Mercedes-Benz M116 engine

Mercedes-Benz M116 Engine
File:M116.980 engine in 1969 Mercedes-Benz 280 SE 3.5 (US model).jpg 3.5 litre, US-spec M116.980 in a 280 SE 3.5 Coupé
Overview
Manufacturer	Mercedes-Benz
Production	1969–1991
Combustion chamber
Configuration	90° V8 engine
Displacement	3.5L 3.8L 4.2L
Cylinder block alloy	Cast iron 1969-1978 Aluminum 1978-1991
Cylinder head alloy	Aluminum
Valvetrain	SOHC
Combustion
Fuel type	Gasoline
Oil system	Wet sump
Cooling system	Water-cooled
Chronology
Predecessor	Mercedes-Benz M100 engine
Successor	Mercedes-Benz M119 engine

The Mercedes-Benz M116 was a series of Gasoline automotive V8 engine made by Mercedes-Benz between 1969 and 1991. All models were a Single overhead camshaft design with 2 valves per cylinder and featured Bosch Jetronic Fuel injection. These engines were introduced as smaller displacement alternatives to the Mercedes-Benz M117 engine, however they shared few common parts.

3.5

The original M116 engine 116.980 was introduced August 1969 in the 300SEL 3.5. It featured 9.5:1 compression with 200 PS (150 kW; 200 hp) @ 5800rpm and 286 N·m (211 lb·ft) @ 4000rpm. This was enough to propel the 1,575 kg (3,472 lb) saloon to a top speed of 200 km/h (124 mph). This engine and its twin, the 116.981 remained in production until 1980 when it was replaced by its larger 3.8 litre variant.

• Bore x Stroke: 92mm x 65.8 mm Displacement 3499cc

Usage

• 1971-1980 Mercedes-Benz C107
• 1971-1980 Mercedes-Benz R107
• 1969-1972 Mercedes-Benz W109
• 1970-1971 Mercedes-Benz W111
• 1973-1980 Mercedes Benz W116

3.8

The 116.960 engine was introduced in 1979 featuring 8.3:1 compression with 158 PS (116 kW; 155 hp) @ 4750rpm and 266 N·m (196 lb·ft) @ 2750rpm. This engine reached North America later for the 1981 380SL. There were 116.961, 116.962, and 116.963 versions of this engine. Early models came with a single row timing chain until 1983 and were plagued with chain failure problems which Mercedes-Benz would repair free of charge. All 1984+ models came with a double row timing chain from the factory to prevent this failure, however this engine was replaced for the 1986 model year by its larger 4.2 litre variant.

• Bore x Stroke: 88mm x 78.9mm Displacement 3818cc

Usage

• 1980-1982 Mercedes-Benz C107
• 1980-1985 Mercedes-Benz R107
• 1979-1985 Mercedes-Benz W126

4.2

The 116.965 engine was introduced in 1986 for the revised S-Class. It featured 9.0:1 compression and had from 204-231 PS (150-170 kW; 201-228 hp) depending on year and export market. All engines were mated to the Mercedes-Benz 4G-Tronic transmission. In North America, this engine was only used in 420SEL models featuring 204 PS (150 kW; 201 hp) @ 5200rpm and 310 N·m (229 lb·ft) @ 3600rpm. This engine was used until 1991 when it was replaced by the newer 4.2L Double overhead camshaft Mercedes-Benz M119 engine with which it shares no parts.

• Bore x Stroke: 92mm x 78.9mm Displacement 4196cc

Usage

• 1986-1989 Mercedes-Benz R107
• 1986-1991 Mercedes-Benz W126