1979 Porsche 911 
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This 911 started life as a humble US version 1979 Porsche 911 SC. We acquired the car from Blair Kiloran in 1992 and have made progressive modifications to the car over the years. Vehicle preparation is provided by Chris Kirby of K&B Auto. |
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The original 3.0 SC engine block has been maintained, however, the engine has been progressively upgraded from its original 180hp output to its present configuration as a RSR 3.0 sprint engine, which, can produce 330hp at the crank. We have experimented with many exhaust configurations over the years and have settled on a unique adaptation of a Flow Master dual in dual out muffler with 1 5/8” GT Racing headers. This combination has been dyno proven to maximize our performance while providing reasonable sound attenuation. |
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We have adapted a full coil over suspension set up. We have purposely adapted soft spring rates to provide the driver with a more forgiving set up that is preferred for the One Lap and Targa events where it is necessary to attack the road without know the subtle characteristics of the pavement.
930 Calipers and rotors have been fitted front and back. Kool Kevlar pads have been chosen for their reasonable wear and their excellent low temperature performance.
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We have chosen 17” wheels for our application which allows us to run wider tires inside the SC flairs than would be available with 16” or 15” rims. After some lengthy conversations with the Tire Rack we decided to run the Goodyear Eagle F1 GS-D3 in 2003. This turned out to be an excellent choice for the 911. These tires performed equally well in wet and dry conditions and inspired driver confidence. The structural integrity of the tire was also proven when circumstance forced us to run half a stage in the Targa Newfoundland with a deflated left rear tire. The wheel and tire were destroyed but they maintained their integrity and did not damage the rest of the vehicle. We plan to run the same Goodyear tires in 2004. |
 Broken rim from the 2003 Targa Newfoundland. |
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It is very tempting to increase the SC wheel wells to the wide body RSR or Turbo configuration, however, we have decided to maintain the narrow body configuration. The narrow body has less aerodynamic drag than the wide body style, which helps the car get down the straights with a bit more top speed. In the long term we may decide to widen the wheel arches
slightly and style the body after the 1974 911 3.0. |
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In the past we have run the standard front RSR bumper with a
rear turbo style whale tail. In 2003 we added a front splitter. The splitter
noticeably improved front end stick but did shift the balance of the car away
from the rear. This instability was very noticeable on high speed corner entry.
This year we intend to experiment with RS3.8 wings including a high wing configuration
to help restore the overall balance.
The car has been prepared to meet FIA standards for road race and rally competition.
This could be one of the fastest 911’s equipped with a trailer hitch. We have found that a trailer is critical for competing in the One Lap of America. Without a trailer we would not be able to bring critical spare parts such as spare tires.
Torque: 225 ft-lbf @ 6500rpm
Power: 275 hp @ 8000 rpm
Acceleration:
0-60mph <5 sec
0-100mph <12 sec
Top Speed: 147mph @ 8000 rpm in 5th gear
Handling:
Street Tires: Goodyear Eagle F1 GS-D3: 1.06g on 200ft skid pad
R-Compound Tires: Kuhmo Victoracers: 1.2g on track (measured with DL90)
The current vehicle specification will be added shortly.
