|BMW M88 engine|
The M88 was produced alongside the M30 engine, as the higher performance engine. The S38 was the equivalent engine to the M88 for North America from 1986 to 1989. In 1989, the S38 replaced the M88 worldwide.
The M90 is a SOHC engine which is based on the M88/1.
|M88/1||204 kW (273 hp)
@ 6500 rpm
|330 N⋅m (243 lb⋅ft)
@ 5000 rpm
|M88/2||671 kW (900 hp)|
|M88/3||213 kW (286 hp)
@ 6500 rpm
|340 N⋅m (251 lb⋅ft)
@ 4500 rpm
|M90||160 kW (215 hp) @
|304 N⋅m (224 lb⋅ft)
@ 4,000 rpm
- 1978-1981 M1
For Group 5 racing, the M88 engine was turbocharged and became known as the M88/2. This race engine produced up to 670 kW (900 hp).
- Group 5 racing cars
The M88/1 engine was modified for use in the E24 M635CSi and E28 M5 and was known as the M88/3. The Kugelfischer fuel injection was replaced with Bosch Motronic producing 286 PS (282 bhp; 210 kW) at 6,500 rpm and 340 N⋅m (251 lbf⋅ft) at 4,500 rpm of torque. It has a compression ratio of 10.5:1.
The M90 engine is a lower performance SOHC engine that was based on the M88/1. It utilizes the same block from the M88 and maintains the same bore and stroke, but borrows its head from the BMW M30 engine family. Different years of M90 engines used both Bosch Motronic and Bosch L-Jetronic engine management systems. Typically identified by a white L painted on the block behind the oil filter housing and coolant water passages on the side of the block.
The M90 sold in Europe and most other markets (except North America) used a compression ratio of 9.3:1, did not have a catalytic converter and produced 160 kilowatts (210 hp).
- BMW S14 - Engine fitted to the E30 M3
- BMW S38 - Engine fitted to the North American E28 M5 and E24 M6
- "Archived copy". Archived from the original on 2012-07-13. Retrieved 2012-08-15.
- "The BMW Six Cylinder Guide". www.autospeed.com.
- "Archived copy". Archived from the original on 2013-10-23. Retrieved 2012-08-15.
|M88 / M90||S38>>|