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About The BMW M50 Engine
The straight six-cylinder petrol engines of the M50 family replaced the M20 engines in 1990. They were produced until 1995, when they were replaced by M52 engines .
The main difference between the M50 engine and its predecessor is the cylinder head, which has four valves per cylinder and two camshafts . In this regard, BMW engineers have achieved better filling and as a result – the best power characteristics of the motor in the upper speed range, sacrificing torque at low revs.
The timing belt drive M20 was replaced in the M50 with a chain engine, which increased the reliability of the engine. The cylinder block was made of cast iron. The center distance of the cylinders at the block M50 and M20 are the same.
BMW produced the following modifications of M50 engines:
| Modification | Bore | Piston stroke | Engine capacity, | Power | Power, | Torque, | Maximum |
|---|---|---|---|---|---|---|---|
| engine | mm | mm | cm³. | compression | hp | Nm | rev / min |
| M50B20 | 80 | 66 | 1991 | 10.5: 1 | 150 at | 190 when | 6500 |
| 5400 rpm | 4300 rpm | ||||||
| M50B20TU | 80 | 66 | 1991 | 11:01 | 150 at | 190 when | 6500 |
| VANOS | 5300 rpm | 4200 rpm | |||||
| M50B25 | 84 | 75 | 2494 | 10:01 | 192 at | 245 at | 6500 |
| 5400 rpm | 4300 rpm | ||||||
| M50B25TU | 84 | 75 | 2494 | 10.5: 1 | 192 at | 245 at | 6500 |
| VANOS | 5400 rpm | 4200 rpm |
M20B25 – the predecessor of the M50
Since September 1992, MAN’s engines began installing the VANOS proprietary variable valve timing system. This system receives commands from the engine control unit (ECU). By means of a solenoid valve, the computer opens the oil channel through which the oil acts on the mechanism, which changes the position of the intake camshaft, under pressure. This allowed to increase torque at low revs, reduce fuel consumption and allowed to compensate for the reduced efficiency of the M50 engine (unlike the M20) in the lower engine speed range.
M50 engines have proven themselves as reliable and powerful engines. They were installed on the following models: 320 E36, 325iS E36, 325 E36 , 520 E34 , 525 E34.
Also modified M50 engines were installed on the BMW Alpina B3 E36, had a volume of 2979 cm ³ and power 250 liters.
On the basis of the M50 engine, BMW Motorsport GMBH has developed sports engine modifications for M-series cars. They were labeled S50B30 and S50B32.
The injection control system of the M50 engine does not yet have a CAN bus, which makes it possible to read and reset ECU errors on the K-Line.
Past M50 Engine Enquiries
Date | Name | City | Year / Model | Engine-Size | Engine Code | Requirements |
|---|---|---|---|---|---|---|
2020-02-15 14:54:33 +02:00 | Suhla | Secunda | 1995 | 325i E36 | M50B25 | Hello, kindly give me a price on an engine BMW 325i E36 Non Vanos if possible please. Regards Suhla |
2020-01-06 09:21:53 +02:00 | BEN DU PLESSIS | WELKOM | 2.8 crd VM50C ENG | VM50C | NEW OR RECON ENGINE BLOCK AND HEAD JEEP LBERTY 2.8 CRD VM50C ENGINE | |
2019-12-19 12:52:37 +02:00 | Anele | Queenstown | 2013 | 1.2 | G4LACM957321 | I'm looking for Hyundai i20 engine 1.2 motion 2013 model. |
2019-10-29 09:28:13 +02:00 | Shaun | Witbank | e36 | 328i | M50 | looking for an engine. |
2019-10-01 18:55:59 +02:00 | محمد | Cairo | 1996 | 2800 | Very Important! (Found On Your License Disc) | How much |
2019-10-01 15:24:56 +02:00 | Mohau | Warrenton, northern Cape | 2013/ clio 4 | 1.2 petrol | 84BA | looking for a secondhand engine. |
2019-08-05 12:59:23 +02:00 | Floriano | Jhb | 1999 e36 | 328i | Need a head for 328i | |
2019-08-05 12:58:37 +02:00 | Floriano | Jhb | 1999 e36 | 328i | Need a head for 328i | |
2019-07-25 08:33:37 +02:00 | thalitha | jhb | 1994 | m50 | hi, i am looking for a m50 525 / 325 engine | |
2019-07-16 10:48:48 +02:00 | matheus | windhoek | 1999 to 2007 | m5 -- e34 | bkp232825 | urgent |
2019-06-26 14:55:10 +02:00 | Edison | Nelspruit | 1994 | 250 | M50b25 | Looking for bmw m50b25 non vanos |
2019-06-19 11:12:59 +02:00 | Elvis | Mikkeli | 1991 | 2.5 | Looking for m50b25 engine for 520 e34 1991 | |
2019-04-15 23:37:39 +02:00 | Daan | Jhb | 2009 | 2.8 | Vm50C05932 | Engine for jeep wrangler 2.8 crd 2009 model! |
2019-03-30 12:58:16 +02:00 | Jacob | Gettysburg | M50b25 | I’m looking for the engine and manual transmission. | ||
2019-03-23 15:37:20 +02:00 | Colin | Dublin Ireland | 1993 | 2.5 | M50B25 | I am looking for an engine & manual gearbox & running gear to suit an E36 BMW Saloon |
2019-03-21 04:29:01 +02:00 | Bill Sharp | Albuquerque | 1992 | M50 | Looking for a good BMW M50 Engine to place in my 1992 BMW 525i E34 Touring. | |
2019-03-11 09:07:47 +02:00 | Dillon | E34 | 2500 | Looking for a complete M50b25 engine and gearbox to be shipped to Sri Lanka | ||
2019-02-15 12:00:03 +02:00 | Sboniso | Johannesburg | 1990 - 1996/ M50 | 2.8L / 328i | looking for a complete engine. | |
2019-02-02 04:20:29 +02:00 | Thabo | Bloemfontein | 1991 | 320i | M50B20 | I need a complete engine for BMW E36 320i |
2018-12-27 14:34:10 +02:00 | Norman | Nelspruit | m50 | complete used engine. | ||
2018-12-11 20:47:46 +02:00 | gary | EAST LONDON | 1992 | 2.5 | m50b25 | Hi looking for a BMW M50 2.5 CYLINDER HEAD COMPLETE |
2018-11-30 08:59:09 +02:00 | Noorodeen | Pretoria | m50b25 | Need m50b25 the one without VANOS | ||
2018-11-19 20:21:15 +02:00 | Dewald van den Heever | Pretoria | 1994 | 325i | M50TUB25 | Building a Race Car and looking for available spares, let me know what you have available and at what price. |
2018-08-06 22:10:55 +02:00 | Arvin | 2015 | X5/X6 M50d | Hi Im looking to purchase an X6 M50D (F16) engine. Please advise on pricing Thanks | ||
2018-07-22 14:44:47 +02:00 | Etienne Strydom | Johannesburg | Pasat | 2.0 | 35i | Hi can you find me one recon motor |