| Mercedes-Benz M110 engine | |
| Manufacturer: | Mercedes-Benz |
| Production: | 1972 - 1986 |
| Configuration: | Naturally aspirated Straight-6 |
| Valvetrain: | DOHC 2 valves x cyl. |
| Displacement: | 2746cc |
| Bore: | 86mm |
| Stroke: | 78.8mm |
| Fueltype: | Gasoline |
| Fuelsystem: | Solex 4A1 carburetor Fuel injection |
| Oilsystem: | Pressure circulation |
| Coolingsystem: | Water cooled |
| Management: | Bosch Jetronic |
| Power: | NaN0NaN0 |
| Torque: | NaN0NaN0 |
| Compression: | 9.0:1 |
| Predecessor: | M180 |
| Successor: | M103 |
The M110 engine family is a DOHC (double overhead cam) crossflow cylinder head design with 2 valves per cylinder straight-6 automobile engine made by Mercedes-Benz in the 1970s and 1980s.
The M110.92x and .93x engines are carburetor engines, with Solex 4A1 carburetor.
The M110.98x and .99x engines are fuel-injected engines, with Bosch D-Jetronic up to the .983 and K-Jetronic from the .984.
All M110 engines have a displacement of 2746cc and a bore and stroke of NaNmm. Firing order is 1-5-3-6-2-4. Amount of coolant in the radiator was 11L from 1972 and 12L from 1980s and on. Amount of oil (lubricant) in engine was 6L. Lubrication system was pressure circulation lubrication system. Number of valves was 1 intake, 1 exhaust with V-shaped overhead configuration, acted by rocker arms. Valve operation was 2 top camshafts and camshaft drive was duplex roller-type chain.
The M110 .92x and .93x carburetor engines were replaced by the SOHC 2.6L M103 while .98x and .99x fuel-injected engines were replaced by 3.0L M103 starting in 1986.
The .931 is the low-compression version of the .921.
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The .932 is the low-compression version of the .922.
Power output of .922: 1180NaN0 at 5500 rpm.
Power output of .932: 1070NaN0 at 5500 rpm.
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Power output: 1150NaN0 at 5500 rpm, or 1050NaN0 at 5500 rpm for the low-compression version.
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Power output: 1150NaN0 at 5500 rpm, or 1050NaN0 at 5500 rpm for the low-compression version.
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Power output: 1150NaN0 at 5500 rpm, or 1050NaN0 at 5500 rpm for the low-compression version.
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The M110.981 uses Bosch D-Jetronic injection. This system senses the ambient temperature, engine temperature, intake manifold underpressure and throttle valve position and calculates with an analog computer how many milliseconds the fuel injectors should stay open per revolution.
The .991 is the low-compression version of the .981.
Power output of .981: 1360NaN0 at 6000 rpm and 1760NaN0 of torque at 4500 rpm.
Power output of .991: 1250NaN0 at 6000 rpm.
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The .992 is the low-compression version of the .982.
Power output of .982: 1360NaN0 at 6000 rpm.
Power output of .992: 1250NaN0 at 6000 rpm.
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The .993 is the low-compression version of the .983.
Power output of .983: 1360NaN0 at 6000 rpm.
Power output of .993: 1250NaN0 at 6000 rpm.
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The M110.984 was the first engine with the new Bosch K-Jetronic injection. This system is mechanical. The air that is taken in is weighed to then determine the amount of fuel to inject.
Power output: 1300NaN0 at 6000 rpm up to April 1978; 1360NaN0 at 5800 rpm from April 1978.
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Power output: 1320NaN0 at 6000 rpm up to April 1978; 1360NaN0 at 5800 rpm from April 1978.
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Power output: 1320NaN0 at 6000 rpm up to April 1978; 1360NaN0 at 5800 rpm from April 1978.
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Power output: 1360NaN0 at 5800 rpm.Maximum torque: 2400NaN0 at 4500 rpm.Compression ratio: 9.0:1
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Maximum output was 1360NaN0 at 5800 rpm
Maximum torque was 2400NaN0 at 4500 rpm
The compression ratio was 9.0:1.
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Power output: 1360NaN0 at 5800 rpm.
Maximum torque: 2400NaN0 at 4500 rpm.
The compression ratio: 9.0:1.
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Power output: 1360NaN0 at 5800 rpm.
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This engine was specifically produced for the G-Class Geländewagen. It has a low compression ratio. It uses K-Jetronic.
Power output: 1150NaN0 at 5250 rpm up to 1984; 1100NaN0 at 5250 rpm from 1984.Torque: 2260NaN0 at 4250 rpm.
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Own tuning version of the 2.7-liter M110 engine was presented at the end of the 70s by the then independent AMG division for the W123 models (sedan, coupe and station wagon) and W116 in long and short body versions. After modifications by specialists from Affalterbach, the power of naturally aspirated engine increased from the standard 1360NaN0 and 2400NaN0 of torque up to 1560NaN0 and 2550NaN0.
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