Vehicle Description
1975 Porsche 911 Coupe - 1973 Twin Turbo RSR
• Chassis Number: 9115201063 (US Model '75 911S Coupe)
• Engine Number: 62L20034 (3.8L Twin Plugs with Twin Turbos)
• Transmission Number: 003392 (G50/201 - 6-Speed Manual)
European Collectibles is pleased to present this stunning Twin
Turbo RSR that was built to customer specifications by Patrick
Motorsports located in Phoenix, Arizona. This project began with a
U.S. model 1975 911S that was stripped to bare metal and fitted
with early RSR style steel fenders; front and rear. It was
backdated to "long hood" specification with subtle custom features
such as, a roofline with shaved rain gutters similar to the RUF
Yellowbird, R-style taillights, center-fill hood, 934/935 style
aerodynamic mirrors, and a beautiful "Jabroc" spoiler, which is a
special wood used for F1 cars that protects the fiberglass front
valence. An iconic ducktail spoiler was handcrafted to fit over the
engine's intercooler and features a massive grill for proper
breathing. Once the bodywork was perfected, a one-off color was
designed by a notable designer, and expertly applied to the entire
body shell. Work in the interior began with the installation of a
roll cage to strengthen the body shell for the extra horsepower and
provide additional safety protection for the driver. The roll cage
was wrapped in leather, as were the hardback sport seats, and
nearly every other square inch of the rest of the interior. Wool
carpets were installed, and a unique weave was designed for the
seat inserts, door panels, and other accent areas. All interior
components were cut by hand, and the hides match perfectly. The
wood shift knob is a homage to the 917; the gauges were inspired by
the beauty of the 356, as well as the early 911, and the vent
control panel was restored to match perfectly.
The engine case is a Porsche GT2 engine/core case ($14,500) for
Twin Turbo 3.6L and the displacement has been increased to 3.8L
with twin plugs, MoTeC management ignition system, and twin turbos.
The engine produces in excess of 600HP at the crankshaft. Parts
include 996 GT3 crankshaft ($2,901), Alpha P993 GT-28 TIAL high
flow twin turbos ($5,260), 962 type throttle bodies for twin-turbo
configuration - custom-built ($14,500), solid rocker arm valve
control conversion ($2,360), valve spring & Ti retainer set ($885),
camshaft set 993 GT2 EVO mechanical rocker type ($1,075), oil pump
($1,785), piston & cylinder set 102mm (3.6L-3.8L) 11.4:1 (107mm
Slip-In cylinders), and Porsche 993 RSR Mahle Motorsports ($5,355);
totaling $58,969 for the engine build. When tested on a chassis
dyno, the rear wheels produced 558 bhp with one bar of boost and
gasoline from the pump. The engine is capable of producing much
more power, although not necessary. In addition to it making big
power, it is a thing of beauty with handcrafted stainless-steel
headers and an installation so sanitary and well-planned, it looks
like as if it were done at the Porsche factory. To put this kind of
power on the street, where it will eventually be caught in traffic,
cooling became a significant concern. To solve this potential
problem, multiple oil coolers and electronic fans can be found in
various nooks and crannies throughout the body shell. Additionally,
careful attention was paid to all engine and gearbox mounting
points, and the bodyshell was reinforcement. A type G50/021,
6-speed manual 993 gearbox with a shortened bell housing was
updated and rebuilt with a Billet side cover and a limited-slip
differential. The transmission and clutch assembly totaled $15,665.
A hydraulic pedal assembly was installed, and the actuation of the
competition clutch is direct.
Opening the hood reveals the same high level of craftsmanship that
is found elsewhere. The paintwork and coated surfaces are expertly
presented, and the racing-style fuel cell with the dual brake
master cylinders mean business. Underneath the car is more of the
same with large 917 type brakes, 935 type suspension, Bilstein
adjustable coil-over dampers, and moonball front strut mounts.
Walking up to the car and marveling at its overall presence and
attention to detail is one thing, sitting down in the beautifully
appointed yet purposeful interior is another. But the real
excitement begins when you turn the key, fire the engine, and
engage the clutch. This is a rare opportunity to own one of the
finest custom Porsches ever built.
