|BMW M60 engine|
|Predecessor||BMW OHV V8|
To reduce weight, the engine uses aluminum for both the engine block and cylinder head, and a plastic intake manifold. Nikasil plating is used for the cylinder liners (see below). The sintered connecting rods were made as a single piece and then fractured in order to ensure a closer fit. Total dry weight of the engine is 203 kg (448 lb).
The M60 engine has four valves per cylinder and double overhead camshafts, driven by a dual-row timing chain. Valves had hydraulic lash adjustment to reduce maintenance, and the camshaft chain drive was self-adjusting. There was no distributor, each cylinder having its own ignition coil. Fuel injection and ignition are controlled by the Bosch Motronic 3.3 system.
The M60 was offered in two sizes: the 3.0 L M60B30 and the 4.0 L M60B40. citation needed][
|M60B30||3.0 L (2,997 cc (183 cu in))||160 kW (218 PS; 215 hp) @ 5800||290 N·m (214 lb·ft)) @ 4500||6500||1992|
|M60B40||4.0 L (3,982 cc (243 cu in))||210 kW (286 PS; 282 hp) @ 5800||400 N·m (295 lb·ft)) @ 4500||6500||1992|
The M60B30 has a bore of 84 mm (3.3 in) and a stroke of 67.6 mm (2.7 in), for a displacement of 2,997 cc (183 cu in). Compression ratio is 10.5:1, giving an output of 160 kW (218 PS; 215 hp) at 5800 rpm and 290 N·m (214 lb·ft) at 4500 rpm.
The M60B40 has a bore of 89 mm (3.5 in) and a stroke of 80 mm (3.1 in), for a total displacement of 3,982 cc (243 cu in). Compression ratio is 10.0:1, giving 210 kW (286 PS; 282 hp) at 5800 rpm and 400 N·m (295 lb·ft) at 4500 rpm. It had a forged crankshaft.
- 1993-1995 E34 540i
- 1992-1994 E32 740i
- 1994-1996 E38 740i
- 1992-1996 E31 840i
- 1993-1998 De Tomaso Guarà
Nikasil damage from high-sulfur fuels
BMW used Nikasil- an aluminium, nickel, and silicon alloy- to line the cylinders of the M60 engines. In fuels with high sulfur content (such as used fuels sold in the USA, UK and South America), the sulfur damages the Nikasil bore lining, causing the engine to lose compression.
- "Tier 2 Vehicle & Gasoline Sulfur Program | US EPA". Epa.gov. Archived from the original on 26 October 2010. Retrieved 2010-11-06.
- Published: 12:00AM GMT 11 Nov 2000 Comments (2000-11-11). "No fuel like a low-sulphur fuel". Telegraph. Retrieved 2010-11-06.
- http://www.usautoparts.net/bmw/engines/nikasil.htm details of the Nikasil problem
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