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Engine Rebuilds and Replacement in South Wales

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Replacement engines and selected in-house rebuilds

At our Llandow Tuning workshop in South Wales, we deal with everything from straightforward engine swaps to full custom engine builds. Whether your existing engine has failed or you’re planning an upgrade, we can advise on the most sensible and cost-effective route.

We can supply and fit replacement engines for many vehicles from leading engine rebuild centres and trusted suppliers.

We can also rebuild engines in-house, although this is limited to certain engine types and applications. Each enquiry is assessed on a case-by-case basis, taking into account parts availability, machining needs, and the intended use of the vehicle.

Where we rebuild an engine, we use high-quality parts and components to ensure reliability and performance. Assembly typically takes place in-house, and we work with specialist machine shops and other industry leaders for any required machining services such as boring, honing, crank grinding, balancing, or head work.

Engine Rebuilds Wales

Rebuild or replace the engine?

The right route depends on what has failed, the condition of the original engine, the availability of a suitable replacement and your plans for the vehicle. A rebuild can also involve external machining, while a replacement needs the correct specification and compatible supporting components.

If the cause of the problem is still uncertain, start with engine diagnostics or a fault assessment. A warning light or loss of performance alone does not establish that a full rebuild is needed.

Information needed to plan the work

Send the registration, engine code, mileage, symptoms and any diagnostic or strip-down reports. For a performance project, include the current hardware, intended use and power target. Tell us whether you are supplying an engine or parts and whether the car is already dismantled.

Access, the extent of damage, parts and machining requirements affect both cost and timing. Some of these can only be established after inspection or dismantling, so discuss the initial assessment and subsequent work as separate stages.

Discuss your engine project

Share the vehicle details, budget priorities and any deadline so that the available workshop options can be considered.

Discuss engine work

How much is it going to cost?

Every engine job is different. The overall cost will depend on the type of engine, parts availability, level of machining required, and how quickly you need the vehicle back. To give you more control, we offer three labour-rate options: Priority, Standard and Economy.

Priority Service

Our Priority Engine Replacement service gives your vehicle a higher workshop priority.

Your car will be placed ahead of routine work wherever possible. We cannot guarantee parts availability or supplier timescales, but we will do our utmost to get your vehicle back to you as quickly as possible.

Where needed, we can use our own drivers to deliver parts to external machine shops to speed up the process (additional charges apply). In many cases it may also be quicker to use a quality reconditioned engine from one of our trusted suppliers — please ask us for details and options.

  • £95 per hour
  • Top workshop priority
  • Fixed price options available on some jobs
  • 50% deposit payable in advance

Standard Service

Our most common choice, offering excellent value. Your vehicle is scheduled as part of our regular workflow with the same attention to detail and quality we apply to all jobs.

If we have to wait for a part, the work will be paused and then resumed once the required items arrive and current jobs are completed. This option suits most customers who want a sensible balance between cost and speed.

  • £75 per hour
  • Standard workshop priority
  • Flexible scheduling
  • Ideal for daily drivers and general repairs

Economy Service

Our most cost-effective option — perfect if you’re not in a rush and want the same high-quality workmanship at a lower hourly rate.

Timescales for this service can range from 6 months to over a year, depending on workload, project type, third-party machining, and parts availability. Economy jobs are fitted in around our regular schedule, so they cannot be treated as urgent.

If you have a "dream project" and want to keep costs down, this can be an ideal option, but please remember it operates strictly on an as-and-when basis and is not suitable if you need the car back quickly.

If you have any questions or would like to discuss whether the Economy Service is right for you, please contact us.

We can reduce labour costs by working on your vehicle during quieter periods. Economy jobs are scheduled around higher-priority and urgent work.

  • £55 per hour
  • As-and-when workshop priority
  • Lowest overall cost
  • Subject to availability

What sort of upgrades can we do?

At Llandow Tuning, we can carry out a wide range of engine upgrades aimed at improving performance, reliability, or both. Typical work can include:

  • Performance camshaft installation and timing setup
  • Upgraded pistons, rods, bearings and fasteners
  • Cylinder head work — valve upgrades, springs, guides and light porting
  • Head gasket and head stud upgrades for higher boost applications
  • Balancing and blueprinting of rotating assemblies
  • Oil system and cooling system improvements where appropriate

Many of these upgrades need to be planned alongside dyno calibration. Discuss the supporting hardware and tuning requirements as part of the build specification.

If you have something specific in mind, just send us a message with your vehicle details and your goals (road, track, drag, etc.) and we’ll be happy to discuss options and pricing.

Engine Upgrades in Wales

Can we build your engine with forged components?

We can discuss a build using forged components for supported engine types. Before committing to this work, consider the costs, timescales and whether it is necessary for your goals.

A properly forged build will usually include forged pistons, stronger connecting rods, upgraded bearings, head studs/bolts, gaskets and often additional machining and balancing. Done properly, this is not a cheap exercise: as a guide, the minimum price for a basic 4-cylinder engine build is typically around £4,000, and larger or more complex engines will cost more.

For many customers, a well-set-up standard or lightly uprated engine with a sensible power level and a good custom tune is a better use of budget. For higher power targets, regular track use or serious long-term projects, a forged build may well be the right answer.

If you’re considering forging your engine, please get in touch with full vehicle details and your intended power/usage targets, and we’ll happily talk you through the realistic options and costs.

Forged Engine in Wales

Warranty

Engine Swaps

When we supply and fit a reconditioned engine, you’ll receive the same warranty that our engine supplier provides. For most road-going or non-performance vehicles, this is typically a 3 or 6-month warranty, depending on the supplier and engine type.

If we supply and fit a used (second-hand) engine, we provide a limited 2-week start-up warranty for road or non-performance vehicles. This covers the engine starting, idling, and running as expected upon installation.

If you choose to supply your own engine, the responsibility for any warranty or failure rests entirely with you or your supplier. We cannot provide any warranty or guarantee on parts not sourced by us.

Engine Rebuilds

For road or non-performance engine rebuilds completed in-house, we provide a 3-month warranty on workmanship only. This means that if a fault is proven to be due to an assembly or workmanship issue, we’ll put it right.

The warranty does not cover any damage or failure resulting from:

  • Misuse, neglect, or over-revving
  • Incorrect installation or tuning by third parties
  • Use of poor-quality or contaminated oil or fuel
  • Cooling or lubrication issues external to the engine
  • Modifications or mapping changes made after the rebuild without our approval

For fast road, track, or motorsport applications, warranty coverage may be reduced or excluded entirely due to the nature of use and higher risk of component stress. We will always discuss this openly before work begins, so you know exactly where you stand.

If you supply any of the rebuild parts yourself, the warranty only covers workmanship and assembly issues. If we fit something wrong, we'll happily fix it but not the part itself.

Please contact us before committing to any rebuild for a full explanation of warranty terms specific to your engine and its intended purpose.

Engine Warranty and Rebuilds Wales