1991 Porsche RUF CR4
1991 Porsche RUF CR4
1991 RUF CR4 “Diablo Negro"
Engine No *62L14362*
Engine Type M 64/01
Gearbox No 3L06668
Gearbox Type G 64 / 00
Exterior Color Satin Black Metallic
Interior Color Black Full Leather
Mileage 90,268 Kilometers / 56,089 Miles
Ruf Automobile Background:
Ruf Automobile GmbH is a German automobile tuning company founded in 1939 by Alois Ruf Sr. The company was and remains to this day, based in Pfaffenhausen, Germany. More recently, starting in 1977, the company now run by Alois Ruf Jr. has been an independent manufacturer building complete vehicles based on production Porsches. Modern Ruf vehicles are derived from completed Porsches that are purchased without individual VIN/Chassis numbers specifically known as a “Body in White.” From these vehicles, RUF manufactures, transforms and engineers its own original vehicles, although the Porsche underpinnings are always readily evident. Additionally, as Ruf continues to install home-made parts to these automobiles, instead of simple “badge" engineering, the company is officially recognized as an independent manufacturer by the German government.
As such, all RUF models have certified Ruf VIN / Chassis numbers and are recognized as independent production models, rather than modified Porsches. Ruf is historically known for its record breaking 211mph CTR, and is the largest, most renowned company to make Porsche performance enhancements. Though primarily a manufacturer, Ruf has also made a name for itself operating as a car tuner, a specialist in customer-requested Porsche to Ruf conversions and as a restorer of classic Porsche and Ruf models. Ruf also has en extensive facility and network of agents that carry out services and repairs of both Ruf and regular production Porsches.
1991 Ruf CR4 “Diablo Negro” VIN: W09CD0360MPR06006
This particular Ruf Porsche is believed to be a true one-of-one, “piece-unique” example. It and a similar sister car, a CR2 were ordered and commissioned new by Kenjiro Ishida, president and CEO of Ishida Engineering Ltd., of Oyamasaki, Japan. Ishida Engineering Ltd., is the sole official Ruf licensed agent and distributor for Ruf automobiles in Japan. They are also a fully licensed, Ruf authorized parts, repair, service and conversion facility. Most of the production Ruf Porsches consists of limited production runs based on the more popular Porsche production models. These include the 1977-1989 Porsche 930 Turbo 3.0 and 3.3-liter models, the “BTR” based on the 1978 through 1989 911 model, the “CTR” which first appeared in 1987 and several other well known models such as the RCT, Turbo R, RGT, R-Turbo and a variety of others. This CR4 and sister CR2 where not Ruf regular production models but rather one-off commissions with no previous or subsequent follow-on version.
This CR4, based on a 1991 Porsche 964 Carrera 4 and the sister car, a CR2, is based on a 1992 Porsche 964 Carrera 2. Both ordered new by Mr. Ishida as clean build vehicles from Ruf. This CR4 started life as a stock Porsche completed in white with no options other than the standard sunroof. It was delivered like all Ruf Porsches, direct form the Porsche Factory with no individual VIN / Chassis number and no chassis plate. It was completely rebuilt and re-manufactured new by Ruf at their Pfaffenhausen, Germany facility over a two-year period. It was competed in January of 1994 and delivered new in February of 1994 to Ishida Engineering Ltd. This Ruf featured the following Ruf specific, special options, features as well as these Porsche optional equipment:
-RUF 17-Digit Manufacturers VIN Number and Chassis ID Plate
-RUF 18-Inch Wheels
-RUF Front Spoiler with Integral Oil-Cooler Inlets and Vents
-RUF White Front Supplemental Lighting and Turn Signals
-RUF Rear Valence and Back-Up light System
-RUF Exhaust System
-Porsche RS-Lightweight Type Rear Spoiler
-Porsche Rear Window Wiper / Wash System
-RUF Front Bonnet Badge
-RUF CR4 Rear Badge
-RUF Cross-Drilled and Ventilated Rotors
-RUF Brake Calipers
-RUF Leather-Wrapped Sport Steering Wheel
-RUF 8,000rpm Tachometer
-RUF 300kph Speedometer
-RUF Alloy, Drilled Pedal Assemblies and Dead-Pedal
-RUF Sports Seats Left and Right
-RUF Rear “Jump” Seats
-Porsche Classic Radio / Navigation System
-RUF Designed Amplifier and Speaker System
-RUF Embossed Floor Mats
-RUF Embossed Front Seats
-RUF Alloy Door Sills
-Two Sets of RUF Keys and both RUF and Porsche Key FOBs
-RUF Embossed Fitted Car Cover
-Signed Under Bonnet and “Diablo Negro” Signature by Alois Ruf
-RUF Front Shock-Tower Stabilizing Bar Assembly
-RUF Tuned M64/01 3.6-liter, 290bhp Engine
-RUF Tuned G64 Porsche Transaxle with Revised Ratios and Limited Slip Differential
The exterior of the car was painted a strikingly ominous "Satin Black Metallic” with a very complementary black, full-leather interior. Alois Ruf Christened the vehicle “Diablo Negro” or “Black Devil” as a result of the car's sinister looking dark appearance. The underside bonnet as such bears not only Alois Rue's signature but the name “Diablo Negro” as well.
After arrival in Japan and delivery to Ishida Engineering Ltd., in Oyamasaki, Japan, the car was first road-registered on March 6th, 1994. The registration was issued direct to Mr. Ishida's company. The vehicle remained with him as part of his own collection until finally being sold to the first private owner. It would remain in Japan over the next 22 years until being purchased by our company on June 10th, 2016. At the time of our purchase, this Ruf had covered 90,065 kilometers / 55,963 miles from new. The Japanese registration records confirm that the last private owner had the car registered in Hokkaido, the northern most island of Japan. The car was registered to Mr. Terumi Yoshida in Sapporo on Sapporo City plates “334 168.” Mr. Yoshida sold this Ruf back to RUF Cars Japan, Ltd., which was the new name of the original Ishida Engineering Ltd. The company remained in the same location in Oyamasaki, Japan. It was offered for sale in May of 2014 and the purchased by classic car dealers Crystal Create Company Ltd., of Kasukabe, Japan. They registered this Ruf on Kasukabe, Japan plates “399 2075.” It would remain on these plates until our company's purchase and export in June of 2016.
The Japanese road registration records and our own purchase records document the following odometer readings
June 10th, 1998 Odometer Recorded as 46,700 kilometers / 29018 miles
May 27th, 2013 Odometer Recorded as 75,000 kilometers / 46,602 miles
June 28th, 2014 Odometer Recorded as 78,000 kilometers / 48,466 miles
May 19th, 2015 Odometer Recorded as 84,200 kilometers / 52,319 miles
June 10th, 2016 Odometer Recorded as 90,065 kilometers / 55,963 miles
October 10th, 2017 Odometer Recorded as 90,268 kilometers / 56,089 miles
1991 Ruf CR4 “Diablo Negro” Today:
After the purchase by our company this Porsche was exported from Japan and formally imported to the States. On arrival it was completely and thoroughly inspected and evaluated. A complete set of full fresh major services were completed. The car was cleaned and detailed and then sold immediately without being offered for sale or advertised to a client who at the time was acquiring special and unique Porsches as the foundation for a private museum collection. The new owner registered and titled the vehicle but never drove it. The only mileage added during his ownership (194 kilometers / 120 miles) was as a result of additional services and sorting during regular maintenance programs. As a result of declining health the entire collection was offered up for sale and acquired by our company in Mid-October of this year.
Today this exceedingly rare, one-of-one Ruf CR4 is offered for the first time publicly here in the States for sale. It is sold completely with all of the original manuals, tools, books and documents that originally came with the car new. It is also sold with a custom made specially fitted car cover with the embossed lettering "1991 Ruf CR4.”