All Makes/BMW/BMW M40B16

BMW BMW M40B16 Engine Specification

parameter value
Manufacturer Steyr Plant
Year 1988-1994
Cylinder block material cast iron
Fuel system injection
Configuration inline
Number of cylinders 4
Valves per cylinder 2
Stroke, mm 72.0
Bore, mm 84.0
Compression Ratio 9
Displacement, cc 1596
Power, hp 100/5500; 102/5500
Torque, Nm 141/4250; 143/4250
Weight, kg 132
Engine oil specs 0W-30, 0W-40, 5W-30, 5W-40, 10W-40, 15W-50
Oil capacity, liter 4.0
Oil change interval, mile 4000-6000
Engine fits in cars BMW 316i E30, BMW 316i E36


Small displacement in-line four cylinder engine BMW M40 appeared in 1988 and was developed on the basis of M40B18. The new crankshaft with a smaller swing (was 81 mm) and other pistons was installed in motor. Connecting rods have remained unchanged. M40 1.6 differ from 1.8 by intake manifold, throttle valve, sparkplugs and ECU. The cylinder head has not changed – there is the same 8-valve single camshaft (SOHC) with hydraulic valve lifters. The diameter of the intake valves is 42 mm, 36 mm - exhaust. Features of M40 camshaft: phase - 244/244; rise - 10.6 / 10.6 mm.

Cam drives by timing belt. The belt itself is not too reliable and does not have the proper width, resulting in a short life. On average, the timing belt and the roller replacing on M40 engine is required every 20,000 miles.

This engine was used on BMW cars with the index 16i. Replacement for engine appeared in 1993, it was the new M43B16.

1. M40B16 (1988 - 1991) - the base variation of engine without catalytic converter. Power is 102 hp at 5500 rev/min. 143 Nm of torque at 4250 rev/min.
2. M40B16 (1991 - 1994) - version with catalytic converter, 100 hp at 5500 rev/min, 141 Nm of torque at 4250 rev/min.

Other BMW Engines Specifications

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