BMW M62 - WikiHQ

BMW M62 is a naturally aspirated V8 petrol engine which was produced from 1995 to 2005. A successor to the BMW M60, the M62 features an aluminium engine block and a single row timing chain.

In 1998, a technical update included VANOS (variable valve timing) for the intake camshafts.

A BMW M high performance version of the M62, called the S62 engine, was fitted to BMW's E39 M5 and BMW Z8, and both the Ascari KZ1 and Ascari A10.

Design

Like the BMW M60 engine it replaced, the M62 is a DOHC engine with four valves per cylinder, an aluminum block and aluminum heads. The M62 has fracture-split forged connecting rods, hypereutectic pistons with ferrous coated side skirts. Most of the M62 engines used Alusil for the block material, however some early M62 engines used Nikasil cylinder coating instead.

Alusil technology integrates silicon throughout the aluminum cast so that liners or treated bores within this block family are not needed.

The M62 uses a Bosch Motronic 5.2 engine control unit (also called "DME") and a hot wire MAF.

Technical Update

In 1998, a "Technical Update" was applied to the M62, resulting in the M62TU variants. New features include single-VANOS (variable valve timing for the intake camshaft) and electronic throttle control. The engine management was updated to Motronic ME7.2.

Versions

Figures specified are for European models.

{|class="wikitable sortable" style="text-align: center;"

!Version !! Displacement !! Power !! Torque !! Redline !! Year

!M62B35

|rowspan=2| 3,498 cc || at 5,700 rpm || at 3,300 rpm ||rowspan=2| 6,200||1996

! M62TUB35

|| at 5,800 rpm || at 3,800 rpm || 1998

!M62B44

|rowspan=2| 4,398 cc || at 5,700 rpm || at 3,900 rpm || rowspan=2| 6,100 || 1996

!M62TUB44

|| at 5,400 rpm || at 3,600 rpm || 1998

!M62TUB46

|rowspan=3| 4,619 cc || at 5,700 rpm || at 3,700 rpm ||rowspan=4| 6,500 || 2001

!Alpina F3

|| at 6,000 rpm || at 3,700 rpm

|1996

!Alpina F4

|| at 6,000 rpm || at 3,700 rpm

|2000

!Alpina F5

| 4,837 cc || at 6,000 rpm || at 3,700 rpm

|2002

!S62B50

| 4,941 cc || at 6,600 rpm || at 3,800 rpm || 7,000 || 1998

!Racing Dynamics R52

| 5,161 cc || at 6,400 rpm || at 3,900 rpm

|7,200|| 2001

M62B35

The M62B35 has a bore of and a stroke of .

1996–1998 BMW 5 Series (E39) 535i
1996–1998 BMW 7 Series (E38) 735i/735iL

M62TUB35

In 1998, the Technical Update was applied, resulting in the M62TUB35.

1998–2003 BMW 5 Series (E39) 535i -

M62B44

The M62B44 has a bore of and a stroke of .

Applications:

2002–2004 BMW X5 (E53) X5 4.6is

Alpina F3

The Alpina F3 was developed by Alpina and based on the M62B44 engine. Released late in 1996 it used a modified M62B44 block supplied to Alpina from BMW featuring a bore of 93mm. It also featured a modified cylinder head, different intake camshafts, a crankshaft with increased stroke along with different pistons, a different air intake manifold and exhaust manifolds as well as custom engine programming.

It has a bore of and a stroke of .

Applications: It has a bore of and a stroke of .

Applications: The redline is 7000 rpm. The bore and stroke are and respectively. This results in a displacement of , compared with the of the largest M62 engine at the time.

Other differences compared to the M62 include:

Individual throttle bodies for each of the eight cylinders, and have driver-selectable "normal" and "sport" mode throttle response.
Compression ratio is 11.0:1, compared with 10.0:1 for the M62
A double-row timing chain, compared with the single-row chain used by the M62
Hollow camshafts.
A semi-dry sump oil system, consisting of two additional scavenging pumps which activates during hard cornering

Like the M62, the S62 has an aluminium block and head. The S62 was assembled at BMW's Dingolfing plant.