The GT-R version of the tenth-generation Skyline (R34) was launched in January 1999.

As with the R32 and R33, it performed well on the circuit, and in the 2002 Japan GT Championships it provided much excitement for its fans.

 

Nissan Skyline GT-R R34 –

Produced from 1999 onwards, the GT-R R34 featured an in-line 6-cylinder, twin-turbo engine with a displacement of 2.6 liters. It had a power output of 276 bhp at 7000 rpm and a torque of 289 lb ft at 4400 rpm.

The transmission was a six-speed manual and it had four-wheel drive. Additionally, it was equipped with an active rear LSD (Limited Slip Differential) for enhanced traction and handling.

Nissan Skyline R34’s top version is basically an evolution of the old R33 GT-R, but with a much sharper design and a truly improved chassis, making this the best Skyline GT-R ever and, in comparison to other sports cars, one of the fastest cars in the world:

To develop an engine that generates high power/torque of more than 368 kw (500ps)/540 N/m (55 kg/m) and provide the high durability required for road-driven cars. The techniques and knowledge that NISMO accumulated throughout years of racing have been adoped into the Z2 engine resulting in quality that some may even find extreme for a road driven vehicle.

There were several engine specification variations available for the Nissan Skyline Model R34. 
Some of the notable variations:

RB26DETT – This was the standard engine for the Nissan Skyline GT-R R34. It was an inline-6, twin-turbocharged engine with a displacement of 2.6 liters. It produced a power output of 276 horsepower and a torque of 289 lb-ft.

RB25DET – This engine was used in the non-GT-R versions of the Nissan Skyline R34, such as the GT-T and GT-X. It was also an inline-6, but with a displacement of 2.5 liters.

The power output varied depending on the specific model and tuning, ranging from around 250 to 280 horsepower.

RB20DE(T) – Some entry-level models of the Nissan Skyline R34 were equipped with the RB20DE or RB20DET engines.

These were also inline-6 engines, but with a smaller displacement of 2.0 liters.

The RB20DET was the turbocharged version, producing around 210 horsepower.

RB25DE – This was a naturally aspirated version of the RB25DET engine, without the turbochargers. It was used in certain non-turbo models of the Nissan Skyline R34, offering a power output of around 190 horsepower.

Please note that the availability of these engine variations may vary based on the specific trim level and market region.