Project Description

Porsche 911 Turbo 3.6 Flachbau

Porsche 911 Turbo 3.6 Flachbau - One of the most elusive Porsche models ever built.






16,721 kilometers

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History File

The Porsche 911 Turbo 3.6 Flat-nose, or Flachbau in German, was a special, limited production variant of the Porsche 964 that was only available in 1994. The Turbo 3.6 Flachbau (Performance enhancement) Leistungsteigerung featured a distinctive ‘flat-nose’ front end, and was fitted with Porsche’s M64 engine. This highly tuned, race-derived 3.6L flat six engine developed 283 kW/385 ps and drove the rear wheels through a 5 speed manual gearbox. Numbers are notoriously difficult to come by at Porsche but, three versions of the Turbo 3.6 Flat-nose were built: X83 (Japanese market), X84 (Rest of World), and X85 (US market). As a whole, these series are summarised under the option X88. By the end of production of the Porsche 911 Turbo 3.6 Flachbau, only a total of 76 examples had been built: 10 – X83 examples, 27 – X84 examples, and 39 – X85 examples. It’s no wonder that these cars have gone on to become among the most desirable and elusive classic 911 models on the planet. It’s fairly well documented, on various websites which chassis numbers went where with this particular example: WPOZZZ 96ZRS 470456 initially delivered to a client in Qatar before arriving back in Germany in January 2005 and is just one of the 15 LHD examples built with an X84 Package. It is currently German registered and shows a mere 16,721 kilometers.


The car is finished, in Porsche language, as Tief Schwarz Lack (deep black) code number L741. It’s a solid colour and, with the exception of the bonnet, is still showing its original gleaming factory coat of paint. Without question, the bonnet has encountered the usual stone chips as one does tend to drive these cars at warp factor 7, with the inevitable outcome. It’s now a blemish free surface. The front valance grill, just below the number plate on the driver’s side, has also suffered a couple of stone chips and is depicted below. As with all rear protectors to the rear wheel arches, they too have suffered some surface cracking and are accurately depicted below. This particular model is also blessed with an electric sunroof and coded 650.


Porsche have listed the interior leather specification as code 980 and is simply termed as Buff (Raff-Leder – Sitzbezug). Black leather piping blends well with a high quality beige carpet set. But the dominant aspect is obviously the use of walnut coloured inlays on both the central display dashboard and passenger side; steering wheel, gear-knob and handbrake grip have also been applied. The car was prepared for a radio (code 441) with a subsequent Kenwood Radio/CD Changer system fitted at a later date. The factory fitted (code 573) air conditioning is working strong to accompany the factory (code 650) electric sunroof. Other factory options include: 567 Stronger tinted front screen; driver 434 and passenger 438 electric seats.

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Engine & Transmission

All 76 cars built were equipped with the Performance Enhancement (Leistungssteigerung) engine option, uprated with a larger, single KKK turbocharger with increased boost, a more efficient intercooler, modified cylinder heads with larger ports, increased-capacity fuel injectors, and more radical camshafts with advanced engine timing. This was an air-cooled flat-six unit which delivered 385 ps at 5,750 rpm, 25 ps more than the standard 3.6 Turbo. Power was fed through a G50 five-speed manual transaxle with a ZF-sourced 40 percent locking differential. This particular example, showing just 16,721 kilometers, arrived back in Germany in 2005. It was serviced by Porsche-Zentrum München with 8,783 km’s and received a brake fluid change in June 2008 at 13,676 km’s following use by its current German owner. It is offered with a comprehensive inspection by Porsche specialist Hartman & Köster in Lenkwerk Bielefeld.

Wheels, Tyres & Brakes

Michelin rubber adorn the stunning light alloy polished wheels, with 265/35 ZR 18 tyres securing the rear, and smaller 225/40 ZR 18 guiding the front. The car is also offered with new tyres as the current set appear to be the original 1994 rubber. The rear passenger side 18” alloy does show some scuffing and is depicted below. The brakes received new brake fluid at 8783 kilometers and are working fine and pull the car up straight.

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