Nissan rb20det engine

The Nissan rb20det motor belongs to the popular series of power units - Nissan RB. Units of this series began to be produced in 1984. Came to replace the L20 engine. The predecessor of rb20det is rb20de.

This is the first version of the internal combustion engine, which is an in-line six-cylinder unit with a cast iron cylinder block and a small crankshaft.

The RB20DET engine appeared in 1985 and immediately became famous among motorists. Unlike the RB20DE, it received 4 valves per cylinder (instead of 2 valves). The cylinder block was equipped with individual ignition coils. The control unit, intake system, pistons, connecting rods and crankshaft have undergone design improvements.

Production of the RB20DET was to be phased out 15 years after the start of production. Only in 2000, the motor became irrelevant and was replaced by other internal combustion engines, such as the RB20DE NEO. In the novelty of that time, special attention was paid to environmental friendliness. The control unit was also changed, the cylinder head, intake and crankshaft were modernized.

RB20DET was also produced in a turbocharged version. The turbine inflates 0,5 bar. In the turbocharged engine, the compression ratio was reduced to 8,5. In addition, the nozzles, the control unit were changed, another cylinder head gasket was installed, the crankshaft, connecting rods and pistons were changed.

Nissan RB20DET does not need valve adjustment, which distinguishes it from its analogues. The exception is the NEO version, which was not equipped with hydraulic lifters. RB20DET has a belt drive. The timing belt is replaced every 80-100 thousand kilometers.

Motor Specifications

Engine	Volume, cc	Power, hp	Max. power, hp (kW) / at rpm	Max. torque, N/m (kg/m) / at rpm
RB20DET	1998	180 – 215	180 (132) to 6400 190 (140) to 6400 205 (151) to 6400 210 (154) to 6400 215 (158) to 6000 215 (158) to 6400	226 (23) to 3600 226 (23) to 5200 240 (24) to 4800 245 (25) to 3600 265 (27) to 3200

The engine number is located near the junction of the engine and gearbox in the lower right side when viewed from the front of the car. When viewed from above, you should pay attention to the area between the engine shield, the exhaust manifold and the pipes of the air conditioner, furnace.

Unit reliability

The RB20DET motor is incredibly reliable, which has been repeatedly tested in practice. Resource and load resistance is characteristic of the entire RB-series as a whole. Regular maintenance guarantees long mileage without breakdowns. In any case, only high-quality gasoline and proven engine oil are allowed to be used.

RB20DET often troit or won't start. The cause of the breakdown is a malfunction of the ignition coils. Coils are recommended to be changed every 100 thousand kilometers, which is not done by all motorists. Another disadvantage is the consumption of gasoline. In mixed mode, it reaches 11 liters per 100 km.

Maintainability and availability of spare parts

RB20DET can be not only repaired, but tuned. To improve the technical characteristics in the public domain there is all the necessary information. For example, the network has a pinout of the "brain" of the engine. It is also quite realistic, based on the information available on the Internet, to set up dpdz.

Maintainability is manifested in everything. For example, the drop resistor that comes with the stock version of the motor can be completely removed. In this case, the native injectors are replaced with an analogue from 1jz-gte vvti. GTE injectors do not require additional resistance. Moreover, the price of components is quite affordable.

If necessary, you can easily set the settings for kxx (idle valve). To do this, you need to warm up the car to 80 degrees Celsius, go to the Data Display section and click on active test, click on START (Base Idle Adjustment section). After you need to turn the adjusting bolt to 650 for an automatic transmission or up to 600 rpm for a manual transmission. Finally, in the Base Idle Adjustment section, click STOP and click the Clear Self Learn button in the active test.

Spare parts for RB20DET are almost always on sale. For example, a motor scythe is bought without problems, while it is quite difficult to get them for some other models. Also in large car services, in extreme cases, at disassemblies or in online stores, any repair kit is always available. No less available for sale pump gur and manual transmission.

Tuning the RB20DET by itself makes sense, as the engine has a margin of safety. Specifications are improved with a boost up. This feature distinguishes the internal combustion engine from the same RB20DE and RB20E. Installing on the latest improved camshafts and other parts is a waste of time.

The turbocharged RB20DET is widespread and sets off the swap by the wayside. For such a purpose, a stock turbine is not suitable, which is capable of delivering a maximum pressure of 0,8-0,9 bar. A similar turbocharger increases power to a maximum of 270 horsepower. For greater efficiency, other candles are installed, a pump from GTR, a boost controller, a direct-flow exhaust, a downpipe, a wastegate, a Skyline GTR intercooler, nozzles from RB26DETT 444 cc / min.

On sale you can find a ready-made turbo kit for a Chinese-made engine. Installed without any hassle. How much power does this unit produce? 350 horsepower, but with the caveat that the reliability of such a turbo kit is doubtful and most likely it will last for a short period of time.

Separate consideration is the increase in engine capacity from 2,05 liters to 2,33 liters. For this purpose, the cylinder block is bored up to 81 mm. After that, pistons from Toyota 4A-GZE are installed. After manipulations that are not so new from a technical point of view, the engine volume increases to 2,15 liters.

To get 2,2 liters, the block is bored to 82 mm, and Tomei pistons are installed. There is also an option using standard pistons. At the same time, connecting rods and crankshafts from RB25DET are installed. In this embodiment, the volume remains at the level of 2,05 liters.

When replacing pistons with 4A-GZE, the output is 2,2 liters. The volume increases to 2,1 liters when connecting rods and crankshaft from RB26DETT are installed. The additional use of 2,3A-GZE pistons will help increase the volume of such an engine to 4 liters. Tomei 82mm pistons and RB26DETT crankshaft connecting rods give a displacement of 2,33 liters.

ICE Theory: Nissan RB20DET Engine (Design Review)

What oil to fill in the engine

The manufacturer recommends using original Nissan 5W40 oil. In practice, the use of such a liquid allows you to keep the engine clean for a long time, helps to eliminate oil consumption and waste from its operation. It is also allowed to use synthetic oil with a viscosity of 5W50. Of the manufacturers, Liquid Molly (10W60) and Mobile (10W50) are sometimes recommended.

Cars on which the internal combustion engine was installed

brand, body	Generation	Years of production	Engine	Power, hp	Volume, l
Nissan Cefiro, sedan	first	1992-94	RB20DET	205	2
1990-92	RB20DET	205	2
1988-90	RB20DET	205	2
nissan fairlady z coupe	The third	1986-89	RB20DET	180	2
1983-86	RB20DET	180	2
Nissan Laurel, sedan	Sixth	1991-92	RB20DET	205	2
1988-90	RB20DET	205	2
Nissan Skyline, sedan/coupe	Eighth	1991-93	RB20DET	215	2
1989-91	RB20DET	215	2
Nissan Skyline, coupe	Seventh	1986-89	RB20DET	180 190	2
Nissan Skyline, sedan	Seventh	1985-89	RB20DET	190 210	2