The "RB" engines
RB25
1993 RB25DET with VCT
1998 NEO RB25DET
The 2.5 L RB25 engine was produced in three forms:
RB25DE - twin-cam 140 kW/190 PS and 147 kW/200 PS (with VCT) @ 6000 rpm, 255 N·m (26.0 kgf·m) @ 4000 rpm)
RB25DET - twin-cam turbo (245 to 250 hp and 319 N·m)
NEO RB25DET - twin-cam turbo (206 kW (280 PS) @ 6400 rpm, 362 N·m (37.0 kgf·m) @ 3200 rpm)
RB25DE and DET engines produced from August 1993 also featured NVCS (Nissan Variable Cam System) for the intake cam. This gave the new RB25DE more power and torque at lower rpm than the previous model.
In May 1998 a NEO head was fitted, which enabled the engine to be classified as a low emission vehicle engine (LEV). The non-VCT and non-turbo was fitted to the R32 Skyline, the VCT turbo and non-turbo was fitted to R33 Skylines and Stageas. R34 Skylines also use these engines, but they are fitted with a NEO head.
RB26DETT
RB26 in an R33 Skyline
The first 2.6 L RB26DETT featured twin-turbochargers and produced 280 PS (206 kW) @ 6800 rpm and 260 ft·lb (353 N·m) @ 4400 rpm. The last series of the RB26DETT produced 280 PS (206 kW) @ 6800 rpm and 289 ft·lbf (392 N·m) @ 4400 rpm. However, several stock (unmodified) engines have been dyno tested and reported to obtain nearer the 320 hp mark. It is widely known for its strength and extreme power potential. It is not uncommon for 600 hp to be achieved on the standard bottom end. With regular maintenance, many of these engines have been driven way past the 100,000 mile mark with a few heading toward 200,000 miles.
With extreme modification, the RB26 motor is capable of power in excess of 1 megawatt (or over 1,340 hp).
(From Japanese wiki) Autech made a small number of R32 GTS-4 Skylines with a naturally aspirated RB26DE conversion. The engine used forged pistons, a higher lift cam, and a tuned ECU. It produced 162 kW (220 PS) @ 6800 rpm and 245 N·m (25.0 kgf·m) @ 5200 rpm.
Although there was never a factory Nissan Variable Cam System for the RB26, tuning companies such as HKS sell aftermarket options.
Originally the R32 GT-R was planned to have a 2.4L RB24DET, and compete in the 4000cc class (in Group A rules, the displacement is multiplied by 1.7 if the engine is turbocharged). This was when Nismo was going through the process of designing the R32 GT-R to be a Group A race car. But when the engineers added the AWD system, it would make the car heavy and less competitive. Nismo made the decision to make the engine a 2.6L twin turbo, and compete in the 4500cc class, resulting in the RB26DETT known today.
The RB26DETT was used in the following cars:
Nissan Skyline GT-R R32
Nissan Skyline GT-R R33
Nissan Skyline GT-R R34
Nissan Stagea 260RS
RB26DETT Z2
This is the engine used in the Nissan Skyline Z-Tune. It is basically the RB26 block, modified with Nismo parts, and stroked to 2.8 L. The end result was the RB26 Z2, which puts out 500 hp and 550 N·m of torque. They originally aimed for 630 hp, but the engine had to be de-tuned after problems were encountered with high emission values.
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1993 RB25DET with VCT
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1998 NEO RB25DET
The 2.5 L RB25 engine was produced in three forms:
RB25DE - twin-cam 140 kW/190 PS and 147 kW/200 PS (with VCT) @ 6000 rpm, 255 N·m (26.0 kgf·m) @ 4000 rpm)
RB25DET - twin-cam turbo (245 to 250 hp and 319 N·m)
NEO RB25DET - twin-cam turbo (206 kW (280 PS) @ 6400 rpm, 362 N·m (37.0 kgf·m) @ 3200 rpm)
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RB25DE and DET engines produced from August 1993 also featured NVCS (Nissan Variable Cam System) for the intake cam. This gave the new RB25DE more power and torque at lower rpm than the previous model.
In May 1998 a NEO head was fitted, which enabled the engine to be classified as a low emission vehicle engine (LEV). The non-VCT and non-turbo was fitted to the R32 Skyline, the VCT turbo and non-turbo was fitted to R33 Skylines and Stageas. R34 Skylines also use these engines, but they are fitted with a NEO head.
RB26DETT
RB26 in an R33 Skyline
The first 2.6 L RB26DETT featured twin-turbochargers and produced 280 PS (206 kW) @ 6800 rpm and 260 ft·lb (353 N·m) @ 4400 rpm. The last series of the RB26DETT produced 280 PS (206 kW) @ 6800 rpm and 289 ft·lbf (392 N·m) @ 4400 rpm. However, several stock (unmodified) engines have been dyno tested and reported to obtain nearer the 320 hp mark. It is widely known for its strength and extreme power potential. It is not uncommon for 600 hp to be achieved on the standard bottom end. With regular maintenance, many of these engines have been driven way past the 100,000 mile mark with a few heading toward 200,000 miles.
With extreme modification, the RB26 motor is capable of power in excess of 1 megawatt (or over 1,340 hp).
(From Japanese wiki) Autech made a small number of R32 GTS-4 Skylines with a naturally aspirated RB26DE conversion. The engine used forged pistons, a higher lift cam, and a tuned ECU. It produced 162 kW (220 PS) @ 6800 rpm and 245 N·m (25.0 kgf·m) @ 5200 rpm.
Although there was never a factory Nissan Variable Cam System for the RB26, tuning companies such as HKS sell aftermarket options.
Originally the R32 GT-R was planned to have a 2.4L RB24DET, and compete in the 4000cc class (in Group A rules, the displacement is multiplied by 1.7 if the engine is turbocharged). This was when Nismo was going through the process of designing the R32 GT-R to be a Group A race car. But when the engineers added the AWD system, it would make the car heavy and less competitive. Nismo made the decision to make the engine a 2.6L twin turbo, and compete in the 4500cc class, resulting in the RB26DETT known today.
The RB26DETT was used in the following cars:
Nissan Skyline GT-R R32
Nissan Skyline GT-R R33
Nissan Skyline GT-R R34
Nissan Stagea 260RS
RB26DETT Z2
This is the engine used in the Nissan Skyline Z-Tune. It is basically the RB26 block, modified with Nismo parts, and stroked to 2.8 L. The end result was the RB26 Z2, which puts out 500 hp and 550 N·m of torque. They originally aimed for 630 hp, but the engine had to be de-tuned after problems were encountered with high emission values.
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