![]() ![]() The size of M50B20 injectors is 154 cc.Īt the same time M50B20 timing belt was replaced by timing chain with higher level of reliability and duration which is more than 150,000 miles (250,000 km) of mileage. Other differences include individual ignition coils, new pistons, new 135 mm lightweight connecting rods. Diameter of inlet and exhaust valves is 30 mm and 27 mm respectively. Specifications of M50B20 camshafts are as follows: duration – 240/228 deg, lift – 9.7/8.8 mm. In addition new motor was equipped by hydraulic lifters. It is equal to series of engines which include M50B24 – 2.4 L, S50B30 – 3.0 L, S50B32 – 3.2 L.Īt the same time new motor also had several innovations including new cylinder head, 24 valves and 2 camshafts. B20 is a 2.0-liter engine while B25 is 2.5-liter motor. The main difference between M50B20 and M50B25 is in their capacity. ![]() Normal engine operating temperature, ☌ (F)īMW M50B20 engine reliability, problems and repairīMW M50 series is equipped with the smallest straight 6-cylinder engine that was firstly introduced in 1990 and replaced the BMW M20B20. ![]()
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