Nissan RB engine

Volume, cylinder diameter and piston stroke for RB engines:
RB20 - 2.0 L (1998 cc, cylinder diameter: 78.0 mm, stroke: 69.7 mm)
RB24 - 2.4 liters (2428 cc, cylinder diameter: 86.0 mm, stroke: 69.7 mm)
RB25 - 2.5 liters (2498 cc, cylinder diameter: 86.0 mm, stroke: 71.7 mm)
RB26 - 2.6 liters (2568 cc, cylinder diameter: 86.0 mm, stroke: 73.7 mm)
RB30 - 3.0 liters (2962 cc, cylinder diameter: 86.0 mm, stroke: 86.0 mm)

There were various versions of the 2.0 liter RB20 engines:

• RB20E - one camshaft (96 to 110 kW (130 to 145 hp) at 5,600 rpm, 167 to 181 N · m (17 to 18.5 kgf · m) at 4,400 rpm). Installed in the Japanese market on the Nissan Skyline R31, in Australia and New Zealand, met at the Holden Commodore .
• RB20ET - one camshaft with turbocharging (125 kW (170 hp) at 6000 rpm, 206 N · m (21.0 kgf · m) at 3200 rpm).
• RB20DE - two camshafts (110 to 114 kW (150 to 155 hp) at 6400 rpm, 181 to 186 N · m (18.5 to 19 kgf · m) at 5600 rpm) Compression ratio 10.0 , cylinder diameter 78 mm, piston stroke 69.7 mm. When the timing belt is broken, the valve bends.
• RB20DE NEO are distinguished by reduced emissions, engine power 155 hp The engine has been upgraded combustion chamber and the timing, electronic engine control unit, an additional crankshaft position sensor.
• RB20DET - two camshafts with turbocharging (158 kW (215 hp) at N · m (27.0 kgf · m) at 3200 rpm). This is a turbocharged version of the RB20DE, installed on Skyline (31, 32 bodies), Cefiro (31 bodies), Fairlady (31 bodies) and Laurel C32-C33.
• RB20P - one camshaft (94 hp at 5600 r / min and 142 N · m at 2400 r / min)
• RB20DET-R - two camshafts with turbocharging (210 hp at 6400 rpm and 245 N · m at 4800 rpm)
• NEO RB20DE - two 155 hp camshafts, improved low torque to reduce fuel consumption and emissions.

The first RB20E / ET / DE / DET engines were installed on the Nissan Skyline R31. Early engines with two overhead camshafts are referred to as "Red Top", as they have red covers. Early engines with dual overhead camshafts used the NICS (Nissan Induction Control System) injection system, and later Twin Cam engines used the ECCS (electronically concentrated Control System). Later versions used the engine control system ECCS. The Z31 200ZR was equipped with an intermediate RB20DET type of network interface. RB20DET Red Top camshaft with intake manifold width of 240 ° at the inlet, 240 ° at the exhaust, lift 7.3 mm and 7.8 mm. Laurel, R32 Skyline and Cefiro used the second generation (1988–1993) RB20E / DE / DET. It had an improved cylinder head design, and an ECCS engine control system was used. Such engines were known as "Silver TOP".

Duration of the timing on the camshaft RB20DE: 232 ° intake, 240 ° exhaust: lift 7.3 mm and 7.8 mm; camshaft RB20DET: 240 ° intake, 240 ° exhaust: lift 7.3 mm and 7.8 mm. The RB20DET-R was produced in a limited edition of 800 pieces and was installed on the Nissan Skyline 2000GTS-R (HR31). The RB20P engine is a version of the RB20, gasoline + on liquefied carbon gas, but with 12 valves (OHC).

This is a relatively rare and unique engine, since it was not produced for the domestic market of Japan . The engine was installed on the Nissan Cefiro left-hand drive, exported from Japan. Mechanically, the engine was assembled from the head of the RB30E (one camshaft), the RB25DE / DET block and the RB20DE / DET crankshaft with pistons 34 mm high. This engine is a carburetor instead of an injection Nissan ECCS. The overall modification should correspond to the cylinder head with two camshafts from other engines of the RB series, together with the carburetor. The standard form with one camshaft produced 141 hp. at 5000 revolutions per minute and 197 Nm of torque at 3000 revolutions per minute.

The 2.5-liter (2498 cc) RB25 engine was produced in four versions:

• RB25DE - without turbocharging two-cam 140 kW / 190 hp (180–200 hp) at 6000 rpm, 255 Nm (26.0 kgf · m) at 4000 rpm;
• RB25DET - twin turbo turbo (T3 Turbo) (245 to 250 hp and 319 Nm);
• NEO RB25DE - without turbocharging dual-camshaft 147 kW / 200 hp at 6000 rpm, 255 Nm (26.0 kgf · m) at 4000 rpm;
• NEO RB25DET - two-cam turbocharged (206 kW (280 hp) at 6400 rpm, 362 Nm (37.0 kgf · m) at 3200 rpm).

The RB25DE and DET engines, manufactured since August 1993, began to be equipped with NVCS (Nissan Variable Cam System) for the intake camshaft. This gave the new RB25DE more power and torque at lower revs compared to the previous model. Since 1995, the ignition system has been upgraded - the coils have lost an external switch and got a built-in power transistor. Power rose to 190 hp These motors are referred to as second series engines. In addition to the coils, there was another mass air flow sensor , engine ECU, camshaft position sensor and throttle position sensor. Mechanically, Series 1 and Series 2 are the same, except for the intake camshaft with a phase change mechanism.

In May 1998, the NEO series cylinder head was installed, which allowed the engine to be classified as a low-emission vehicle (LEV) due to its lower fuel consumption and exhaust emissions. The NEO series engines began to install conventional valve tappets, instead of hydraulic compensators, the camshafts were changed and a forked intake manifold appeared. The combustion chamber has been reduced, connecting rods from RB26DETT and new pistons were installed to compensate, while the compression ratio increased. A larger turbine was installed on the turbocharger, one modification of the turbochargers had a compressor impeller and turbines made of steel, the second version was equipped with a compressor impeller made of composite materials, and a turbine impeller manufactured using ceramics. Also installed additional DPKV and a modified engine control unit. All these improvements have allowed to increase the power to 200 hp, improved environmental friendliness and efficiency of the motor, while not reducing its reliability.

• R32 Skyline RB25DE, opening time: 240 ° intake, 232 ° release: rise 7.8 mm, 7.3 mm;
• R33 Skyline RB25DE, opening time: 240 ° intake, 240 ° release: rise 7.8 mm, 7.8 mm;
• RB25DET, opening time: 240 ° inlet, 240 ° release: rise 7.8 mm, 7.8 mm;
• RB25DE NEO, opening time: 236 ° inlet, 232 ° exhaust: lift 8.4 mm, 6.9 mm;
• RB25DET NEO, opening time: 236 ° inlet, 232 ° exhaust: lift 8.4 mm, 8.7 mm.

The RB26DETT engine with a volume of 2.6 liters, in-line, 6-cylinder, was used mainly in the 1989-2002 Nissan Skyline GT-R. The cylinder block RB26DETT cast iron, aluminum cylinder head. In the cylinder head 24 valves (4 valves per cylinder), and two camshafts. The RB26DETT injection is different from other RB engine series in that it has six separate throttle valves instead of one. The engine is installed parallel system Twin Turbo. The turbines are arranged so that the front turbine operates from the first 3 cylinders, and the rear turbine operates on 4, 5, and 6 cylinders. Turbochargers of the same size, with integrated wastegate in the hot part of the turbine, to limit the boost pressure to 0.7 bar, although the Skyline GT-R has a built-in limiter of 1 bar.

The first RB26DETT with a twin turbocharger produced about 280 hp. (206 kW) at 6800 rpm and 353 Nm at 4400 rpm. The latest series RB26DETT produces 280 hp. (206 kW) at 6800 rpm and 392 Nm at 4400 rpm. However, several measurements of unmodified engines showed a maximum power of 330 hp. The reason for this discrepancy is the gentlemen's agreement between the Japanese automakers, who decided to limit the engine power of any car to 280 hp.

This engine is widely known for its performance and extremely high potential for tuning. It is not uncommon to achieve 600 hp, which can be obtained without modifying the inside of the engine. With regular maintenance, many of these engines drove 160,000 km, and some even all 320,000 km. With an extreme modification, the RB26 engine is capable of power in excess of 1 megawatt (or more than 1340 horsepower).

The engines R32 RB26, released before 1992 , there is the problem of oil starvation, as the oil pump was too small, which ultimately led to a lack of lubrication at high speeds. In later versions of the RB26 this problem was eliminated. Parts manufacturers manufacture larger oil pumps to correct this problem. Originally it was planned to install a 2.4-liter RB24DETT on the R32 GT-R, for competing in a class of 4000 cm³ (the volume is multiplied by 1.7, with turbocharging). But when engineers added an all-wheel drive system, it made the car heavy and less competitive. Nismo decided to make a 2.6-liter twin turbo engine, and compete in the 4500 cc class, after which the RB26DETT engine appeared.

RB26DETT was installed on the following cars:

• Nissan Skyline GT-R in the body of the R32, R33, R34
• Nissan Stagea 260RS
• Tommy Kyra ZZ II

RB26DETT N1 is a modified version of the RB26DETT engine developed by Nismo (Nissan Motorsports). Nismo engineers came to the conclusion that the standard RB26DETT engine required too complex and multiple maintenance when used in group-A or Group-N racing cars and, therefore, designed the N1 unit. Nismo installed a crankshaft of higher strength than originally, because during the races the engine RB26DETT worked between 7000 and 8000 rpm. The engine also received improvements regarding the amounts of water and oil channels in the engine block. Installed new pistons and piston rings (1.2 mm), upgraded camshafts and turbochargers. Although all versions of the RB26DETT N1 engine used Garrett T25 turbochargers, the specifications of the turbocharger changed in the engine version installed on the R34. In engines installed on R32, R33 used T25 turbo compressors with roller bearings . The R34 RB26DETT N1 uses the Garrett GT25 with ball bearings]. The biggest difference between the turbochargers used in the N1 engine and the standard RB26DETT engine is that the turbine wheels in the N1 version are made of steel rather than the ceramics used for standard RB26DETT turbochargers. Ceramic turbine wheels are very unreliable when used at high speeds (this is due to an increase in the magnitude of the centrifugal forces with increasing speed and insufficient strength of ceramic elements in the gap). With such advances in manufacturing technology as compaction and the use of various materials, the N1 engine can theoretically produce over 1,900 hp. (1,400 kW).

The Nismo RB26DETT N1 engine block uses 86mm cylinders, which can be enlarged to either 87 mm or 88 mm, the N1 block is printed with 24U marking, while the standard RB26DETT block is marked from 05U. The RB26DETT N1 unit is compatible with all GT-R cars.

The engine used in the Nissan Skyline GT-R Z-Tune. The cylinder block is more reliable than the N1, increased volume to 2.8 liters (diameter and stroke: 87.0 x 77.7 mm). The result is the RB28S2, which produces 510 hp. (368 kW) and 540 Nm of torque.

Four models of the 3.0-liter RB30 were produced:

• RB30S - single-shaft carburetor;
• RB30E - electronic injection, single-shaft (114 kW at 5200 rpm, 247 Nm (25.2 kgf · m) at 3600 rpm);
• RB30E R31 Skyline - electronic injection, single-shaft (117 kW at 5200 rpm, 252 Nm (25.2 kgf · m) at 3600 rpm);
• RB30ET VL Commodore - electronic injection, single-shaft, with turbocharging (150 kW at 5600 rpm, 296 Nm at 3200 rpm).

This engine was installed on Nissan Skyline, Patrol, Terano, and on the rights purchased by Holden , because Holden 202 (3.3 liters) could no longer meet the requirements of toughening emissions. Nissan Motor Co. sold Holden's RB30E to Commodore VL. The engine in the VL because of the radiator installed below in the engine compartment, cracked the cylinder head, as all the air rises to the cylinder head. This issue was resolved on the Nissan Skyline R31 by installing a radiator above. The engine was pretty reliable, not counting the problem. RB30S was installed on some exported Middle Eastern models Skyline R31, Nissan Patrol. The RB30E was installed on the R31 Skyline and VL Commodores in Australia, as well as in South Africa on the R31 Skylines (from 126 kW at 5000 rpm and 260 Nm at 3500 rpm).

The turbocharged RB30ET (producing 150 kW) was installed only in a Commodore VL (available in all models) and consisted of a lower compression ratio RB30E, a more powerful oil pump, a T3 Garret turbocharger, a 250 cm³ injector and a different intake manifold. The engine itself is still popular today in a modified form on the Australian Drag Racing. Nissan Special Vehicles Division Australia produced two limited models of the Skyline R31, GTS1 and GTS2. They installed a little more powerful engines RB30E due to the longer opening phase of the valves.

GTS1 RB30E - single-shaft (130 kW at 5500 rpm, 255 Nm (26.0 kgf · m) at 3500 rpm) - has a special camshaft profile, special exhaust; GTS2 RB30E - single-shaft (140 kW at 5600 rpm, 270 Nm (27.5 kgf · m) at 4400 rpm) - a special camshaft profile, special exhaust, Piggi Back computer, valve porting.

This rare engine was used in the Tommy Kyra M30, R31 Skyline GTS-R. The modified RB20DE head was bolted onto the RB30E unit. The engine produced 177 kW (240 hp) at 7000 rpm and 294 Nm (30.0 kgf · m) at 4800 rpm.

Nissan does not produce this engine; it is a turbocharged RB30E unit with a twin-shaft unit. Engine developed in Australia (RB25 / 30 or RB26 / 30), and consists of a RB30E unit paired with cylinder heads from RB25DE, RB25DET or RB26DETT and turbocharged. Installing a TwinCAM head from any of these engines onto the RB30E compression standard of the block gives the ideal compression ratio for a civilian turbocharged engine of 8.2: 1, which makes the conversion most effective, unlike RB30E to RB30ET with a high compression ratio. Although this engine has a larger volume than the RB26DETT, the maximum possible power is lower, because the RB30 unit lacks internal reinforcement and, therefore, does not tolerate high revolutions due to harmonic problems at 7500 rpm. To compensate for oscillations, the RB30DET produces more torque at lower revs due to a larger stroke. However, they were known to have reached engine speeds of up to 11,000 rpm with great balancing and use of an RB26 head with solid lifting devices. The power of the RB30DET in this form can far exceed the power of the RB26DETT, the RB30DET is usually used only in rear-wheel drive cars, due to its simple installation. On all-wheel-drive GTR or GTS4, the backplane must match the all-wheel-drive pallet, as its pattern is different from the RB30. There is also a RB30DETT kit, produced by OS Giken in Japan , which uses a RB26 head, and corresponds to liners, cylinder bore and piston stroke of 86 mm. The engine is designed for power in excess of 600 horsepower. There was also an RB30E engine installed in the Nissan 240Z, showing the result of passing 1/ of a mile in 7.86 seconds at 285 km / h, and the engine power of 1,400 horsepower.

The RB-X GT2 (REINIK) was specially designed for the Nismo 400R. The difference between this engine and the RB26DETT is that the engine has increased volume (87.0 × 77.7 mm) to 2771 cc. The engine produces 331 kW or 443 hp at 6800 rpm and 469 Nm at 4400 rpm. This engine was manufactured with a reinforced cylinder block and a cylinder head, head gasket made of metal, pistons with cooling channels, forged crankshaft and connecting rods, N1 turbine with enhanced drive, zero resistance air filter, stainless steel piping, It was suggested for the usual RB26DETT.