BMW M52B20 Engine: Specs, Problems, Reliability, & More. The M52B20 is a two-liter inline 6-cylinder engine. It was launched in 1994 and comes from M52-series which likewise includes the M52B24, M52B25, M52B28 and S52B32 engines. The new engine appeared to replace the old but still popular M50B20 engine.
The cyndrical tube block is made entirely of light weight aluminum alloy with Nikasil layer on bore-liners. The engine got brand-new pistons and also attaching poles (the length is 145mm). The M52B20 head is light weight aluminum DOHC 32-valve, which is popular as M50B20TU cylinder head. The engine first of all has the variable timing system VANOS on consumption camshaft only, and also easy consumption manifold made from plastic. The engine makes use of 154 cc fuel nozzles.
After 1998 the engine obtained the new name – M52TUB20. There are cast iron sleeves inside brand-new aluminum cylinder block. Linking rods, pistons, cooling down system, whatever was redeveloped for this engine. Currently this updated version has Double-VANOS system, variable geometry consumption manifold called DISA and also electronic throttle body. M52TUB20 camshaft specs: duration 244/228 deg, valve lift 9.0/ 9.0 mm.
The M52B20 was replaced in 2000 by its follower from M54-series – 2.2-liter M54B22 engine.
M52B20 Engine Issues and also Reliability
The engine does not have distinct troubles, just those are featured M52-series. Locate extra info concerning them in M52B28 engine evaluation.
- Manufacturer: Munich Plant
- Production years: 1994-2000
- Cylinder block material: Aluminum
- Cylinder head material: Aluminum
- Fuel type: Gasoline
- Fuel system: Fuel injection
- Configuration: Inline
- Number of cylinders: 6
- Valves per cylinder: 4
- Valvetrain layout: DOHC
- Bore, mm: 80.0
- Stroke, mm: 66.0
- Displacement, cc: 1991
- Type of internal combustion engine: Four-stroke, naturally aspirated
- Compression Ratio: 11:1
- Power, hp: 148 hp /5,900 (and TU version)
- Torque, lb ft: 140 lb-ft (190 Nm)//4,200 – 140 lb-ft (190 Nm)//3,500 (TU)
- Engine weight: –
- Firing order: 1-5-3-6-2-4
- Engine oil weight: 0W-30, 0W-40, 5W-30, 5W-40
- Engine oil capacity, liter: 6.5
- Oil change interval, mile: 6,000 (10,000 km) or 12 month