Mercedes-Benz M102 engine


The M102 engine family was a straight-4 gasoline automobile engine from Mercedes-Benz in the 1980s and early 1990s. It is a relatively oversquare engine with a large bore and short stroke compare to the M115 engine which was used during the same time frame.

M102.910

Used in the W201 190E 1.8 from 1990 onwards.
Cubic capacity:
Power output: Torque:
Applications:
The M102.920 was a 2.0 L engine with an bore and stroke. Equipped w/ carburettor 175 CDT. Cubic capacity: Power output:. Swedish and Swiss market models developed at 5000 rpm thanks to their stricter emissions regulations.
Applications:
Similar to M102.920, but less power due to a different camshaft and different carburettor.
Power Output:
Applications:
An update of the M102.920 engine for use in the W124 chassis
Cubic capacity:
Power output:.
Applications:
Similar to M102.921, different carburettor, single-belt drive for alternator, power steering pump and air-conditioning compressor. Hydraulic aided valvetrain.
Power output:.
Application
Low compression version of M102.921
Power output:.
Application
Low compression version of M102.920
Power output:.
Application
A 2.0 L multi-point fuel-injected variation of the M102.921. An "E" was added to the model of the vehicle. This engine is identified by TSZ ignition and multiple belts for the alternator, power steering and air conditioning compressor.
Cubic capacity:
Power output:
Application
An update to the M102.961 introduced in 1985, with a power output of about. This is identified by the EZL ignition system and a single accessory drive belt.
Cubic capacity:
Power output:
Applications:
2.0-litre version with KE-Jetronic fuel injection.
Cubic capacity:
Power output:
Applications:
2.0-litre version with KE-Jetronic fuel injection for the italian W460.
Cubic capacity:
Power output:
Applications:
The M102.980 was a 2.3 L version with a bore and the same stroke. Engine weight was.
Used K-jetronic fuel injection.
Cubic capacity:.
Power output:
Applications:
The M102.981 was a 2.3 L version with a bore and the same stroke.
Cubic capacity:
Power output:
Applications:
Similar to the M102.980 version, but with the newer KE-Jetronic system from Bosch.
Cubic capacity:
Power output:
Applications:
A 16-valve version of the M102.985 with cylinder head designed by Cosworth.
Cubic capacity:
Power output: ; USA:
Applications:
An 8-valve M102 with a displacement of 2.3 L used in the W201 chassis with KE-Jetronic fuel injection.
Cubic capacity:
Power output:
Applications:
An update of the 16-valve version with increased capacity and stiffening ribs, still with a cylinder head designed by Cosworth.
Cubic capacity:
Power output:
Applications:
An update of the 2.5 16-valve version, with shorter stroke and larger bore. H beam rods and piston cooling jets.
Cubic capacity:
Power output:
Applications:
An update of the 102.991 version with removal of four crankshaft counterweights and even more stiffening ribs for higher RPMs. Single timing chain, oil pump with separate drive chain. Bigger Intake manifold, camshaft and exhaust system. Higher compression ratio 10,5:1.
Cubic capacity:
Power output:
Applications: