Despite the car being located in the shade with the bright background making it difficult to capture a good image, you can clearly see it is a very striking vehicle. |
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The second sighting |
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In July 2005 PCA was celebrating its 50th year with the annual Parade in Hershey, PA and while there, I noticed a black 964 with the following license plate | |
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I remembered the car from the year before when I'd seen it at the 2004 Parade in Fort Worth TX, but throughout the whole week of parade, despite seeing the car regularly, I had never managed to meet the owner. When I saw it this time it was parked in the shade with the owner unloading it. I introduced myself and asked him a few questions about the car and I found him to be a very interesting man with a very interesting story about how he came to have such a rare car. |
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His name is Bob W and he is a Professor Emeritus of Engineering at the University of Illinois. Bob has done research work in the area of rocket and jet engine integration issues such as the base drag question and his sharp mind and quick wit make him a very engaging man to talk to. His passion for well executed engineering is clear when he talks about many things, but especially when he speaks of his RUF RCT. |
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I must have asked Bob around a hundred questions while he showed me his car and he patiently answered them all. One of my questions was would he be interested in writing an article on his car for the RS America registry website and, being a true gentleman, he agreed. The result is below along with a few of my questions and Bob's responses. |
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The man and his machine |
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Bob W of IL |
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Besides being Professor Emeritus of Mechanical and Industrial Engineering at the University of Illinois, and in charge of the department's Automotive Systems Lab from 1978-1997, I spent time in Sweden at the Aeronautical Research Institute of Sweden and at Porsche's Weissach Research Center. |
When you look in the dictionary for the phrase
“a wolf in sheep's clothing” there should be a picture of this car. |
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One of the journalists at Road and Track is quoted as saying “Alois Ruf is the nicest person in Germany - or at least a very close 2nd” - but they didn't say who the other candidate was. I soon found that he treats everyone as if they had just bought his most expensive car, even if they haven't bought anything. |
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While in Germany, I drove almost everything Luis has built in the way of cars (including the legendary Yellow Bird, the CTR2, 3.8L BTR) and I discovered I really enjoyed the RCT. I had owned a 1978 3.3 Turbo which I never really liked very much and which had put me off turbo's. Besides, my wife said the car had a “fat ass”! |
Selecting the right car. |
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After I returned from Germany at Christmas in '93, I bought the RSA here in Chicago where I had a choice of three or four. I selected one with air conditioning, an Alpine single CD player, limited slip differential but no sunroof. I started on the “conversion” process in early spring 1994 (on one of only 84 1994 RSAs made) with the things I was able to do myself - such as fitment of the “big red” turbo brakes and the 18” RUF wheels and the modifications to the suspension. |
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Within the next few months, Luis shipped three crates full of parts over from Germany and in the fall of '94 he sent one of his mechanics over to do the rest of the transformation including converting the transmission to a six speed. |
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I was able to use a friend's automotive shop in a suburb of Chicago, which helped significantly as it meant we had full use of lifts and so forth. The actual shop conversion took a total of about two weeks, but part of that time was a delay due to the fact that the wrong differential ring and pinion had been sent and we had to wait for the correct one to arrive. |
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Reasons to convert. |
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The RCT is easy to drive, quick, responsive, flexible, driveable anywhere at any rpm. Owning a car converted to RUF specifications puts you in a pretty exclusive group. Most people do not know what a RUF RCT is and are amazed by the cars performance. Even among Porsche owners and fans, many people don't know what an RCT is, and some mistakenly consider RUF to be a tuning company that specializes in tuning Porsches. Quite the contrary, the RUF company is recognized internationally as an independent manufacturer of sports cars. They will gladly convert your Porsche into one of their models, but new cars built by them not only have significantly higher performance, they have their own Vin# and are without question definitely not Porsches. |
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So the RCT is different, but just how different is it from the stock RSA? |
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Analysis of the above proves conclusively that RCT > RSA |
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The RCT has exceptional driving characteristics particularly in the mid-range from 1500 to 5500 rpm. You can see in the torque curve below that at 2500 rpm it actually has more torque than the 3.8L BTR! The RCT's compressor/turbine combination is such that you have some boost on the throttle plate even at low rpm - which gives essentially instant response. Once again, compare the torque curve with other models such as a stock 964 C2 3.6L, a stock 993 C2 3.6L and the 993 based RUF BTR. |
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You do lose out somewhat to the BTR at higher rpm but, in the words of Luis Ruf, “..... it is not the top speed that is fun, it is the acceleration between 30 mph and 150 mph that is wonderful.” |
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The following table shows the (significant) differences between the two cars. |
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Performance Testing. |
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In April 1996, I was asked if I would loan the RCT to a reputable motoring magazine in order for them to perform a road test and write an associated article. |
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If you are ever asked this question and you decide to go ahead, I would like to offer you some advice. |
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DO NOT watch while they do performance tests on your car!!! |
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People side-stepping the clutch at 4500 rpm with the throttle wide open time after time - in your car - is not really something you want to witness - unless you like to hear and see the clutch and tires experiencing about a years worth of wear in ten or fifteen minutes. If the tester feels during a particular maximum performance run that the rpm may have dropped too low, then he simply does it all over again starting at 5000 rpm until he's convinced that he has the best result. |
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After my car had been tested, the inner edges of my rear tires were down to the cords - which I didn't notice because I couldn't see the inner edges of the tires from behind the car. The first sign that all was not well was when the left rear tire went down on my drive home. |
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When I checked the right rear tire, I found that it wouldn't have made more than another few hundred miles either. If you're ever bored or just like to accept a challenge, try to find two 18-inch tires in northern Florida on a Sunday. |
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Fortunately, a friend from near Palm Beach found some rims complete with tires and drove up to where I was in northern Florida. On Monday we took the car to Brumos in Jacksonville to change the tires, but even they said they couldn't get 18-inch tires in less than 24 to 36 hours. |
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Below is one page of the test notes detailing various aspects of the RCT's performance. Note the acceleration times and the comment on brake fade. |
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Test notes detailing the RCT's performance. Including acceleration times. |
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Below is the 1997 Car and Driver article on the RCT. |
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Q and A. |
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Keith V: Have you owned Porsches before your RS America/RCT? If so, how many? |
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Keith V: Is this the first RUF you have owned? |
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The reason the stock RSA whaletail was not used becomes glaringly obvious as soon as you open the rear deck lid. |
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Keith V: Roughly how many miles are on the car? |
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Keith V: What do you use the car for primarily? |
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The lightweight 18” dia. by 8.5” wide RUF front wheels display the “big red” brake calipers and cross-drilled rotors. |
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Keith V: What do you feel are the best traits/characteristics about the RCT? |
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Keith V: Do you have to get it serviced/maintained at a special shop? Are there peculiarities of ownership? |
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Engine access is significantly limited by the Turbo's intercooler. Also note the twin exhausts. |
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Keith V: Have you ever driven another car that is similar?
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Keith V: Have you ever driven your RCT on a race track? |
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The RUF front Lip spoiler reduces front end lift and ensures front end stability at speed. |
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Keith V: Were there many problems getting the car federalized to be registered in the US? |
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Keith V: What would you trade your RCT for - if anything?
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The rear quarter is dominated by the RUF 18” dia. by 9.5” wide rear wheels with 265/35 Michelin Pilot Sport tires. |
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Keith V: How would you sum up your feelings toward your RCT? |
RUF facilities in the USA |
RUF now have a facility here in the US in the Dallas TX area, and I'm sure that they'd be more than happy to convert your RSA into their latest version of the RCT - which is called the RCT Evo and has a further 40 bhp for a total of 425 bhp and around 420 ft-lbs of torque. |
To view the RUF USA website select www.rufautocentre.com |
If you're interested in seeing the list of conversion accessories in the RUF parts program for the 964, and would like to get a general idea of their respective prices, click here. |
In conclusion |
I want to thank Bob W of IL for agreeing to put this article together (although I'm not sure he realized quite what he was getting into) and for his patience in answering my barrage of questions. |
I can think of very few people who can understand and appreciate an RCT from initial concept to final execution as completely as Bob W of IL. |
When I consider Bob and his RCT, I can't help thinking that they are a well matched pair ..... I'd even go so far as to say ... they deserve each other! |