The main technical characteristics of the engines of cars manufactured in 1972-1977.
* From model year 1976 rated power «net» fuel injection engine «K-Jetronic» is 125 hp at 5700 rpm, maximum torque - 17.5 kgf·m at 4350 rpm.
The main technical characteristics of the engines of cars manufactured in 1977-1987.
Since the 1982 model year, the following engine specifications have been changed:
- Compression ratio: «518»: 9,5; «5181»: 9,3; «525i»: 9,6; «528i»: 9,3.
- Rated power «net», kW (hp) / at the frequency of revolutions of the crankshaft, rpm: «518»: 66 (90) /5500; «518i»: 75 (102) /5800; «525i»: 110 (150) /5500; «528i»: 135 (184) / 5800.
- Maximum torque, kgf·m: «518» or «518i»: 14,0; «525i»: 21,5; «5281»: 24,0.
- The maximum allowable crankshaft speed for engines of all models, rpm: 6400.