Exceedingly Rare Porsche 993 Cup 3.8 RSR Available

A 1 of 29 Porsche 993 Cup 3.8 RSR, a rarer, and more beastly 993 Cup 3.8 is offered for sale

The Porsche 993 Cup 3.8 is a highly coveted collector and racing car. However, this 1997 Porsche 993 Cup 3.8 RSR is a significantly rarer beast. With only 29 constructed in 1997 and only 45 total units produced between 1996 and 1998. They were manufactured expressly by the race department at Weissach to help Porsche client teams racing in American IMSA and European and International GT racing, as indicated by the ‘Z’ code in the chassis number, meaning ‘20631 RSR Package Vehicle.’ Customers could pick between three factory-built 3.8-liter engines, each tuned to a particular specification and suited for the suitable racing class, for the 993 Cup 3.8 RSR, which was designed to compete in 24-hour events such as Daytona, Spa, and Le Mans.

The RSR was based on a 993 Carrera 2 chassis with the entire roll cage welded within the body, an aluminum hood, Matter front strut brace, fully ball-jointed suspension, custom front spoiler, and adjustable and rear wing. The RSR also had a driver-adjustable front roll bar, 2-way adjustable Bilstein suspension, bolt-on wheel arches for wider wheels, larger front brakes, and a driver-adjustable front roll bar.

What engine does the 993 Cup 3.8 RSR have?

The uprated 3.8-liter M64/75 engine is exclusive to the RSR. It has more robust and lighter valve gear, high-lift camshafts, redesigned pistons, and cylinder barrels and was extensively rebuilt and intended for endurance racing. Power is channeled through a single-mass flywheel to deliver 350 horsepower at 7,000 rpm to a G50/34 six-speed manual gearbox unique to the RSR.

Porsche Motorsports in Weissach invoiced its first owner on January 29, 1997.  Chassis 98077 was produced on March 7, 1997, with the M64/75 engine tuned explicitly for endurance competition and the optional 100-liter fuel cell and 380mm front brake system. Finally, on March 17, the RSR arrived to its new owner in Japan.

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A Porsche 993 Cup 3.8 RSR untested by competition

The owner intended to race the Porsche in the Zen Nihon GT Senshuken (JGTC) National Championship, but a change in plans relegated the RSR use at Porsche Club of Japan events well as for brisk Sunday drives.

In late 2017, after 20 years of ownership, the car was sold to a British collector.  The new owner opted not to race the RSR but rather register it for road use and maintain it within their possession.  Under the second owner’s care, the RSR was meticulously maintained by the local Porsche Classic Center.

Two years later, after changing hands a third time, the Porsche 3.8 RSR soon departed for its third and current owner in Miami, Florida.  After being registered for the road, it received extensive service at the local Porsche dealership.  The vacuum lines, inner and outer rear CV axle boots, spark plugs, and fuel filter was replaced to prepare it for its maiden drive in the United States. At the same time, the RSR’s engine and transmission were removed, the transmission case resealed, and an oil and filter service was completed at a total cost of $7,268.

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What is involved in preparing a Porsche 993 Cup 3.8 RSR for sale?

The RSR was given a thorough inspection to prepare the vehicle for sale, noting that it had never been in an accident and paint meter readings verified that it still had its factory-applied Glacier White paint. In addition, the correct date codes are stamped on the center-lock magnesium wheels, and the proper Bosch Motronic M2.10 ECU is still in place. Finally, paint code markings on panels, as well as the labels on the Recaro seat and six-point harness, attest to this pristine original condition of this Porsche 993 Cup 3.8 RSR.

The RSR preserves the original engine (62P85717) and close-ratio synchronized gearbox (2002023) as recorded on the official Porsche Letter of Origin, despite having only 4,081miles, all from non-competitive use.

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What is the performance of the Porsche 993 Cup 3.8 RSR?

With its unique pistons and high lift cams, the M64/75 3.8 liters DOHC engine produces 350 horsepower at 6,900 pm, offering a fantastic visceral driving experience. In addition, the RSR’s close-ratio 6-speed transmission is accurate and flawless throughout the power band, allowing it to race from 0-60 mph in 4.2 seconds and reach top speeds of almost 175 mph.

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What is the suspension system in a Porsche 993 Cup 3.8 RSR?

The independent front suspension coil-overs and multi-link fully adjustable rear suspension and the camber are set to a neutral position for smoother travel, making it ideal for open road driving and occasional track days. The high-speed Z-rated Michelin Pilot Sport tires (235 front and 295 rear) are mounted on BBS modular 18-inch center-lock wheels with magnesium centers that are appropriate for a wide range of applications.

The exterior of the RSR reflects its limited use over the years and is thus, in excellent condition with its Firnweiss (Glacier White) paint free of any flaws. The paint meter constantly reads between 4 and 6 mil throughout all panels, doors, hood, and roof, confirming the RSR’s impeccable provenance. The pronounced composite flairs are also in excellent condition.

In closing

This stunningly authentic Porsche 993 Cup 3.8 RSR, one of only 29 constructed by Weissach for 1997, is suitable for competition use, open road enjoyment, or display.  This Porsche 993 Cup 3.8 RSR is currently offered by Canepa Motorsports with complete documentation.

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