BMW M88

The BMW M88 is a straight-6 DOHC piston engine produced from 1978 to 1989. It is based on the M49 engine motorsport, que was used in the BMW 3.0CSi.

Design

BMW engineers used a 4-valve head and a single-row timing chain. Kugelfischer fuel injection was used with single throttle valves and the distinctive six inlet pipes.

Models

Engine	Disp	Power	Torque	Bore	Stroke	Year	Application
M88/1	3,453 cc (211 cu in)	203 kW (272 hp) @ 6500 rpm	330 Nm (243 lbft) @ 5000 rpm	93.4 mm (3.7 in)	84 mm (3.3 in)	1978–1981	BMW M1
M88/2		670 kW (898 hp)					Group 5 racing cars
M88/3		210 kW (282 hp) @ 6500 rpm	340 Nm (251 lbft) @ 4500 rpm			1983–1989	BMW E28 M5, BMW M635CSi
M90		160 kW (215 hp) at 5,200 rpm	304 Nm (224 lbft) at 4,000 rpm			1978–1982	E24 635CSi, E12 M535i, E23 735i

M88/1

The M88/1 was the first iteration of the M88 and was fitted to the BMW M1  Between It produced 277 hp (207 kW) @ 6500rpm and 239 lbft (324 Nm) @ 5500rpm.

M88/2

For Group 5 racing, the M88 engine was turbocharged and Became Known as the M88 / 2. This race engine produced up to 900 hp (670 kW).

M88/3

The M88/1 engine was modified for use in the M635CSi and E28 M5, This engine was Known as the M88/3. The Kugelfisher fuel injection was Replaced with Bosch Motronic and the engine produced 286 hp (213 kW). It has a compression ratio of 10.5:1.
The M88/3 was Also fitted to the South African 745i, due to packaging problems with the turbocharged engine M102 Which was used in other markets.

M90

The M90 engine is a SOHC Engine That lower performance was based on the M88/1. It uses TO the same block from the M88 and Maintains the same bore and stroke, but uses Both Bosch Motronic fuel injection and Bosch L-Jetronic. Typically Identified by a white L painted on the block behind the oil filter housing.

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Last updated on 14 May 2013 at 11:02.