6 V8 (Crossover Models) | 3950 / 4552 | Varies | Crossover Models | Get Quote |
LR4 Engine Solutions
Complete Care For Your Discovery 4
From preventative chain replacement to fully reconditioned exchange engines, all twelve services are delivered from one specialist workshop in Grays, Essex.
LR4 ENGINE SOLUTIONSDISCOVERY 3 OR DISCOVERY 4? THE ENGINES ARE NOT THE SAME
Many owners and even some garages treat the two L319 generations as identical. They aren't. The Discovery 3's 2.7 TDV6 fails through its oil pump and starved crank bearings, while the Discovery 4's 3.0 SDV6 fails through timing chain stretch, turbo wear and occasional crankshaft breakage. Diagnosing one like the other wastes time and money.
That distinction shapes everything we do. A 2.7 rebuild prioritises the uprated oil pump; a 3.0 rebuild prioritises the revised chain kit and crank verification. Because our workshop handles both platforms daily, your Discovery gets the correct preventative work for its actual engine — not a generic checklist borrowed from the wrong generation.
RECONDITIONED SDV6 ENGINES READY WHEN YOURS ISN'T
Timing chain and crankshaft failures rarely give notice, and a stranded Discovery 4 disrupts family life and work alike. Our rolling stock of reconditioned 3.0 SDV6 engines exists for exactly that moment — each unit rebuilt with the updated chain kit, tested crank and refurbished ancillaries before it ever reaches the shelf.
Local owners across Essex, London and the Home Counties choose supply-and-fit at our Grays workshop, typically back on the road within days rather than weeks. Trade customers and distant owners order crated engines with build sheets, torque records and warranty certificates included. Either way, you know exactly what's going into your vehicle.
SDV6 RECONDITIONED ENGINESCOMMON ENGINE QUESTIONS
Straight Answers, No Jargon
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VISIT OUR WORKSHOP
One workshop, easy to reach from the A13, M25, and Dartford Crossing.
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]