Bisimoto's 850-HP 1975 Porsche 911 is Not for the Faint of Heart

Not For the Faint-hearted

Regarded as the fastest production car in Germany during the mid-‘70s, the 1975 Porsche 911 Turbo already offers compelling performance car in stock form. Bisimoto Engineering took the already awesome 1975 Porsche 911 Turbo and transformed it into a raving beast. By the time they were done with it, its engine was cranking out an eye-popping 850 horsepower.

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A Penchant for Wild Auto Creations

Bisi Ezerioha, the founder of Bisimoto Engineering, has made a name for himself with his wild, one-of-a-kind, tuner-car creations. He is known for tuning cars that most driving enthusiasts would never consider tuning, e.g. his 1,029-horsepower 2014 Honda Odyssey minivan and his 430-horsepower 2006 Honda Insight drag car. This time, however, he chose a cherished classic as his project car – the legendary 1975 Porsche 911 Turbo.

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Excellent Foundation

When it comes to classic Porsche tuner-car favourites, the Porsche 911 Turbo (Porsche 930) is among the most popular options. One reason for this is the fact that the aftermarket currently offers a wide range of performance upgrades for this car at affordable prices. The Porsche 930 is also an exceptional sports car in its own right. Its perfectly balanced rear-engined, rear-wheel-drive body layout yields exhilarating driving dynamics, and it also benefits from a low-lying chassis that is already honed for sporty driving, sport-tuned steering and suspension systems, and a low curb weight that makes it easy to wield.

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A Monster of an Engine

When developing their project car, Bisi and his team sort to infuse their classic platform with new technology. In stock form, the 1975 Porsche 911 Turbo features a turbocharged 3.0-liter flat-six turbo engine that generates 256 hp (191 kW) and 243 lb.-ft. (329 N⋅m) of torque. The guys at Bisimoto Engineering swapped this engine with the more advanced, water-cooled 3.4-liter flat-six engine that drives the more recent Porsche 996. They then fitted this engine with two massive 57-mm billet turbochargers that provide 18 psi of boost. As a result, they managed to crank up the 3.4-liter engine’s output to 850 horsepower (from a stock output of 296 horsepower). 

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Performance

Bisi’s Porsche 911 Turbo project car weighs just 2,400 pounds. Given its enhanced output, it enjoys an extraordinary power-to-weight ratio that makes for an insanely thrilling driving experience. Its custom-fitted 996-generation throttle-by-wire system ensures exceptional responsiveness and reduces turbo lag. However, the immense power of its engine doesn’t overwhelm you; Bisi and his guys managed to tune the massive turbochargers to gradually increase boost pressure with each gear shift. They also installed a refined, close-ratio 997-generation 6-speed manual gearbox that delivers quick, seamless shifts for a truly engaging driving experience.

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A More Modern Front end

Bisimoto Engineering has also fitted its classic project car with HID headlights (with LED daytime running lights). The modern optics make the classic Porsche look much younger than it is. Bisi and his team also redesigned the front bumper, incorporating a quick-release system that enables them to detach the front bumper when they want to race the car on a track. To give the car a bit more flair, they mounted a rear-view mirror from a 550 Spyder on the drivers-side front fender and they also blacked out the Porsche emblem.

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Side View

The original Porsche 911 Turbo already has large fender flares, but they aren’t big enough to house the huge 17-inch Fifteen52 forged Outlaw 001s wheels that that would be able to withstand the car’s 850 peak horsepower. Therefore, the rear fender flares had to be enlarged. Those wheels were shod with wide, high-grip tires. For enhanced stopping power, the Bisimoto Engineering guys fitted this car with Stoptech brakes that were lifted from the 996-generation aftermarket catalog.

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I-ROC-inspired Rear End

While growing up in the 1970s, Bisi had gotten the chance to see some Porsche IROC 930 race cars at California's Riverside International Raceway, and needless to say, they had made quite an impression on him. Inspired by those cars, he designed the rear wing of his project car in IROC style and incorporated a large vent for the engine's huge intercooler. Also, Bisi and his team chose to leave the back end of the car uncovered to show off the massive turbochargers. 

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Stripped down Interior

To reduce the weight of the car, the team at Bisimoto Engineering stripped out the interior of the car. They removed its dashboard, its airbags, its stock seats, and its door and pillar padding, and they installed Recaro bucket sport seats, a Momo Prototipo steering wheel, and they added a roll cage to be on the safe side.

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For help with keeping your Porsche in racing, trim see the how-to sections of RennList.com