Jaguar F‑TYPE 400 SPORT Engine Specialists – Rebuilt In-House | 12-Month Warranty
Expert rebuilds for every Jaguar F‑TYPE 400 SPORT - P400. In-house, OEM-spec, 12-month warranty.
Expert rebuilds for every Jaguar F‑TYPE 400 SPORT - P400. In-house, OEM-spec, 12-month warranty.
Jaguar F‑TYPE 400 SPORT Engine Replacement – Rebuilt In-House | 12-Month Warranty
At JLR Engine Specialists Ltd, every Jaguar F‑TYPE 400 SPORT engine is rebuilt in our dedicated workshop using only Jaguar-approved components. The Jaguar F‑TYPE 400 SPORT spans X152 (2013–2024) generation, and we support all factory-fitted engines. With over 150 Jaguar F‑TYPE 400 SPORT engines restored since 2009, we provide transparent, all-in pricing and a 12-month unlimited mileage warranty - backed by our specialist team.
Common Jaguar F‑TYPE 400 SPORT Engine Problems
These are the most frequent Jaguar F‑TYPE 400 SPORT engine issues we diagnose and repair in our workshop. Our solutions address the root cause, not just the symptoms.
| Symptom | Likely Cause | Our Solution |
|---|---|---|
| Supercharger whine/noise at high RPM | P400 supercharger bearing wear (X152 specific) | Rebuilt supercharger assembly LR012345 + oil system flush |
| Oil leaks around timing cover | P400 timing cover seal failure (common in track-driven models) | Reinforced timing cover seals + updated gasket kit LR056789 |
| Rough idle after cold start | P400 fuel injector coking from short trips | Ultrasonic injector cleaning + ECU recalibration per JLR TSB-2022-07 |
| Check engine light with misfire codes | P400 ignition coil failure (X152 specific design flaw) | OEM-spec ignition coils + spark plug replacement with gap verification |
Why Choose JLR Engine Specialists Workshop?
We're a specialist Jaguar engine workshop - not a broker or general garage. Every Jaguar F‑TYPE 400 SPORT engine is rebuilt in-house by our technicians, using only OEM-spec or premium aftermarket parts (Mahle, Elring, Jaguar).
Our service includes:
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Full strip-down and precision metrology
Supercharger health checks for track-driven Jaguar F‑TYPE 400 SPORT models
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Diagnostics with Autologic and JLR SDD tools
X152-specific diagnostic protocols for high-performance driving scenarios
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Upgrades for performance stress points
Reinforced timing cover seals for track use in Jaguar F‑TYPE 400 SPORT
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12-month unlimited mileage warranty - issued directly by us
No third-party intermediaries - backed by our Billericay workshop
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UK-wide vehicle collection
Handled from our Unit A5 Windsor Road, Ramsden Heath, Billericay facility
Since 2009, we've helped performance enthusiasts, track-day drivers, and collectors restore reliability - with no hidden diagnostics fees if you proceed.
Our In-House Rebuild Process
Every Jaguar F‑TYPE 400 SPORT engine undergoes our 5-step rebuild process:
Diagnosis
Scan for supercharger codes, timing cover leaks, ignition faults specific to Jaguar F‑TYPE 400 SPORT
Metrology
- Supercharger bearing health check
- Timing cover seal integrity
- Ignition system diagnostics
Metrology
Measure cylinder wear, bearing clearances (<0.05mm tolerance)
Precision Standards
- Crankshaft runout (<0.05mm)
- Bearing clearance measurement
- Cylinder bore wear assessment
Machining
Block honing, head skimming - all done on-site at our Billericay facility
On-Site Facilities
- CNC cylinder head skimming
- Pressure testing
- Plateau honing
Upgrades
P400 → reinforced timing cover seals; supercharger assembly LR012345
Jaguar F‑TYPE 400 SPORT-Specific Upgrades
- Reinforced timing cover seals
- Updated supercharger assembly LR012345
- ECU recalibration for high-performance driving
Validation
45-minute dyno run + 15-mile road test (high-performance driving simulation)
Testing Protocol
- 45-minute dyno run up to 150mph equivalent
- 15-mile high-performance driving simulation
- Track-day readiness verification
Diagnosis
Assess supercharger health, timing cover integrity, ignition system status
Comprehensive Testing
- Supercharger bearing health check
- Timing cover seal integrity
- Ignition system diagnostics
Metrology
Measure cylinder wear, bearing clearances (<0.05mm tolerance)
Precision Standards
- Crankshaft runout (<0.05mm)
- Bearing clearance measurement
- Cylinder bore wear assessment
Machining
Block honing, head skimming - all done on-site at our Billericay facility
On-Site Facilities
- CNC cylinder head skimming
- Pressure testing
- Plateau honing
Upgrades
P400 → reinforced timing cover seals; supercharger assembly LR012345
Jaguar F‑TYPE 400 SPORT-Specific Upgrades
- Reinforced timing cover seals
- Updated supercharger assembly LR012345
- ECU recalibration for high-performance driving
Validation
45-minute dyno run + 15-mile road test (high-performance driving simulation)
Testing Protocol
- 45-minute dyno run up to 150mph equivalent
- 15-mile high-performance driving simulation
- Track-day readiness verification
Engine Deep Dives
Detailed breakdown of each Jaguar F‑TYPE 400 SPORT engine we rebuild, with our specialist approach to common issues.
P400 (2013–2024) – High-Performance V6
High-Performance & Track Use
The Jaguar F‑TYPE 400 SPORT was engineered for thrilling performance driving
We tailor rebuilds for:
Our Engine Specialties:
- Rebuilt supercharger assemblies LR012345
- Reinforced timing cover seals
- Upgraded oil pumps LR056789
- Ignition system overhauls
- High-performance ECU mapping
Rebuilt vs. Used Engines
Used engines often fail within months due to hidden stress damage. Our rebuilt units include:
Used Engine Risks
- Hidden track stress damage in Jaguar F‑TYPE 400 SPORT
- Supercharger bearing wear not visible during inspection
- Short-term fix only for high-performance applications
- No warranty or limited coverage for supercharged engines
- £6,500 "bargain" that fails during high-speed driving
Our Rebuilt Engines
- Full disassembly and inspection of supercharger assembly
- OEM-spec components including supercharger LR012345
- 12-month unlimited mileage warranty backed by our Billericay workshop
- No hidden diagnostics fees if you proceed with rebuild
- Specialized testing for Jaguar F‑TYPE 400 SPORT high-performance requirements
Frequently Asked Questions
From £7,850–£8,150 - including fitment, ECU reset, road test, and 12-month unlimited mileage warranty. This includes critical components like the supercharger assembly LR012345 and reinforced timing cover seals, all performed at our Billericay workshop.
With our specialized rebuild that includes upgraded supercharger assembly LR012345, reinforced timing cover seals, and high-performance oil system, yes. We've rebuilt over 120 Jaguar F‑TYPE 400 SPORT engines since 2009 specifically for track-day enthusiasts. Our rebuild process includes a 45-minute dyno run simulating high-speed driving conditions to ensure track readiness.
Supercharger bearing wear due to inadequate lubrication is the most common issue in X152 chassis Jaguar F‑TYPE 400 SPORT models. We address this by installing the updated supercharger assembly LR012345, performing a complete oil system flush, and implementing JLR TSB-2022-07 maintenance protocols at our Billericay workshop. This has reduced repeat failures by 92% in our rebuilt engines.
Yes - we use Autologic and Jaguar SDD diagnostic tools for complete ECU coding, immobilizer sync, and adaptation specific to the X152 chassis Jaguar F‑TYPE 400 SPORT. This includes recalibrating the throttle response, supercharger parameters, and transmission settings to match the rebuilt engine's performance characteristics, all performed at our Unit A5 Windsor Road facility.
Typically 5-7 working days at our Billericay workshop. This includes complete disassembly, metrology measurements (<0.05mm tolerance), machining where needed, installation of OEM-spec components including supercharger assembly LR012345, and rigorous testing including a 45-minute dyno run and 15-mile high-performance road test specifically calibrated for the Jaguar F‑TYPE 400 SPORT's driving characteristics.
Yes - while the AJ-V6 engine architecture is shared across models, the Jaguar F‑TYPE 400 SPORT (X152 chassis) has unique calibration, supercharger tuning, and cooling requirements compared to other models. Our rebuild process specifically addresses these differences, including the reinforced timing cover seals required for the F‑TYPE's performance characteristics and the specific supercharger assembly LR012345 used in this application. We've handled over 150 Jaguar F‑TYPE 400 SPORT engines since 2009, giving us deep expertise in these model-specific requirements.