M62B46
BMW M62B46 Engine
M62B46 Specs
| Manufacturer | BMW Plant Dingolfing |
| Also called | BMW M62 |
| Production | 2001-2003 |
| Cylinder block alloy | Aluminum |
| Configuration | V8 |
| Valvetrain | DOHC 4 valves per cylinder |
| Piston stroke, mm (inch) | 85 (3.35) |
| Cylinder bore, mm (inch) | 93 (3.66) |
| Compression ratio | 10.5 |
| Displacement | 4619 cc (281.9 cu in) |
| Power output | 255 kW (347 HP) at 5,700 rpm |
| Torque output | 480 Nm (354 lb·ft) at 3,700 rpm |
| Redline | 6,500 rpm |
| HP per liter | 75.1 |
| Fuel type | Gasoline |
| ECU | Bosch DME M7.2 |
| Weight, kg (lbs) | 208 (460) |
| Fuel consumption, L/100 km (mpg) -City -Highway -Combined |
for E53 X5 21.0 (11.2) 11.4 (20.6) 14.9 (15.8) |
| Turbocharger | Naturally aspirated |
| Oil consumption , L/1000 km (qt. per miles) |
up to 1.0 (1 qt. per 750 miles) |
| Recommended engine oil | 5W-30 5W-40 |
| Engine oil capacity, L (qt.) | 8.0 (8.45) |
| Oil change interval, km (miles) | 7,000-10,000 (4,500-6,000) |
| Normal engine operating temperature, °C (F) | ~105 (220) |
| Engine lifespan, km (miles) -Official information -Real |
– 400+ (250) |
| Tuning, HP -Max HP -No life span loss |
350+ – |
| The engine is installed in | BMW X5 E53 Alpina B10 V8 Alpina Roadster V8 E52 Morgan Aero 8 |
BMW M62B46 engine reliability, problems and repair
In 1999 BMW X5 E53 appeared, and it quickly won the reputation of a dynamic sport utility vehicle. The power of the standard BMW 4.4 engine M62B44 seemed not being enough for it. To make the car still more high-speed, Alpina company developed the new engine M62B46. It was constructed on the basis of the engine block M62B44. The diameter of its cylinders was expanded in 1 mm. Also the new crankshaft was installed there. Its piston stroke was enlarged to 85 mm, and Mahle pistons and modified rods were used. Besides, the cylinder head gaskets, inlet and outlet camshafts, the covers and the engine pan were replaced.
The specs of the stock camshafts of the M62B46 are the following: duration 249/249 deg, lift 10.5/10.5 mm. The diameter of the valves has remained the same: the inlet are 35mm, and the outlet are 30,5 mm. The engine control unit is Bosch DME M7.2.
This engine was used for the models BMW X5 E53, Alpina B10 V8/V8S E39, Alpina Roadster V8 E52 and Morgan Aero 8.
Later, just in two years since it was launched, the engine M62B46 was replaced with the new BMW N62B48.
BMW M62B46 (Alpina) engine problems and drawbacks
The motor M62 B46 may have the same malfunctions, advantages and shortcomings as 4.4-liter M62B44. You can read about all major problems HERE.
BMW M62 B46 engine tuning
The M62B46 Supercharger
Tuning M62B46 is similar to M62B44. Learn more detailed about it HERE.
