BMW M62B35/M62TUB35 Engine


  1. Specifications
  2. Overview, problems
  3. Performance tuning

M62B35 Specs

Manufacturer  BMW Plant Dingolfing
Also called BMW M62
Production 1996-2003
Cylinder block alloy Aluminium
Configuration V8
Valvetrain DOHC
4 valves per cylinder
Piston stroke, mm (inch) 78.9 (3.11)
Cylinder bore, mm (inch) 84 (3.31)
Compression ratio 10
Displacement 3498 cc (213.5 cu in)
Power output 173 kW (235 HP) at 5,800 rpm
180 kW (245 HP) at 5,800 rpm (TU)
Torque output 320 Nm (236 lb·ft) at 3,300 rpm
345 Nm (254 lb·ft) at 3,300 rpm (TU)
Redline 6,200 rpm
HP per liter 67.2
70 (TU)
Fuel type Gasoline
ECU Bosch DME M5.2
Bosch DME M7.2 (TU)
Weight, kg (lbs)
Fuel consumption, L/100 km (mpg)
-City

-Highway
-Combined
for E38 735i
17.0 (13.8)
9.1 (25.8)

12.0 (19.6)
Turbocharger   Naturally aspirated
Oil consumption , L/1000 km
(qt. per miles)
up to 1.0
(1 qt. per 750 miles)
Recommended engine oil 0W-30
0W-40
5W-30
5W-40
Engine oil capacity, L (qt.) 7.5 (7.9)
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

400+

The engine is installed in BMW 535i E39
BMW 735i E38

BMW M62B35 engine reliability, problems and repair

The recent version of the engines BMW M62 V8 was produced in 1996 to replace the M60B30. The engine M62B35 was made on the base of the M62B44. Short stroke crank was installed into its cylinder block, and the diameter of the cylinders was diminished to 84 mm. The sleeves remained nikasil, and since 1998 nikasil has been replaced with alusil. The updated engine M62B35 has some difference from its predecessor. The new pistons were applied, while the metal-ceramic piston rods remained the same.

The heads of cylinder blocks were somewhat updated. The camshafts changed: duration 236/228 deg, lift 9/9 mm. Also valve-spring retainer and springs were relieved. The valves have remained the same as on the M60: the diameter of the inlet valves – 32 mm, of the exhaust – 28.5 mm. The valve covers are made of magnesium. Timing chain is single-strand. Its average service life is 90,000 – 120,000 miles (150,000 – 200,000 km) of mileage. The new throttle body were also used, and the intake manifold was upgraded. The ignition coils are similar to the ones of the BMW M52. The programmed thermostat was applied also. The engine control unit is Bosch DME M5.2. BMW M62 B35 fuel injector size – 191 cc.
In 1998 the engine was somewhat upgraded and got the name M62TUB35. Its main innovations are the following: the variable valve timing system VANOS on the inlet camshaft, the new intake manifold with narrow ports, an electronic throttle body, and also the engine control unit Bosch DME M7.2.
The engines M62B35 and M62TUB35 were used for the models BMW 35i.
In 2001 the engine M62B35 was substituted by N62B36, and within two years it completely replaced 3.5-liter M62.

BMW M62B35 engine problems and drawbacks

The possible main problems and malfunctions of the engine M62B35 are similar to the elder version M62B44. You can read about them HERE.

BMW M62 engine tuning

The M62B35  Turbo. Supercharger

Tuning M62B35 does not differ from the upgrade M62B44 anyhow. You can read about this in detail HERE. As a result of intervention into M62B35, its capacity is certainly less, than the one of the 4.4-liter M62B44 with the similar mods.

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