BMW N20B20U0 engine

Let’s take a look at the technical specifications of this engine. It began production in 2011 and is still being released today. Aluminum cylinder block is perfectly combined with an injector as a power system and in-line. The number of cylinders and valves that come to these cylinders is equal – 4 pieces. The stroke of the piston here reaches an index of 90.1 millimeters, and the cylinder diameter is 84 millimeters. Depending on the situation, the compression ratio can be 10 or 11. The volume of the power unit is equal to 2 liters. But the power varies from 156 to 245 horsepower at 5000-5500 rpm. Maximum torque varies from 240 to 350 N*m at 1250-4800 rpm. As a fuel, it is best to use 95 or 98 grades of gasoline. There are also environmental standards Euro 5 and Euro 6.

Gasoline consumption in urban conditions is 8.8 liters per 100 kilometers, in mixed territory it decreases to 6.8 liters. But on the highway the consumption is 5.6 liters per 100 kilometers of distance. The oil is consumed in the amount of up to 700 grams per 1000 kilometers. In the engine should be present oil 5W-40 or 5W-30, and at the same time it should be about 5 liters. Replacement is best done once every 10 thousand kilometers. In practical conditions, the resource of the engine is more than 250 thousand kilometers. Tuning helps to increase its power over 300 horsepower in potential.

Engine specifications N20B20U0

Advantages

The turbine and in-line in this 4-cylinder engine began production as a replacement for its 6-cylinder predecessors. The aluminum alloy and two balance shafts make a single complete system that works consistently. Steel plating was used earlier, the crankshaft here is forged and has 4 counterweights with a main offset. The connecting rods here are a little bigger than before, but the piston pin offset is negative.

The head is very similar to the competition head, there is a system that changes the valve lift height. Also present is a system that changes the gas distribution phases on the exhaust and intake camshafts The camshafts are compound, and the fuel got direct intake. The turbocharged compressor is a twinscroll compressor that blows about 1.2 bar. The exhaust manifold has got excellent reliability and durability. The motor control system is used from a renowned developer. And also the power unit is installed on cars of the popular manufacturer at indices 25i, 20i, 28i.

Disadvantages

The engine vibrates. Most often the cause of such actions is a dirty injector, it must be checked, flushed or replaced in time.

The revolutions can often float. This problem most often begins after contamination of the idle valve and the throttle flap. Periodically it is necessary to inspect these parts and replace defective parts.

Increased consumption. Such problems occur due to a faulty air flow meter. When detecting inaccuracies in operation, you need to take appropriate measures to repair. For the engine is not recommended to change working fluids frequently or buy poor quality brands. It is necessary to fill only 98 grade gasoline in order to keep the engine running all the time. It is also necessary not to forget about the correct variants of oil, which is recommended by the developers themselves. The condition of the power unit should always be monitored by the driver, and maintenance should be applied in any case that requires it.

Modifications

•  The O01 was launched in 2011 and is still in production today. It is the base engine and the compression ratio here is 10 at 1.15 bar. The maximum output is 245 horsepower at 5,000 rpm. Maximum torque will be at 350 N*m at 1250-4800 rpm.
• The O02 was already produced from 2013 until now. It has an output of 238 horsepower at 5000 rpm. The maximum torque in this case is 350 N*m at 1250-4800 rpm.
• The M0 was produced from 2012 until now, and the compression ratio is back to 10. Maximum power reaches the mark of 218 horsepower at 5000 rpm. Maximum torque of this modification is at 310 N*m at 1350-4800 rpm.
• The U01 was released from 2011 until now and has an increased compression ratio of 11. The pressure here is available around 0.55 bar. The exhaust has been slightly reduced, allowing to show 184 horsepower of power at 5000 rpm. Maximum torque is available at 270 N*m at 1250-4500 rpm.
• The U02 was introduced later in 2013 and is still on the market. This motor is a bit weaker than the others and has a compression ratio of 10. The power only reaches the mark of 156 horsepower at 5000 rpm. Maximum torque is 240 N*m at 1250-4440 rpm.

Chip tuning

To improve the power output of this powertrain, you can opt for the first stage of tuning up to 280 horsepower and the second stage of flashing up to or over 300 horsepower. The latter also utilizes an intercooler, cold intake, and downpipe that will need to be swapped out with new quality parts. Tuning will spoil the machine very quickly, more often drivers turn to services after applying such improvements.

You can also put the usual firmware from other models of a famous developer. It will help to increase the power of the engine to 240-245 horsepower. Here, completely different pistons and a reduced compression ratio with a reduced exhaust will be applied. Therefore, to improve the parameters, it will be necessary to change the pistons for new ones, put a quality exhaust and add a cold intake with an intercooler. Then you can proceed to the second stage of flashing.

This engine is installed on the following models:

BMW 2-Series (F22)

BMW 2-Series (F23)

BMW X3 (F25)