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Overview

mercedes-benz m102

The M102 engine family is a inline-four gasoline automobile engine family built by Mercedes-Benz in the 1980s and early 1990s. It is a relatively oversquare engine with a large bore and short stroke compared to the M115 engine which was used during the same timeframe.
Used in the W201 190E 1. 8 from 1990 onwards. Cubic capacity: 1,797 cc. Power output: 80 kW. Torque: 154 N⋅m
Used in the W201 190E 1. 7 from May 1992 onwards for export to Portugal only. Cubic capacity: 1,737 cc. Power output: 77 kW at 5500 RPM. Torque 148 N⋅m at 3700 RPM....

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technical specifications

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General

engine brand: mercedes-benz
production years: 1980-1993
engine lifespan: ~400 000
features: no

piston

Power and torque

power: 109 (M 102 E 18)
86 – 122 (M 102 E 20)
95 – 136 (M 102 E 23)
torque: 150 (M 102 E 18)
165 – 178 (M 102 E 20)
170 – 205 (M 102 E 23)

gas-pump

Fuel

fuel system: KE-Jetronic (M 102 E 18)
carburetor / Jetronic (M 102 E 20)
carburetor / Jetronic (M 102 E 23)
fuel type: petrol
euro standards: EURO 0/1

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Timing

timing drive: chain
hydraulic lifters: yes (M 102 E 18)
after 1984 (M 102 E 20)
after 1984 (M 102 E 23)
phase regulator: no

engine-oil-level

Oil

recommended engine oil: 5W-40
engine oil capacity: 5.0 (M 102 E 18)
4.5 / 5.0 (M 102 E 20)
4.5 / 5.0 (M 102 E 23)

turbocharger

Displacement and turbo

displacement: 1797 (M 102 E 18)
1996 / 1997 (M 102 E 20)
2298 / 2299 (M 102 E 23)
compression ratio: 9.0 (M 102 E 18)
8.0 – 9.0 (M 102 E 20)
8.0 – 9.0 (M 102 E 23)
turbocharging: no

height

Dimensions and measurements

weight: 165
cylinder bore: 89 (M 102 E 18)
89 (M 102 E 20)
95.5 (M 102 E 23)
piston stroke: 72.2 (M 102 E 18)
80.2 / 80.25 (M 102 E 20)
80.2 / 80.25 (M 102 E 23)

engine

Engine block

cylinder block: cast iron R4
block head: aluminum 8v