23-04-2021

Mercedes W123 Diesel 1976

Mercedes W123 Wagon
Mercedes Benz W123 Diesel
Mercedes W123 Turbo Diesel
Mercedes 300d 1976
Mercedes W123 Diesel
Mercedes W123 Diesel 1976 Convertible

Then, in 1976, the W123 models were launched (part of the brand’s “new-look” push). It was the first time a Mercedes-Benz had a friendly face, in comparison to their history to that point of technologically advanced but rather dour and stern-looking automobiles. The W123 was approachable, inviting, and just plain pleasant to look at. Soon, Mercedes was selling more diesel models than gas here in the States, and by 1982, the W123 was powered exclusively by diesel engines. Specification improved as pricing rose: Later cars had anti-lock four-wheel-disc brakes, driver's-side airbag, power locks, air conditioning and sunroof. The W123 model is a car manufactured by Mercedes Benz, with 5 doors and 5 seats, sold new from year 1976 to 1986, and available after that as a used car. How much horsepower does a 1976 Mercedes Benz W123 240 TD have? The 1976 Mercedes Benz W123 240 TD has 72 PS / 71 bhp / 53 kW horsepower. How much does a Mercedes Benz W123 240 TD weighs? Description YEAR: 1982 ENGINE: 2.4 MILEAGE: RHD/LHD: LHD GEARS: Manual FUEL: Diesel LOCATION: 428 Helen Street Govan Glasgow G51 3HR Vehicle Description The Mercedes-Benz W123 cars were produced by the German manufacturer from 1976 to 1985. The W123 models surpassed their predecessor, the W114/W115 "stroke-8". Rear-wheel drive powertrain “Mercedes W123” borrowed from the previous model: these are the petrol four-cylinder engines 2.0 and 2.3, the straight six-cylinder engine with a volume of 2.8 liters (including fuel injection), as well as four-cylinder and five-cylinder diesel engines of 2.0, 2, 2, 2.4 and 3.0 liters.The only new engine is the 2.5-liter petrol inline “six”.

(Redirected from Mercedes-Benz OM617)

Mercedes-Benz OM617 engine
Overview
Manufacturer	Daimler-Benz
Production	1974-1991
Layout
Configuration	Straight-5
Displacement	3.0 L (2,998 cc) 3.0 L (3,005 cc)
Cylinder bore	90.9 mm (3.58 in) 91 mm (3.58 in)
Piston stroke	92.4 mm (3.64 in)
Block material	Cast iron
Head material	Cast iron
Valvetrain	Chain drivenSOHC 10-valve
Compression ratio	21.0:1
Combustion
Turbocharger	Only on OM 617.95x
Fuel system	Indirect injection
Management	Bosch M or MW pump
Fuel type	Diesel
Oil system	Wet sump
Cooling system	Water-cooled
Output
Power output	80–230 PS (59–169 kW; 79–227 hp)
Torque output	168–250 N⋅m (124–184 lb⋅ft)
Chronology
Successor	OM602

The OM617 engine family is a straight-5diesel automobile engine from Mercedes-Benz used in the 1970s and 1980s. It is a direct development from the straight-4OM616. It was sold in vehicles from 1974 to 1991. The OM617 is considered to be one of the most reliable engines ever produced with engines often reaching over 1,000,000 km (620,000 mi) without being rebuilt and is one of the key reasons for Mercedes' popularity in North America in the 1980s, as it was powerful and reliable compared to other automotive diesels of the time. It is also a very popular choice for the use of alternative fuels, mainly straight or waste vegetable oil and biodiesel, although the use of these fuels may cause engine damage over time if not processed properly before use.

OM617 Naturally Aspirated[edit]

Essentially an OM616 with an extra cylinder, it debuted in 1974 with the W115(240 3.0d) chassis. Bore and stroke was 91 mm × 92.4 mm (3.58 in × 3.64 in). It was originally 80 PS (59 kW; 79 hp). Bosch MW inline injection pumps were used, which had flyweight governors and vacuum shutoff. Previous engines had used pneumatic governors, and 'gorilla knob' to start and shut off the engine. The North American engines had ADA device equipped pumps which limited fuel at high altitudes to prevent smoking with less dense air. New engine blocks after the .910 had rear mounted oil filter housings, with a combined full flow and bypass filter element. In August 1978 the precombustion chamber was updated to be similar to the new OM617A design for more swirl and more efficient combustion. The engine capacity was lowered to 3.0 L (2,998 cc) to satisfy engine displacement tax laws in Europe by changing the bore to 90.9 mm (3.58 in). September 1979 saw a new camshaft with greater valve lift let air and exhaust gases have less resistance. Power output rose to 88 PS (65 kW; 87 hp). Torque remained at 172 N⋅m (127 lb⋅ft) @ 2400 rpm.^[1] In November 1980 the MW style injection pump was replaced with the M type for non-North American engines. Engines were equipped with series wired loop type glow plugs up until 1980 when replaced by the much more reliable pencil type plugs (these had been already used in the OM617A since 1978). Vehicles sold to the North American market had exhaust gas recirculation equipment fitted.

OM617.910

Canister style oil filter at bottom front of engine. Power output was 80 PS (59 kW; 79 hp) @ 4000 rpm and torque was 172 N⋅m (127 lb⋅ft) @ 2400 rpm.^[2]

Applications:

1974-1976 240D 3.0 / 300D

OM617.912

This was introduced with the W123 series. Power originally was 80 PS (59 kW; 79 hp) @ 4000 rpm, torque 172 N⋅m (127 lb⋅ft) @ 2400 rpm. From September 1979 - 88 PS (65 kW; 87 hp) @ 4400 rpm, torque 172 N⋅m (127 lb⋅ft) @ 2400 rpm.

Applications:

1977-1985 300D
1977-1981 300D North American
1977-1985 300D Long
1977-1981 300CD North American
1978-1985 300TD

OM617.913

This was an adaption of the .912 to the T1 chassis. It had a downward facing oil filter housing.

1982–1988 209 D / 309 D / 409 D

OM617.931 and OM617.932

This engine was adapted from the .912 to fit the G Class,^[3] main difference being oil pan changes.

Applications:

Mercedes W123 Wagon

1979-1991 W460/W461

OM617A Turbocharged[edit]

The year 1976 saw the engine adapted to use a turbocharger. This 190 PS (140 kW; 187 hp) OM617LA was fitted to the C111-IID test vehicle, and set 16 world land speed and endurance records at the Nardo test facility in Italy. In 1978 the engine was upgraded again to 230 PS (169 kW; 227 hp) and installed in the C111-IIID and broke 9 further records.^[4] Modifications for production engines included oil squirters to cool the underneath of the pistons; pistons with oil passages; stronger connecting rods; sodium filled valve stems and a stronger nitride-hardened crankshaft. Also an uprated oil pump with separate chain drive was fitted as the turbocharger lubrication required higher flow. Bosch MW injection pumps were calibrated for greater fuel output and fitted with an ALDA device which prevented overfueling until the turbocharger had begun to provide boost pressure. Pencil glow plugs were provided on all OM617A engines.

OM617.950

In 1978, the OM617.950 was mated with the Mercedes-Benz W116 to produce the North American market-only 300SD, the world's first production turbodiesel sedan. These engines pre-dated the introduction of tighter emissions laws, so were not fitted with EGR. Power originally was 111 PS (82 kW; 109 hp) @ 4200 rpm, torque 228 N⋅m (168 lb⋅ft) @ 2400 rpm. From October 1979 - 121 PS (89 kW; 119 hp) @ 4350 rpm, torque 230 N⋅m (170 lb⋅ft) @ 2400 rpm.^[5]

Applications:

1978-1980 300SD Turbo

OM617.951

The .951 was introduced for 1981 and displaced 3.0 L (2,998 cc), using a 90.9 mm × 92.4 mm (3.58 in × 3.64 in) bore and stroke. Power originally was 121 PS (89 kW; 119 hp) @ 4350 rpm, torque 230 N⋅m (170 lb⋅ft) @ 2400 rpm. From August 1984 - 125 PS (92 kW; 123 hp) @ 4350 rpm, torque 250 N⋅m (184 lb⋅ft) @ 2400 rpm.^[6] Vehicles sold to the North American market had EGR equipment fitted.

Applications:

Mercedes Benz W123 Diesel

1981-1985 300SD Turbo
1981 300TD Turbo

OM617.952

Mercedes W123 Turbo Diesel

The .952 is identical to the .951 apart from minor changes to fit the North American 123 chassis. It was also fitted to the European market W123 wagon, the 300TD. This was the only turbocharged OM617 fitted to a European W123. Power originally was 121 PS (89 kW; 119 hp) @ 4350 rpm, torque 230 N⋅m (170 lb⋅ft) @ 2400 rpm. From October 1982 - 125 PS (92 kW; 123 hp) @ 4350 rpm, torque 250 N⋅m (184 lb⋅ft) @ 2400 rpm.^[7] Vehicles sold to the North American market had EGR equipment fitted.

Mercedes 300d 1976

Applications:

1981-1985 300D Turbo North American
1981-1985 300CD Turbo North American
1982-1985 300TD Turbo
Military Hagglund Bv206 Bandvagn

References[edit]