Mercedes-Benz M102 engine

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

Contents

M102.920


The M102.920 was a 2.0 L (1997 cc) engine with an 89 mm bore and 80.25 mm stroke. Power output was 109 hp (81 kW).

Equipped w/ carburettor 175 CDT

Applications:

M102.921


Similar to M102.920, but less power output due to a different camshaft and different carburettor.

Applications:

  • 1983-1993 190

M102.924


Similar to M102.920, different carburettor, new single-belt drive for generator. Hydraulic aided valvedrive.

Application

M102.962

A later multi-point fuel-injected variation of the M102.921 that was introduced in 1987, with a power output of about 122bhp. An "E" was added to the model of the vehicle (standing for "einspritzung", the German word for fuel injection).

Applications:

M102.963

2.0 litre version with KE-Jetronic fuel injection.

Applications:

M102.980

The M102.980 was a 2.3 L (2299 cc) version with a 95.5 mm bore and the same 80.25 mm stroke. Power output was 136 hp (101 kW). Used K-Jetronic fuel injection.

Applications:

M102.981

The M102.981 was a 2.3 L (2299 cc) version with a 95.5 mm bore and the same 80.25 mm stroke. Power output was 125 hp (92 kW).

Applications:

M102.985

A later multi-point fuel-injected M102 with a displacement of 2.3 L. Used KE-Jetronic fuel injection.

Applications:

Cosworth conversions

Cosworth developed an M102 2.3-litre variant with a 16-valve cylinder head for use in the 190E 2.3-16. The 2.5-litre engine in the later 190E 2.5-16 was based on this same engine.

See also

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