Is the S50 or S52 better?
A big difference is the S50 has dual vanos system, S52 has a single vanos. Maybe specify which s50?!? There is a S50b30US, there is a s50b30 (european) and there is a s50b32 (european). but that can’t be the only reason the S50 is much more powerful.
What car did M50B25 come in?
The BMW M50 engine is the successor to the M20, and predecessor to the M52 engine. The M50 was used solely in the E34 520i and 525i, and the E36 320i and 325i. It is a straight six, or inline-6, coming in at either 2.0L (M50B20) or 2.5L (M50B25).
Are S52 engines reliable?
The real beauty of this engine comes from its potential and its stone cold reliability. The S52 is incredibly responsive to modifications. It has tremendous aftermarket support, and new owners will be happy to know that the modification path is well-established.
What is a M50 engine?
The BMW M50 is a straight-6 DOHC petrol engine which was produced from 1990 to 1996. It was released in the E34 520i and 525i, to replace the M20 engine. BMW M50 engine. Overview. Production.
How long do S52 Motors last?
The cast-iron block and strong bottom end can handle plenty of boost. To that end, stock or lightly modified S52s enjoy incredible longevity. It’s not unheard of to see these engines with over 200,000 miles on them with just routine maintenance.
What is the compression ratio of a S50B30 motor?
This motor had S50B30 US index and based on M50TUB25. The rods length of 135 mm, and the piston compression height of 32.8 mm, compression ratio decreased to 10.5. Cylinder head S50B30 US differs 2-Stage VANOS, camshafts (duration 252/244, lift 10.2/9.5 mm), the presence of hydraulic lifters.
What is the difference between S50 and S50B30?
The S50B30 rods have a length of 142 mm and increased their strength. The pistons were lighter, their compression height – 31.6 mm, and the compression ratio increased to 10.8. All this allowed to increase displacement to 3 liter. Modified the cylinder head in S50 was applied continuously variable valve timing system VANOS on the intake camshaft.
What are the problems with the BMW S50B30US engine?
The S50B30US version replaced by S52B32. Malfunctions of this engine are similar to all BMW M50. Such as overheating, oil consumption, periodic problems with VANOS, leaks, rough idle and other. The problem with misfire practically solved.
What is the redline of the S50B30 engine?
The S50B30 produces 210 kW (282 hp), has a bore of 86 mm (3.39 in), a stroke of 85.8 mm (3.38 in) and a compression ratio of 10.8:1. The redline is 7,200 rpm.