BMW M106 Straight-6 Engine
From 1982 to 1986
The BMW M106 (also called "M30B34MAE") is a turbocharged straight-6 SOHC piston engine which replaced the M102 engine and was produced from 1982 to 1986.
Compared to the M102, the M106 has Bosch Motronic engine management, a higher compression ratio of 8.0:1 and an increased displacement to 3,430 cc (209 cu in).
Peak power output is the same 185 kW (248 hp) as the M102; however, it occurs at lower RPM, using 6 PSI of boost.
Applications:
- 1982-1986 E23 745i
Technical
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BMW M106 Engine Technical details and specifications (1982-1986)
BMW 7 Series (E23) 3.4 745i
No. of cylinders 6/OHC
Capacity 3430 cc
Compression ratio 8.0:1
Firing order 1-5-3-6-2-4
Suitable for unleaded petrol Yes
Fuel system Make Bosch Motronic
Fuel system pressure 2.45-2.55 bar
Ignition coil Make Bosch Type 0 221 118 335
Distributor Make Bosch No. 0 261 200 013
Thermostat opens 80°C
Starter motor Make Bosch Type 0 001 314 025
Minimum starting voltage 10.0V
Maximum cranking amps 178-218 A
Alternator Make Bosch Type 0 120 469 560
Regulated voltage 13.5-14.6V© Motor car History
