Anyone thinking about optimizing their 996 will inevitably come across the heart of the matter: the engine.

But this is exactly where what Werk 96 understands as the perfect interaction of all components begins – together with our engine specialist TechSpeed.

Because engine performance is never just a question of horsepower. It's about stability, thermal efficiency, longevity, and harmonious coordination with the entire vehicle.

TechSpeed ​​has specialized in water-cooled six-cylinder engines for over 30 years – with a particular focus on the 996 and 997 series. Over the past 15 years, the team has rebuilt, modified, and perfected between 60 and 70 engines annually. This results in experience gained from over 1,000 engines, which flows directly into every Werk 96 project.

A central topic during overhaul and optimization is the cooling system. The first water-cooled engines—whether the 996 or the early 997—feature thermally sensitive Lokasil cylinder coatings. If the engine gets too hot in everyday use, especially in city traffic (over 100°C), the nickel-silicon coating can dissolve, leading to piston seizure over the long term. Therefore, Werk 96 relies on so-called wet steel liners for its performance conversions, which are directly immersed in water. This solution is not only extremely temperature-resistant but has proven to be an ideal solution over the long term.

The intermediate shaft bearing (IMS) is also crucial. Instead of the original ball bearing, which is prone to localized overloading, Werk 96 uses modern spherical roller bearings. These can withstand many times the load and are not prone to self-destruction. This modification significantly increases long-term stability – as do reinforced pistons with a modern Graphal coating, which is applied under vacuum. This significantly reduces friction and increases the service life of the engine.

During every conversion or overhaul, all relevant wear parts are replaced: timing chains, chain tensioners, bearing shells, valve guides, and much more. In addition, each engine block undergoes extensive redesign – with a focus on optimized oil passages, precision-machined cylinder heads, and aerodynamic reworking of the intake and exhaust ports. The following applies: The intake port requires a defined roughness to optimally guide the mixture. Smooth surfaces would be counterproductive here.

Depending on the configuration, our engines reach speeds of up to 8,000 rpm. The 4.0-liter produces approximately 420 hp, while the 4.3-liter produces approximately 450 hp. Targeted modifications to the combustion chamber—such as reducing squish bands and optimizing valve guides—can reduce thermal stress while simultaneously achieving greater performance.

We're also thinking ahead when it comes to peripherals: The installation of a larger center cooler, reprogramming of the control unit to activate the radiator fans earlier (e.g. at 95 °C), the use of a low-temperature thermostat and reinforced water pumps ensure maximum cooling performance - even at high outside temperatures or in city traffic.

Of course, the conversion also includes a tuned sports exhaust system, steel-braided brake lines, an upgraded brake system, and—depending on your preference—a reconditioned or reinforced transmission. Because, as always, the perfect symbiosis of all components is what defines a true Werk 96 conversion.

And for anyone driving a 996.1 with the 3.4-liter engine: There's a known design flaw here. Porsche didn't install a locking mechanism for the bearing shells in the center main bearing. In the worst case, the bearing shell can shift under load—leading to serious engine damage. Factory 96 corrects this problem as standard with every overhaul through targeted reworking.

Conclusion:

An engine conversion at Werk 96 is never just a horsepower upgrade. It's a holistic concept combining expertise, experience, passion, and the deep conviction that the 996 deserves the best—both technically and emotionally, with a focus on maximum quality and longevity.

Another important issue is the catalytic converter. Vehicles have now reached a certain age and accumulated corresponding mileage, at which material fatigue is completely normal. Many standard catalytic converters begin to degrade over time – particularly due to the intense thermal stress. The first warning sign can be a metallic rattling sound when tapped with a rubber mallet – often an indication that the ceramic inner workings are already beginning to detach. The problem: These dislodged particles have only one path – back to the engine.

Particularly during long downhill drives with overrun cutoff, negative pressure builds up in the exhaust system. This can suck particles from the damaged catalytic converter back into the combustion chamber. This not only leads to rough engine running, but in the worst case, to serious engine damage. Therefore, our clear advice: The catalytic converter should be checked regularly – both visually and by tapping it. The catalytic converter mounts should also be kept in mind, as they can also loosen or wear out over time. The exhaust system – often underestimated, but in the 996 911 Carrera model, it is absolutely central to performance, efficiency, and sound. Especially with engine conversions like our 4.0- or 4.3-liter engine, the standard exhaust system is a real bottleneck – not only because it is not designed for these power ranges, but because it literally destroys power.

A key point is the pipe diameter: While standard systems operate at approximately 50 mm, we use a minimum pipe diameter of 63.5 mm for our 4.0 and 4.3 liter power kits. Why? Because a larger pipe cross-section means less exhaust backpressure, which in turn ensures more power and freer engine development.

But it's not just about size. Our sports exhaust system systematically combines all six cylinder lines – this not only creates an incomparably sporty sound, but also improves the engine's torque characteristics in the lower and mid-range rev range thanks to the so-called separation torque. The streamlined routing and the targeted blending of the exhaust gases – all this results in more dynamics, more efficiency, and more emotion.

Standard rear mufflers work with chambers. The exhaust flow is swirled, redirected, calmed—but also slowed down. Our sport rear mufflers, on the other hand, are equipped with continuous, perforated screen tubes. The length of these tubes dampens the sound, but the exhaust flow remains aerodynamically efficient. The result: more power, less exhaust backpressure, a rich sound—and no annoying drone in the interior.

In short: Anyone who invests in a high-performance engine like our 4.0 or 4.3 must also consider the exhaust system. This is the only way to unlock the engine's full potential. Anything else would be a waste of performance. That's why we recommend always planning the exhaust system and engine conversion together – for maximum performance, supreme driving pleasure, and a truly thrilling experience.

Transmission in the 996 – our experience, your advantage

The manual transmission of the 911 Carrera Model 996 is a small masterpiece – precise, direct, and mechanical. However, after 20 to 30 years of service, typical signs of wear and tear begin to appear in many vehicles. This is precisely where our specialization comes in: At Werk 96, we don't just know how to repair a transmission – we know how to make it better.

The most common problems

Over the years, thermal stress, gear shifting under load, and high mileage accumulate. The result is usually:

• A clunky or scratchy 2nd gear
• Worn synchronizer rings – especially in 1st and 2nd gear
• Worn sliding sleeves and shift bodies
• Running noise due to pitting on the main bearings
• Burnt or neglected transmission oil

These problems are known – and we know each of their causes in detail.

Our solution: specialist knowledge, tools, quality

At Plant 96, we overhaul over 70 transmissions annually—each with the utmost precision. Our specialized tools allow us to disassemble and assemble bearings and gears stress-free—precisely according to manufacturer specifications, without thermal overload or damage. This sets us apart from many independent workshops—and even from some official bodies.

We use only high-quality components – such as FAG bearings, not cheap imports – and test every component for dimensional accuracy, smooth running, and proper function. We also replace the often overlooked main bearings on the gearbox head as standard – because we know how important they are for smooth running and longevity.

More than repairs: sensible upgrades

On request, we can customize your transmission – for more driving pleasure and optimal drivability:

• Shorter axle ratios (e.g. 8:32 / KGT = short bevel gear) ensure significantly more dynamics and noticeably stronger pulling power – ideal for sporty country roads or mountain pass rides.
• Longer 6th gear for relaxed motorway driving
• High-quality limited-slip differentials with smooth, homogeneous characteristics
• Suitable oil (e.g. EMK 75W140) for extreme loads

Why a transmission oil change is so crucial

Overlooked in everyday use, but immensely important: transmission oil. Especially in competitive driving, it reaches temperatures above 120°C. Burnt oil can damage components—which is why we recommend changing it every 60,000 km. Many customers report significantly improved shifting performance after just the first change.

Especially for 996.1 drivers, we offer a proven upgrade to the technology level of the 996.2: During the overhaul, the main shaft is replaced with the counterpart of the 996.2 – for significantly more stability, higher load capacity, better power transmission and a longer service life of the entire drivetrain.

Plant 96 stands for transmission expertise with substance.

Because we don’t just know the 996 model – we live it.

The perfect base: Original 18-inch Carrera rims

For us at Werk 96, it's clear: When it comes to the optimal combination of performance, weight, and originality, there's hardly a better choice than the original 18-inch Carrera rims. We prefer the 8 x 18-inch dimensions on the front axle and 10 x 18-inch on the rear axle – not only because of their classic appearance, but above all because of their technical properties.

What many people don't know: These rims were among the lightest in their class for their time. The 8-inch version weighs a mere 9.2 kg, and the 10-inch version on the rear axle weighs just 10.2 kg. This is a decisive advantage, because as part of the unsprung mass, rims directly affect handling – the lighter they are, the more agile the car.

We also follow a clear concept when it comes to tire selection. The optimal tires are 225/40 ZR18 at the front and 265/35 ZR18 at the rear – a perfectly coordinated setup for the 911 Carrera 996 model, ideally combining performance, balance, and everyday usability.

This aluminum alloy wheel is our preferred basis for many of our conversions because it combines technical excellence with timeless design.

The perfect tire for your 996

Tires are more than just rubber on wheels. They are the only connection between your 996 and the road – and determine grip, steering precision, braking performance, comfort, and safety. Whether it's wet country roads, hot asphalt, or sharp corners – without the right tires, even the best suspension is useless.

That's why we at Werk 96 place the highest priority on choosing the right tire. We have intensively tested a wide variety of manufacturers, models, and rubber compounds over countless test kilometers and driving cycles – on the road, on mountain roads, and on the track. The result: three models that, for us, represent the perfect tire profile for the 996, depending on its use.

Our Michelin models

1. Michelin Pilot Sport 5 - sporty & suitable for everyday use

2. Michelin Pilot Sport 4S – High-performance and all-rounder

3. Michelin Pilot Sport Cup 2 – uncompromising for the racetrack

Pilot Sport 5

The balanced sports tire for country roads, corners, and highways. It combines excellent wet grip (approx. 4.5/5) with long-lasting grip and ideal performance even at high temperatures. For ambitious drivers seeking maximum performance in everyday driving.

Pilot Sport 4S

The all-rounder for ambitious sporty rides – whether wet or dry. It delivers excellent grip even under lateral forces and ensures a precise ride – perfect for demanding riders.

Pilot Sport Cup 2

The track-day tire with racing characteristics. It impresses with its outstanding stability and direct feedback in dry conditions. In the wet, it delivers a restrained yet confident ride – ideal for ambitious racetrack enthusiasts.

Our conclusion

For us, the Michelin Pilot Sport 5 is the real hero of the tire lineup. It combines outstanding everyday usability with impressive performance and offers incredibly dynamic handling – even with ambitious driving. Added to that is its excellent value for money, making it the ideal choice for most 996 drivers. Whether in the city, on country roads, or on mountain passes – we had the most driving fun and the broadest range of applications with the PS5 in all our tests.

However, for those who prefer a sporty driving style, enjoy winding mountain roads, or require even more direct handling, we recommend the Michelin Pilot Sport 4S. It offers additional performance reserves for particularly committed driving.

And for anyone who goes on track days or is looking for maximum performance on dry roads, the Michelin Pilot Sport Cup 2 is the uncompromising choice.

The benchmark among brake pads

Brake pads are far more than mere wear parts – they are the crucial interface between dynamics and safety. They determine how precisely your 996 decelerates, how much feel you have when braking, and how reliable the brakes remain even under high thermal loads. For ambitious drivers, they are a key element in the overall package – because only with the right pads can you get the full potential out of your braking system.

Our choice: Pagid Street Plus – more control, more performance

After countless kilometers of testing on mountain passes, country roads, and track days, we're certain: The Pagid Street Plus is the ideal solution for anyone seeking noticeably more braking performance – without compromising on everyday performance. It combines the genes of a motorsport rubber with the everyday usability of a production product.

The Pagid Street Plus was specially developed for sporty riders who value precise feedback, high stability, and excellent controllability. Its special pad compound provides an increased coefficient of friction – and this is precisely what makes the difference: less pedal pressure with the same deceleration, more direct response, and a sensitive pedal feel that is particularly beneficial in corners or during load changes.

What does “increased friction coefficient” mean?

The coefficient of friction describes how strongly the brake pad engages with the brake disc—in other words, how efficiently deceleration occurs at a certain pedal pressure. The Pagid Street Plus performs significantly better than the standard pads in this regard, while remaining consistent across a wide temperature range. This means:

• Noticeably faster braking response

• Consistently high deceleration – even during several hard braking maneuvers

• Precise, predictable behavior during sporty driving

• No brake fading, even at higher temperatures

Despite its performance, the Pagid Street Plus is unobtrusive in everyday use: quiet, with low dust generation, and compatible with the original brake system. It also contains low copper (< 0.5%), making it more environmentally friendly than many conventional pads.

Conclusion:

For us at Werk 96, the Pagid Street Plus is the perfect brake pad for the 996. It delivers exactly what you expect from a sporty-tuned vehicle: reliable performance, noticeable control, and a safe, precise pedal feel – while remaining fully suitable for everyday use. For those who want even more and regularly participate in track days, we recommend even higher-performance versions. However, for the majority of sporty 996 models, the Street Plus is the perfect upgrade.

The perfect seat for your 996
A seat is much more than just a place for the driver—it's the center of control, precision, and feedback. Every braking impulse, every turn, every acceleration is transmitted directly to your body and can be felt in the seat.

Sports seats transmit precisely this information: They provide feedback, help you react faster, and better understand your vehicle. They support your body where it needs it—giving you the security and feeling of being completely at one with your 996.

Our recommendation: Two seats. No compromises.
We tested numerous sports seats – on the road, in everyday use, and on the racetrack. Ultimately, two seats emerged that deliver everything that truly matters in the 996: uncompromising performance and genuine everyday usability.

Recaro Pole Position ABE
The absolute purist among sports seats. Lightweight, uncompromising, direct – ideal for those seeking maximum feedback and lateral support. The entry is sporty and narrow, but this is precisely what gives the seat its characteristic shape and performance. Anyone looking to consistently optimize their 996 for dynamics and driving feel will find the perfect counterpart here.

Recaro Cross Sportster CS
The sporty yet comfortable alternative. With a flatter seat bolster for easier entry, yet still with a clear focus on lateral support, ergonomics, and control. The Cross Sportster CS impressively combines sportiness with everyday usability – ideal for anyone who rides their 996 daily but doesn't want to miss out on the true feeling of performance.

Both seats offer:
• Low weight for less mass and better balance
• Option for 3- and 4-point belt systems
• Ergonomic shell shape for direct vehicle contact
• Approval with ABE – can be registered without special approval

For us at Werk 96, one thing is clear: When it comes to seats, there are exactly two models that impress across the board – technically, visually, and in practice. Everything else is just a compromise.

More soon