Porsche Engine Rebuilding
Our team of highly skilled technicians have been providing Porsche Engine rebuilds in our Workshop for over 30 years.
When it comes to porsche engine rebuilds, our team are second to none. At our workshop in Liverpool, our highly skilled technicians use Porsche approved parts to get your engine back up and running again. Before getting started, we always offer a consultation to ensure that the rebuild is suited to meet your needs. After that, we are ready to go.
Let’s Discuss Your Porsche Project Below!
Porsche Engine Rebuild Cost?
Our porsche engine rebuilding costs typically range from £8,000 to £25,000, depending on the complexity of the work involved and the specific requirements of your vehicle. Here’s a breakdown of our estimated costs for various engine rebuild scenarios:
- Air-cooled top end engine rebuild: £8,000–£10,000.
- Full engine rebuild: Starting from £12,000, with the potential for additional costs if piston/cylinder replacement or other repairs are necessary.
- Porsche 964 or 993 engine rebuild with new Mahle 102mm pistons/cylinders for a 3.8 liter engine, including sport camshafts, running-in, and dyno tune: £25,000.
- Water-cooled 996 or 997 engine rebuild with bore scoring repair and complete engine overhaul: £13,000-£15,000.
Each of our porsche engine rebuilds are bespoke, with customers requiring different specifications for their build. This means that the price of our service can vary from customer to customer. A price quote will take into consideration time of labour, parts and machinery services, removal and refitting of the engine. Labour rate is priced at £89 p/hour and a rebuild.
Do you want a price quote for your engine rebuild project? Fill in the form at the top of the page, and we’ll get back to you!
Common Porsche Engine Faults
Over the decades, we’ve seen almost every issue a Porsche engine can develop. Knowing the signs early can prevent further damage and higher repair costs. Here are the most frequent faults we encounter in our workshop, along with the rebuild solutions we provide:
- IMS Bearing Failure: A well-known weakness in many water-cooled engines (M96/M97). Symptoms include rattling noises or sudden catastrophic failure. Our Solution: During a rebuild, we upgrade the factory bearing with a robust, permanent replacement, eliminating this failure point.
- Bore Scoring: Common in M96/M97 engines, bore scoring presents as excessive oil consumption or knocking sounds. Left untreated, it can cause catastrophic damage. Our Solution: We completely remedy this fault by meticulously preparing the cylinders and fitting new liners to ensure a perfect piston-to-cylinder fit and long-term durability.
- RMS (Rear Main Seal) Leaks: Oil dripping from the back of the engine is a sign of RMS seal failure. While not always critical on its own, it can lead to clutch contamination. Our Solution: We address the root cause of the leak and fit a new seal as a standard part of our comprehensive engine rebuild process.
- Valve Guide Wear: Air-cooled engines (pre-1998) are especially prone to this issue due to high operating temperatures. Symptoms include smoke on startup or reduced performance. Our Solution: A top-end rebuild with fresh valve guides restores factory-fresh performance and eliminates smoke.
- Cooling System Weaknesses: Water-cooled Porsche engines rely on a healthy cooling system. Failed water pumps or blocked coolant passages can lead to severe engine damage. Our Solution: As part of a full rebuild, we overhaul the entire cooling system to ensure it operates flawlessly, preventing future overheating and maintaining engine health.
Why Rebuild your Porsche Engine?
Technical Repairs & Lasting Solutions
Technical issues are inevitable over a vehicle’s lifespan, and Porsches are no exception. Common problems like IMS bearing failure, bore scoring, and worn valve guides can severely impact an engine’s health.
A full rebuild allows us to not only fix the immediate fault but to engineer a lasting solution. For example, our rebuilds address bore scoring by installing modern, durable cylinder liners, preventing the issue from reoccurring.
We can also upgrade weak components, such as the original factory IMS bearing, for enhanced long-term reliability.
Performance Upgrades & Future-Proofing
A rebuild is the perfect opportunity to upgrade and future-proof your vehicle. We can enhance your engine to deliver more power and a more responsive feel. Capacity increases and camshaft swaps are two such upgrades that can lead to significant performance improvements, especially if existing parts are worn.
By rebuilding your engine with a host of modifications, our technicians can reinforce weak areas and squeeze out extra power, ensuring your vehicle is ready for the track or simply a more exhilarating road experience.
Technical Insight — Our Engineering Approach
Our workshop in Liverpool isn’t just staffed by experienced Porsche specialists, it’s equipped with a unique blend of factory-level diagnostic tools and precision machinery that elevates every rebuild from good to exceptional. Here’s a look at the technical foundation of our work:
Advanced Diagnostic Tools
We are proud members of the Porsche Partner Network (PPN), granting us access to dealer-level diagnostic software, including Porsche PIWIS 4. This ensures we can perform full-system diagnostics, service resets, control unit communication, and precision coding with the same authority as a main dealer.
Precision Engineering & Workshop Equipment
We match Porsche’s exacting standards with state-of-the-art workshop hardware. This allows us to perform every critical task in-house, ensuring quality control from start to finish.
Our workshop equipment includes:
- Six Vehicle Lifts
These allow us to safely access every angle of your Porsche’s engine and drivetrain. With full underbody clearance, we can remove engines efficiently and reinstall them with precision, minimising downtime and ensuring accurate refit. - Beissbarth 4-Wheel Alignment Machine
After an engine rebuild or removal, correct suspension geometry is essential. Our Beissbarth system delivers factory-level chassis calibration, guaranteeing that your Porsche handles exactly as Stuttgart intended. - Pro-Cut On-Vehicle Disc Lathe
This machine resurfaces brake discs directly on the car, restoring braking performance during complete engine or restoration projects. It ensures your rebuilt Porsche engine is paired with equally sharp stopping power. - MIG and TIG Welding Facilities
Our in-house welding capability means we can carry out bespoke fabrication and precision structural repairs. This allows us to reinforce weak points or fabricate custom components as part of upgraded rebuilds. - Performance Tyre Fitting Equipment (up to 24″)
Rebuilds often go hand-in-hand with performance upgrades. Our tyre machines handle low-profile and wide performance tyres, ensuring your Porsche is road-ready and balanced after the engine has been rebuilt.
In-House Validation & Performance Tuning
A rebuilt engine is only as good as its final validation. To ensure optimal performance and long-term durability, we have invested in a sophisticated in-house testbed.
This enables us to perform dyno-like tuning for ignition timing, fuel mapping, and basic engine setup, providing a robust factory check on your engine’s performance before it ever leaves our shop. This process allows us to guarantee the performance and reliability of every build.
Why This Matters
- Accuracy & Repeatability: Our hardware ensures clearances, alignments, and calibrations meet Porsche’s own specifications.
- Full-Service Capability: From diagnosis through testing, we handle every technical step on-site, no outsourcing.
- Performance Assurance: Rebuilt engines aren’t just assembled, they’re proven on a dyno or the road for reliability and drive quality.
Why Choose Tech-9 Motorsport?
Tech 9 are Porsche engine rebuild specialists who have been rebuilding all models of Porsche engines for close to 30 Years. Our highly experienced technicians have worked on a comprehensive range of these vehicles, including pre-1998 air-cooled engines and water-cooled systems.
We’re Porsche tuning experts and have upgraded some interesting models over the years, including race and road variants of the GT3 models and 356 models, through to all the air-cooled 911 variants including 964 and 993.
We can offer a full vehicle diagnostic, running you through the entire breadth of your vehicle’s systems, so that you’re completely informed on how your vehicle is running. With this information, we can recommend the best course of action and get to work on your Porsche.
We only use genuine Porsche or Porsche approved parts. Many of our bespoke parts are made by our trusted suppliers for performance enhancement. Con-rods, pistons, valves, cylinder heads, valve train components and cams are just a few of the items we can order for you.
Looking for Porsche Engine Rebuilders near me?
Tech9 offer unparalleled expertise in Porsche engine rebuilds, proudly serving the entire Northwest, including Cheshire, Wirral, and Manchester from our Workshop in Liverpool.
Our skilled technicians are dedicated to restoring your Porsche’s engine to peak performance, using the highest quality parts and meticulous attention to detail.
Whether you need a Porsche 964 engine rebuild in Cheshire, an engine rebuild in Wirral, or even a porsche engine rebuilding in Manchester. Trust us to deliver exceptional service and precision craftsmanship across the North West.
What is our Engine Rebuild Process?
Almost every engine rebuild is different, but our overall process is a good guide to how we work with our customers’ vehicles. In every case, we’ll be sure to keep you informed about the progress and meticulously document the engine rebuild with photographs and tolerance record sheet.
- Step 1 – An initial consultation will determine future use, budget and specification to be achieved.
- Step 2 – We require an initial deposit upon instruction (normally 30%), then depending upon the build, we can take stage payments or balance on completion. There are also finance options available for high budget builds if required.
- Step 3 – If the vehicle is present for the rebuild, we like to carry out the ‘bedding-in’ procedure in-house. This would entail running in oil installed, and we then drive the vehicle 800-1200 miles to ensure optimal performance and the engine has the care and attention for future durability.
- Step 4 – Once the running-in period has elapsed, we would refill the oil, and depending on the model, carry out a valve clearance check and reset.
What Porsche Engine Rebuilds do you Offer?
Top end refresh
This should be considered a partial rebuild, as both crankcase and crankshaft are left together. Minor issues such as oil leaks, valvetrain wear and snapped head studs can be fixed at a relatively small cost. Depending on the model, we can also include bore inspections and piston ring replacements.
Stock Rebuild
Our stock rebuild is a comprehensive rebuild of the engine. We’ll completely strip down the engine and then meticulously assess the condition of all the parts. After cleaning these down, we’ll rebuild your engine with brand new OEM bearings, seals, gaskets, piston rings, chains and belts – giving your Porsche a completely new lease of life.
Upgraded Rebuild
We’ve worked with enough of these vehicles to understand their weak points and where they have room for improvements. Our technicians can completely rebuild your engine with a host of modifications that reinforce weak areas and increase power output. If you’re looking to future-proof your vehicle whilst squeezing it for extra performance, then this is the option for you.
Custom Rebuild
We’re yet to meet a Porsche owner who doesn’t have a dream custom build in their mind. Our specialist mechanics can make those dreams a reality and have years of experience creating bespoke Porsche builds, whether it’s an 8500rpm 2.0 901 race – engine, a 1000bhp 997 Turbo, or increasing your 356’s capacity to 2.1 litres. We can work with you to create an engine that is perfectly tailored to your specifications and requirements!
Previous Porsche Engine Rebuilds
Where to Find Us
Hale Garage, Hale Road, Hale, Liverpool, L24 5RB, United Kingdom
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FAQs
We provide a 12-month warranty on all of our engine rebuilds covering oil-leaks and failures (not including crank or con-rod failures on top-end refreshes).
Get in touch with us using the contact form, or give us a call on 0151 4255 911 to find out more.
The cost to rebuild a Porsche engine varies in price according to the type of rebuild being undertaken, the parts involved and the labour taken to complete the work. For example, once the engine is removed from an air-cooled 911, a top-end rebuild would typically take us 18-21 days to complete, whereas a full build would take closer to 30 days. Just as every Porsche is its own beast, all our rebuilds are individually quoted. Our labour rate ranges from £89 + VAT p/hour.
Tech 9 have spent 30 years working with a full range of these vehicles, from classic Porsche restorations to modern gems. Thanks to this experience we have a unique insight into the issues that sometimes crop up with these vehicles and are always able to provide an effective solution.
We’ve performed complete rebuilds for the most iconic classics, including the Porsche 356A, B, and C/912. We know all the various faults with these older models, including the very common engine case ovality that can be repaired by our engineering partners. Tech 9 have experience performing routine rebuilds to performance-orientated specifications with increased capacity, sport camshaft and performance exhaust.
Our racing background also makes us uniquely suited to work on high-performance vehicles. We’ve rebuilt 901 2.0 race engines with Solex Carburettors for the Peter Auto 2.0L Cup series, 911 MFI engines, RSR 3.0-3.6 and high compression 3.0 SC-based engines with 300+bhp regularly achieved.
Some of the other Porsche models we have worked with include:
Porsche 911, Porsche 356, Porsche Boxster, Porsche 912, Porsche 993, Porsche 912, Porsche 996, Porsche 997, Porsche 964, Porsche 356, Porsche 914, Porsche 944, Porsche Cayenne, Porsche 2.7, Porsche 3.2, Porsche 356, Porsche 911 3.2, Porsche 911, Porsche 911 Turbo, Porsche 914, Porsche 924, Porsche 928, Porsche 944, Porsche 944 S2, Porsche 944 Turbo, Porsche 964, Porsche 968, Porsche 987, Porsche 993, Porsche 996, Porsche 997 3.8, Porsche Boxster, Porsche Boxster S, Porsche Cayenne, Porsche Cayman, Porsche M97, 1983 Porsche 944, 1988 Porsche 911, 1999 Porsche 911, 1999 Porsche Boxster, 2001 Porsche 911, Porsche 911, Porsche 2.5, Porsche 2.7, Porsche 911 2.7, Porsche 911 930 Turbo, Porsche 912, Porsche 928 S4, Porsche 944 2.5, Porsche 964 Turbo, Porsche 986, Porsche 993 Turbo, Porsche 996 3.6, Porsche Boxster 986, Porsche Boxster 987, Porsche Carrera 3.2, Porsche Cayman 3.4, Porsche Cayman, Porsche Cayman S, Porsche 3.8, Porsche 400hp 3.6
We have many bespoke Porsche parts & accessories that have been designed by us with our world-class machining partners, such as connecting rods, pistons, camshafts and bespoke exhaust systems. We can order in components specific to your needs, whether you’re racing on the circuit, rallying or taking part in an endurance event. We also have a large stock of spares to keep these engines on the road. If you’re struggling find a part that is no longer available, chances are that we have it!
We use all the factory specific tools required for rebuilding these Porsche engines, one of our secrets of performance in our builds relates to the digital timing equipment that is used for cam timing. This vital piece of equipment ensures accuracy across the cylinders for optimal efficiency. Balancing combustion chambers for volume matching, and careful attention to Compression Ratio (CR) ensures that a Tech 9 engine delivers the desired performance and reliability.
Generally, most of our engine rebuilds are a six-week process, from removal from the vehicle to re-fitting. There are various factors that can elongate the process, such as the bedding in period and potential rolling road tuning, if there are any upgrades involved. Contact us to find out more about how long your individual case may take.
There are a few things you should look out for, which are common indicators that your engine needs to be repaired or replaced including oil leaks, smoking or rattles on start-up.
However, a lot of clients visit us for engine rebuilds to enhance their driving performance on the road, with higher quality components, or performance-optimised parts.
Signs that suggest a repair only might be sufficient include minor oil leaks, worn gaskets, singular valve guide wear on an air-cooled head, or a failing auxiliary item like the water pump or timing chain tensioner.
However, consider a full or top-end rebuild if you’re experiencing any of the following:
- Unusual noises (knocking, tapping, or rattling) from the engine bay.
- Excessive blue smoke on startup, often linked to valve guide wear or ring seal issues.
- High oil consumption over short mileage, which may indicate internal wear like bore scoring.
- Metallic debris in oil or strainers, a common early sign of IMS or bearing failure.
- Failed oil pressure, overheating, or sudden loss of power, these often point to internal component damage that repairs alone can’t fix.
- If in doubt, we recommend a comprehensive diagnostic assessment first. We’ll examine whether a targeted repair will suffice or if a rebuild offers a better long-term investment.
With a high-quality rebuild using Porsche-approved or equivalent components, proper machining, and thorough setup, a build can easily deliver 100,000+ miles of reliable service, assuming standard maintenance is followed.
Factors that affect longevity include:
- Usage type: Track-driven cars may require more frequent servicing, but our bedding-in and testing processes help mitigate early wear.
- Maintenance: Regular oil and filter changes, along with scheduled inspections, preserve engine health.
- Quality of parts and workmanship: We use OEM or equivalent parts and pair them with precision fitting, dyno testing or road-testing, and final valve clearance checks post-running-in.
All Tech 9 rebuilds include a post-rebuild running-in procedure (800–1,200 miles) and are accompanied by documentation of the work performed, making it easier to track and maintain optimal engine life.