BMW M60B40 engine

Let’s take a closer look at the technical characteristics of the M60B40. Production of BMW M60B40 engine began in 1992, and in 1998 it came to its logical conclusion. The material for the cylinder block was again aluminum, and the injector power system allowed to adjust the work of the power unit. The V-shaped construction was no surprise to anyone, eight cylinders made it possible to feel the power of the M60B40 engine every time. Each of these cylinders had four valves, which consistently performed their work. The piston stroke here was exactly 80 millimeters, but the cylinder diameter increased to 89 millimeters. The compression ratio of 10 helped to realize all tasks. The volume of this engine is equal to 4.0 liters. Its power at 5800 rpm will be 286 horsepower. And here the maximum torque is exactly 400 N*m at 4500 rpm, which can not but please drivers.

The developers recommend using a minimum of 95 grade of gasoline as fuel. Also, Euro 1 environmental standards are set here. This unit weighs about 200 kilograms, which allows the car to be light. Fuel consumption of the M60B40 per 100 kilometers in highway conditions is equal to 9.2 liters, in mixed territory this figure increases to 11.8 liters. And in the urban routine, the engine takes 18.1 liters of fuel per 100 kilometers. Oil is consumed at a rate of less than 1000 grams per 1000 kilometers.

The manufacturer allows the use of 10W-40, 5W-40, 15W-40, 5W-30 oil. There are about 7.5 liters of oil in the engine at the same time. It should be changed once every 7-10 thousand kilometers. The M60B40 engine has an operating temperature that ranges from 95 to 100 degrees. Its resource in practical conditions reaches more than 300 thousand kilometers. Stroker kit and standard kit can be made much more powerful, provided that the entire tuning alogrithm is performed, drivers can achieve potentially more than 400 horsepower. The reliable BMW E34 M60B40, E38 M60B40 or E28 engine works well on cars from the famous manufacturer. In addition, it is also installed on cars with the 540i, 740i, 840i or De Tomaso index.

M60B40 engine specifications

Disadvantages

The car with this engine often shakes very often at idle speed. This problem is often quickly solved by simply adjusting the throttle timing. You can also check the compression, crankcase gas recirculation valve or lambda probes. Many drivers wonder how much the BMW M60B40 piston should drink. This figure varies depending on the mileage and the serviceability of all systems. Underhood wiring M60B40 E34 sometimes burns out, so that this does not happen, you need to service the machine in time.

Oil goes out very quickly. To solve this malfunction, most often you just need to replace the HVAC or the removable oil caps and rings. If the cylinders are worn out, then changing the block or doing a proper liner is obviously not superfluous. The M60B40 E34 in the cabin stinks of exhaust fumes. This is evidenced by many reviews of M60B40.

If the fuel quality is poor the nikasil blocks will quickly lose their reliability, they will wear out and no longer have the compression that they did in the beginning. So alusil liners would be a much better buying decision. The engine is a bit expensive to maintain and fuel consumption is unreasonably high here. Age and high mileage with frequent use will also not inspire confidence when first used. The BMW M60B40’s BMW M60B40 coolant temperature sensor and parts on the chip wear out frequently.

Technology

The motor was born in 1992 and replaced several powerful predecessors at once. Initially it was made for large sedans, coupes, this time the power unit began to meet more often and in sports coupes, it often closes a large gap between motors that are arranged in a row and have 6 cylinders and huge engines with twelve cylinders and V shape. This solution with 4 liters was a real breakthrough in the powertrain market. The Schrick sport camshafts were a real breakthrough for this model.

The cylinder block here has a right angle of camber, also present here are the liners, which again have a nikasil coating. A forged crankshaft completes this picture and system. The block in 1994 started to be made of alusil, which is more reliable.  The heads on the block were made of aluminum and had two camshafts each. Four valves per cylinder and hydraulic compensators helped with all the problems. The M60B40’s intake valve diameter and exhaust valves were slightly larger. The phase and lift of the standard camshafts were changed slightly, giving the M60B40 improved performance.

The M60B40 Turbo engine often featured unique ignition coils and a plastic intake manifold. The intake manifold on the M60B40 received a new form and function. The timing chain here had two rows, and its resource ranged from 200 to 250 thousand kilometers. As a control system, the latest part from the famous developer Bosch was used. Cars that have an index 40i, still meet with this unit. And already in 1996, the engine was replaced by a new one with improved parameters. Motorists evaluate the above-described motor as good. Swap and MKPP remained the same, but reliable.

Modifications

For this power unit in the development was not provided for the production of modifications. It in its standard variant displaced the previous leaders from the automobile market, but the motor did not manage to gain a foothold for a long time, because after 6 years of production it left the general market and began to meet less and less often with drivers around the world.

Chip tuning

But how can you tell the difference between an M60B30 and an M60B40? The latter motor can use a huge number of sports shafts with different parameters and cost. Supercharger needs no introduction and perfectly fulfills all its duties. To add a few tens of horsepower to the engine, you need to buy shafts for tuning. In this case, 272/258 with increased lift can be useful. Such an adaptation of the M60B40, along with a cold intake and exhaust in the form of a sports part, will help add about 50 horsepower to the total output. By installing stiffer shafts and porting the cylinder head, you can get a couple dozen more horsepower. But in the second case the car will turn into uncomfortable for the city and neighborhood.

Another not bad solution, which can significantly improve the performance of the machine, can appear along with the purchase of a whale compressor. ESS after Vortech will be a great solution, complete with a modern pump from the famous manufacturer Bosch. Standard piston should be used in this case by default, other options will only spoil the characteristics. Such a set will be able to achieve a pressure of half a bar, and this will help to achieve a result of more than 400 horsepower. This option is quite interesting and its price will be quite a bit higher than the previous one with atmospheric inclusions.

This engine is installed on the following models:

BMW 5-Series (E34)

BMW 7-Series (E38)

BMW 7-Series (E32)

BMW 8-Series (E31)