Porsche 924: A Classic Reimagined

The Porsche 924 stands as a unique chapter in the Stuttgart marque's storied history. Often overshadowed by its more potent siblings, the 924 carved out its own niche, offering a different, yet equally compelling, Porsche ownership experience. From its Audi-derived beginnings to the more potent Turbo and the later, refined 924S, this front-engined, rear-wheel-drive coupé has garnered a dedicated following. This article delves into the heart of the 924, exploring its powerplant, the availability and reliability of its parts, its evolution through the model years, and what potential owners should consider when seeking one of these increasingly sought-after classics.

The Heart of the 924: Engine Evolution

The Porsche 924's journey began with an engine that, while not born of Zuffenhausen, provided a solid foundation for this new direction for Porsche. The initial models, from the 1976 model year onwards, were powered by a 2-litre, liquid-cooled, inline-four cylinder engine. This unit, with its overhead camshaft and 125bhp output, was sourced from Audi, a common practice for Porsche during this period to leverage existing, reliable components. This engine, while perhaps not setting the world alight with blistering performance, was renowned for its mild-mannered character and, crucially, its reliability, especially when properly maintained.

The introduction of the 924 Turbo in the 1979 model year marked a significant performance upgrade. This variant boasted a more potent 170bhp, thanks to the addition of a single turbocharger. This iteration transformed the 924 into a much quicker machine, capable of challenging more established performance cars of the era. However, this increased performance came with its own set of considerations, including the characteristic turbo 'throttle lag' of the period and the need for careful maintenance to ensure the longevity of the turbocharger itself. The 'Series 2' 924 Turbo, introduced in the 1981 model year, saw a power increase to 177bhp, benefiting from Digital Motor Electronics (DME) ignition and improved turbo oil recirculation, making it a more refined and robust performance option.

Perhaps the most significant mechanical evolution came with the 924S, introduced for the 1987 model year. This model saw the 924 body shell adopt the more powerful 2.5-litre, all-alloy M44 engine derived from the 944. Initially producing 150bhp and later uprated to 160bhp for the 1988 model year, this engine offered a substantial improvement in power delivery and overall driving experience. The M44 engine is celebrated for its smoothness and torque, providing a more effortless and engaging drive compared to the earlier 2.0-litre unit. This integration of the 944's driveline and engine into the more svelte 924 body proved to be a winning combination, making the 924S a highly desirable model for many.

Parts and Reliability: Keeping Your 924 on the Road

For owners of Porsche 924 models, sourcing reliable parts is paramount to maintaining these classic cars. Thankfully, the availability of parts and accessories for the 924, while perhaps not as extensive as for the 911, is generally good, particularly from specialist suppliers. Companies like Heritage Parts Centre have dedicated themselves to providing high-quality parts for the 924, acknowledging its important place in Porsche's heritage. Whether you need routine engine service components, body repair panels, or more obscure fittings, specialist suppliers can often fulfil these requirements.

The reliability of the 924, particularly the earlier 2.0-litre models, is generally considered good, provided the car has been well-maintained. The Audi-sourced engine has a solid reputation, but like any vehicle of this age, wear and tear are inevitable. Key areas to consider during routine maintenance include regular oil and filter changes, brake fluid renewal, and timely replacement of the cam belt, which typically needs attention every 30-40,000 miles or four years. Spark plug replacement can be a little more involved due to their location on the engine, requiring a special tool.

Common wear items can include valve guides, which, when worn, can lead to blue smoke from the exhaust. A worn camshaft can manifest as a tapping sound from the cam cover. Engine mountings can also degrade over time, leading to increased vibration, but replacement units are available. Clutch life is variable, but a slipping clutch will necessitate a significant repair bill. Brakes on the standard 924 are generally robust, with front discs and pads typically lasting around 25,000 miles, though the 924 Turbo and 924S will wear their brakes more rapidly due to their increased performance.

A unique point of fragility in the 924 Turbo is the turbocharger itself. The absence of a post-shutdown turbo cooling system, unlike in some later Porsche models, means that the oil protecting the turbo can overheat, leading to bearing wear. A well-cared-for turbo might last around 50,000 miles, but replacement can be a substantial expense. Signs of a failing turbo include a trail of blue smoke, particularly at higher RPM.

Model History and Key Developments

The Porsche 924's production run spanned from 1976 to 1988, with significant updates occurring throughout its life. The early models (1976-1980) featured the 2.0-litre engine and offered a 4-speed manual or optional 3-speed automatic gearbox. The 1978 model year saw improvements to the rear suspension, a revised bodyshell with zinc coating for enhanced rust protection, and the availability of a 5-speed manual gearbox with the desirable 'dog-leg' first gear layout.

The 1979 model year introduced the 924 Turbo, while the 1980 model year saw the standard 924 receive a new 5-speed gearbox with a more conventional 'H' pattern, breakerless ignition, and minor styling updates. Limited editions, such as the 'Le Mans' and 'Carrera GT' models, also emerged during this period, showcasing Porsche's commitment to performance variations of the 924.

The 'Series 2' 924 Turbo arrived in 1981 with improved electronics and a 7-year anti-perforation warranty. Subsequent years brought further refinements, including standard rear spoilers from 1983 and electrically tilted sunroofs from 1984. The original 2.0-litre 924 was discontinued in 1985.

The re-emergence of the 924 as the 924S in 1987 was a pivotal moment. This model bridged the gap between the original 924 and the 944, offering the latter's 2.5-litre engine and many of its chassis upgrades in the more compact 924 body. The 924S retained the older interior and dashboard design of the early 924, distinguishing it from the later Series II 944 models which featured a redesigned dashboard and console. The 924S was produced until the model's discontinuation in June 1988.

What to Look For When Buying a Porsche 924

When seeking a Porsche 924, a thorough inspection is crucial. Age-related issues such as corrosion are a primary concern. Pay close attention to the sills, rear suspension mounting points, and the general condition of the bodyshell. The panel gaps on a 924 were relatively large even when new, so look for inconsistencies that might indicate previous accident repairs or poor-quality bodywork. Uneven paint finish and poor panel alignment are also warning signs.

Underneath the car, check for signs of rust, oil leaks, and the condition of brake lines and suspension components. The exhaust system is relatively simple, but check for corrosion, particularly on the middle and rear sections.

When starting the engine, listen for any unusual noises. Ticking or clicking sounds could indicate worn valve gear or camshaft issues. Check for exhaust smoke, which can point to worn valve guides or piston rings. Early 924s should not suffer from hot-start problems, but issues with the K-Jetronic fuel injection system often require specialist diagnosis and repair.

Transmission issues, such as worn propshaft or differential bearings, can manifest as a whining noise during driving. Gear selection problems should also be investigated. Suspension woes might present as clonking noises or front wheel shake, potentially due to worn bushes or droplinks, or simply old tyres. A 'floaty' handling characteristic can indicate worn shock absorbers.

Inspect the interior for wear and tear, which can be exacerbated by leaks from the sunroof or tailgate. Feel the carpets for dampness and check the rear footwells for corrosion. The alloys should be free from damage, and any signs of repair or cracked rims should be viewed with caution.

For 924S models, it is essential to check the condition of the oil and coolant for any signs of head gasket failure. Also, verify the remaining life on the cam and balance shaft belts.

Ultimately, a test drive is invaluable. Even a short drive will reveal many potential issues. If you lack the expertise to conduct a thorough pre-purchase inspection, engaging a specialist to assess the car is highly recommended. They can provide an expert opinion on the car's condition, identify immediate and future repair needs, and help you determine if the asking price is fair.

Frequently Asked Questions

What engine did the early Porsche 924 use?
Early Porsche 924 models, from the 1976 model year onwards, used a 2.0-litre, inline-four cylinder engine of Audi heritage.

Is the Porsche 924 a reliable car?
When properly maintained, the Porsche 924 is generally considered a reliable car. However, like any vehicle of its age, it can be susceptible to wear and tear on various components.

What are the main differences between a 924 and a 924S?
The primary difference is the engine. The 924S features the larger, more powerful 2.5-litre M44 engine from the 944, whereas earlier 924 models used a 2.0-litre Audi-derived engine. The 924S also benefited from some of the 944's chassis and brake upgrades.

Can I put a 944 engine into an early 924?
While technically possible with significant engineering effort and cost, it is generally not a straightforward 'bolt-in' swap due to differences in the front crossmember, engine mounts, and other supporting structures.

Where can I buy Porsche 924 parts?
Specialist suppliers, such as Heritage Parts Centre, are good sources for Porsche 924 parts, including engine components, body panels, and various fittings.

The Porsche 924, in its various forms, represents an accessible entry point into Porsche ownership. Its blend of design, engineering, and the inherent appeal of the Porsche badge ensures its continued relevance among classic car enthusiasts. With careful selection and diligent maintenance, a Porsche 924 can provide many years of enjoyable driving.