Land Rover Engine Machining
Precision cylinder boring, honing, crankshaft grinding, cylinder head resurfacing, and valve work — all performed in-house as part of every Land Rover engine rebuild.
We'll identify your engine and show you relevant services.
What Land Rover Engine Machining Involves
Engine machining is a precision workshop process that restores critical engine components to factory tolerances. As part of every full engine rebuild we carry out, our in-house machine shop performs the following operations:
- Cylinder Boring & Honing — worn bores are bored to an oversize and honed to a cross-hatch finish for optimal oil retention and piston seal.
- Crankshaft Grinding & Polishing — main and big-end journals are ground undersize and polished to restore smooth running surfaces.
- Cylinder Head Resurfacing — the head face is machined flat to ensure a perfect seal with the block.
- Valve Guide & Seat Work — guides are replaced and seats recut for proper valve sealing.
- Pressure Testing & Crack Detection — blocks and heads are tested for integrity before reassembly.
All machining is performed to manufacturer specifications using precision measuring equipment and industry-standard tolerances. The work is carried out on-site in our dedicated machine shop, not outsourced.
Starting Price
Machining is included as standard in every engine rebuild we undertake. Rebuild prices start from:
- 4‑cylinder diesel (classic / Ingenium) — £1,900 – £2,200
- 4‑cylinder petrol (Ingenium) — £2,200
- 6‑cylinder diesel (TDV6/SDV6/Ingenium I6) — £2,400 – £3,200
- V8 (naturally aspirated) — £4,500
- V8 supercharged (AJ133, SVR) — £5,500
- V8 twin-turbo (Octa) — £6,500
Prices are inclusive of all machining, parts, and labour. Pricing disclaimer
Gallery — Land Rover Engine Machining
Applicable Models & Engine Families
Our machining services cover all Land Rover engines that we rebuild. The following models and engine families regularly undergo precision machining in our workshop:
Key engine families we machine:
- TDV6 / SDV6 (M57D30) — Discovery 3/4, Range Rover, Range Rover Sport
- Ingenium AJ200D — 4‑cylinder diesel (Discovery Sport, Evoque, Velar, etc.)
- Ingenium AJ300D — 6‑cylinder diesel (Defender, Discovery 5, etc.)
- AJ133 Supercharged V8 — Range Rover Sport SVR, Velar SVAutobiography
- Td5 — classic Defender & Discovery
- S68 (BMW‑sourced V8) — Defender Octa
We also machine classic engines including the 300Tdi, 200Tdi, and Rover K‑Series.
See our dedicated variant pages for detailed engine information:
Our Machining Process
Inspection & Measurement
Every component is inspected and measured for wear, ovality, taper, and surface condition to determine the required machining.
Cylinder Boring
Worn bores are bored to an oversize dimension on our precision boring machine, matching the new oversize pistons.
Cylinder Honing
The bores are honed to final size with a cross‑hatch pattern for oil retention, verified with bore gauges.
Crankshaft Grinding & Polishing
Main and big‑end journals are ground undersize and polished to restore smooth surfaces, with new bearings sized accordingly.
Cylinder Head Resurfacing
The cylinder head face is machined flat to ensure a perfect seal with the block.
Valve Guide & Seat Work
Guides are replaced, seats recut, and valves refaced and lapped for proper sealing.
Cleaning & Pressure Testing
All components are ultrasonically cleaned, then pressure‑tested and crack‑detected to ensure integrity.
Final Quality Control
Every machined part is measured against specifications before being released for assembly.
Check Your Engine
We'll tell you which engine you have and whether machining is recommended.
Why Choose Us for Engine Machining
- In‑house machine shop — all work is carried out on our premises by experienced machinists, not outsourced.
- Land Rover specialist equipment — we use tooling and fixtures specific to Land Rover engine families.
- Precision measurement — every operation is verified with bore gauges, micrometres, and dial test indicators.
- Full rebuild integration — machining is seamlessly integrated into our comprehensive engine rebuild service.
- 12‑month unlimited‑mileage warranty — all rebuilds, including machining, are covered.
- Read more about our workshop and see why Land Rover owners trust us.
Recent Machining Projects
How It Works
Contact us with your vehicle details or use the registration lookup above.
→We’ll diagnose the issue and provide a fixed‑price quote for the rebuild, including all machining.
→We recover your vehicle (nationwide service available) or you bring it to our workshop.
→We carry out the full rebuild, including all machining, with a typical turnaround of 3‑5 working days.
→Your vehicle is road‑tested and returned to you with a 12‑month warranty.
Get a quote or contact us to discuss your Land Rover engine machining needs.
Related Services
- Land Rover Engine Rebuild — complete rebuilds including full machining.
- Our Engine Rebuild Process — step‑by‑step overview.
- Cylinder Head Repair & Rebuild — specialised head work.
- Engine Inspection & Assessment — diagnostics and evaluation.
- Diesel Timing Chain Repair — for TDV6/SDV6 and Ingenium engines.
Read our blog: Inside our machine shop: boring, honing and grinding explained and What we check on every rebuild, every time.
Frequently Asked Questions
Do you machine all Land Rover engine types?
Yes. We machine cast‑iron and aluminium blocks across all Land Rover engine families, including classic Tdi/Td5, TDV6/SDV6, Ingenium diesel and petrol, AJ133 supercharged V8, and BMW‑sourced V8s.
Is machining included in the quoted rebuild price?
Yes. All machining operations (boring, honing, grinding, resurfacing, valve work, and pressure testing) are included as standard in our fixed‑price rebuild quotes. There are no hidden extras for machining.
How long does the machining process take?
Machining is integrated into our 3‑5 working day rebuild turnaround. The machining itself typically takes 1‑2 days, depending on the extent of work required.
Do you use new parts after machining?
Yes. We fit new oversize pistons and rings, undersize bearings, valve guides, and seals as needed. All parts are sourced from reputable suppliers and meet manufacturer specifications.
Can you machine an engine that has already been rebuilt elsewhere?
Yes, provided the engine is still serviceable. We assess the condition and can re‑machine components if they are within tolerance limits. Contact us for an inspection.