BMW S62B50 engine

In 1998, a series of upgrades led to the introduction of a new model, the 8-cylinder s62b50 gasoline engine. Unlike the earlier models, the BMW s62b50 uses a larger cylinder, its diameter is 94 mm. The piston stroke also differs in the unit, it is 89 mm. Such changes in the design of the model allowed to improve the final volume of the unit, which reaches 4941 cubic centimeters. The s62b50 also inherited a few familiar details. So, in it, as in other models of this engine, as well as the cylinder heads are made of aluminum.

If you pay attention to the technical characteristics of this motor, then immediately stands out from the general mass of several parameters. So, in addition to the volume, which is 4941 cubic centimeters, the engine is different:

• With horsepower levels going up to 400;
• 500 Nm of torque;
• Consuming only 95 gasoline;
• Fuel consumption is 21 liters in the city. But on the highway, such a motor
  consumes twice less, namely 10 liters. In case of a mixed cycle,
  gasoline consumption will be about 14 liters;
• High oil consumption. The passport of this unit states that
  it needs up to 1500 grams per thousand
  kilometers.

What is the resource of this unit in the passport is not specified, but as practice shows, it is easily able to pass more than 250 + thousand kilometers. If you study the s62b50 characteristics in detail, it will become clear that from this unit can be squeezed out not only 400 horses. In case of application of forcing the motor can eventually give out as much as 600 horsepower, and even more. The weight of this unit is 158 kg.

S62B50 engine specifications

Advantages

In BMW fifth series in contrast to previous models significantly differed from its predecessor much more impressive dimensions. Actually for this reason and began the development of a more powerful unit capable of showing high results. As a result, the developers came to the conclusion that it was time to use v8, and in the role of the basis for the development of motor S62B50 was used M62B44. The cylinder block was modified, the diameter of boilers was increased, and a crankshaft with a piston stroke of 89 mm was installed. Subjected to modification, the pistons were in order that the compression ratio in the engine was equal to eleven.

In the head of the block of cylinders, a three-layer gasket is used. All exhaust, as well as intake channels in this unit are subjected to increase. The valves with springs did not escape changes, instead of the usual elements, lightweight analogs were used. Since the engine has hydraulic compensators, there is no need to periodically adjust the valves.

A two-row timing chain is used in this unit. There is a very impressive parameters and receiver. It should be noted that in the motor of this model for each present cylinder is used a separate throttle. The exhaust has also been modified, which made it much better, but the brains have been added to the unit from Siemens.

Disadvantages

The breakdowns on this unit have a very high similarity to those present on the M62B44:

• The cooling system must be kept under control at all times to ensure that the unit always runs smoothly;
• If a different brand of gasoline is used, the owner of the motor will expect the appearance of knocks in the unit, leaks and failures in revolutions;
• After every 200,000 kilometers, the timing chain should be replaced. The chain starts to stretch after leaving this kilometer behind, which results in alarming sounds in the engine;
• After 200,000 km, elements such as the tensioner bar, chain or even the tensioner itself may fail. The Vanos system, which also has operating limitations, may also require replacement after this mileage;
• Leaks can also occur for a number of reasons, starting with valve cover failure and ending with the gasket installed in the intake manifold. In such situations, replacing the gasket may help to eliminate the leak. The pump can also cause leaks;
• RPM floating, often occurs due to the presence of air in the intake manifold or a broken air flow meter. It is not uncommon for RPM problems to be caused by a broken or clogged KVKG or throttle position sensors;
• An increase in oil is observed once the mileage goes beyond the 250,000 km mark. The oil consumption can be reduced by replacing the oil caps. The engine cushions must also be replaced after 200,000 km.

CHIP TUNING

Many reviews of owners of this unit, claim that it is possible to increase horsepower without much waste. It is enough just to purchase a sport exhaust, which does not have a catalytic converter, and make a cold intake and modify the program. Such changes will eventually lead to the fact that the unit will start to produce 25-25 hp more.

If additionally subjected to boring channels and replace the valves with enlarged, such changes will eventually contribute to the issuance of 480 horses.
There is also a second option to increase horsepower. For its realization it is necessary to buy a compressor. Now on sale there is a huge variety of them. Installed on the stock motor, you should blow in half a bar, as a result, the unit will begin to give out more than 550 hp.

Conclusion

Yes, such a unit has a good potential, but in operation it is characterized by capriciousness, like other large engines. Therefore, it constantly needs special care, good fuel and regular maintenance.

If these aspects are observed, the unit will last a long time.

This engine is installed on the following models:

BMW M5 (E39)