Allen's Classic Engines

Allen's Classic EnginesAllen's Classic EnginesAllen's Classic Engines
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Allen's Classic Engines

Allen's Classic EnginesAllen's Classic EnginesAllen's Classic Engines
Home
Our Services
For Sale
Gallery
Contact Us
About Us
More
  • Home
  • Our Services
  • For Sale
  • Gallery
  • Contact Us
  • About Us
  • Home
  • Our Services
  • For Sale
  • Gallery
  • Contact Us
  • About Us

our services

Rebuilds

Our Specialist Engineering Services

Our Specialist Engineering Services

  

Engine & Gearbox Rebuilds for Mini 1275GT, Cooper, and 1293cc specifications.

• Complete Powertrain: Engine and gearbox rebuilt as a single synchronized unit for perfect drop-gear and idler alignment.

• Block & Bottom End: Chemically cleaned, crack-tested, and precision bored to suit Omega pistons.

• Crankshaft: Journals reground and polis

  

Engine & Gearbox Rebuilds for Mini 1275GT, Cooper, and 1293cc specifications.

• Complete Powertrain: Engine and gearbox rebuilt as a single synchronized unit for perfect drop-gear and idler alignment.

• Block & Bottom End: Chemically cleaned, crack-tested, and precision bored to suit Omega pistons.

• Crankshaft: Journals reground and polished with matched high-quality shells.

• Cylinder Head: Multi-angle valve seat cutting and hardened unleaded conversions.

• Transmission: Full A-plus gearbox strip-down with new baulk rings, bearings, and heavy-duty differential upgrades.



Land Rover 2.25: The 4-Cylinder Specialist

The ultimate reliability upgrade for Series III and Early Defender.

• Bottom End Engineering: We maximize the inherent strength of the webbed block to provide a "bulletproof" engine for work or restoration.

• Precision Alignment: Critical focus on bearing saddle alignment to ensure the crankshaft rotates with zero binding.

• Unleaded Conversion: Cylinder head machining and fitting of hardened valve seats for modern fuel compatibility.

• Oil-Tight Sealing: Specialist attention to the rear crankshaft seal to ensure a reliable, leak-free finish.

• Built for Torque: Expertly assembled for maximum low-end power, ideal for towing and off-road use.



Triumph TR4: The Wet-Liner Specialist

High-precision rebuilds for TR4 and TR4A models.

• Liner Integrity: Meticulous "wet-liner" protrusion setting to ensure perfect head gasket sealing and long-term reliability.

• Block Preparation: Full chemical cleaning and crack testing of the casting before machining begins.

• Cylinder Head: Multi-angle valve seat cutting and hardened seats fitted for unleaded fuel.

• Dynamic Balancing: Full rotating assembly balancing to remove traditional four-cylinder harshness.

• Bespoke Road Specs: Tailored builds ranging from standard factory original to enhanced fast-road performance.

Our Specialist Engineering Services

Our Specialist Engineering Services

Our Specialist Engineering Services

 

• Specialist Assembly: Expert setup for Mini A-Series, Land Rover 5-main bearing, and Triumph TR wet-liner engines.


• Full Engine Reconditioning: Complete strip-down, chemical cleaning, and crack testing for all  units.


• Gearbox & Transmission: Full strip-down and rebuild, replacing all baulk rings, bearings, and any worn or broken compon

 

• Specialist Assembly: Expert setup for Mini A-Series, Land Rover 5-main bearing, and Triumph TR wet-liner engines.


• Full Engine Reconditioning: Complete strip-down, chemical cleaning, and crack testing for all  units.


• Gearbox & Transmission: Full strip-down and rebuild, replacing all baulk rings, bearings, and any worn or broken components.


• In-House Machining: Precision reboring and honing to exact tolerances.


• Unleaded Conversions: Cylinder head machining and fitting of hardened valve seats for modern fuel compatibility.



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Allen's Classic Engines

Northampton, UK

07824533730

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