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Technical specification
Year1971-1976
Type2
Identification letterAD
Engine code2/1600
kW37
BHP50
RPM4000
No. of cylinders4 (OHV)
Capacity (Fiscal)[cc]1584
Compression Ratio7.7
Siutable for unleaded petrol (+ = Yes, - = No)+
Minimum octane rating91
Ignition systemSZ, CB
Fuel systemSolex 34 Pict
Ignition system
Ignition coilBosch 0 221 114 014
Ignition coil supply voltage[V]11
Primary resistance[Ohm]2.6-3.6
Firing order1-4-3-2
Distributor (ECM)Bosch 211 905205S
Contact breaker gap / trigger air gap[mm]0.4
Dwell angle[°] (%)44-50 (49-56)
Tuning and emission
Static timing7.5
Ignition timing (o = without vacuum, + = with vacuum)o
Ignition timing - basic BTDC[rpm]0/800-900
Ignition advanceWithout vacuum and basic timing
Ignition advance checks6-12/1500
Ignition advance checks22-25/3800
Vacuum check (+ = advance, - = retard)+
Vacuum range8-12
Vacuum starts[mbar]80
Vacuum ends[mbar]266
Idle speed[rpm]800-900
Oil temperature for CO2 test[°C]60
CO level @ idle speed, tailpipe[%]2.0-4.0
HC level @ idle speed[ppm]500
CO2 level @ idle speed[%]13-16
O2 level @ idle speed[%]0.5-2.0
Spark plugs
Spark plugsBosch W8AC
Electrode gap[mm]0.7
Spark plugsChampion L86CC
Electrode gap[mm]0.8
Spark plugsNGK B5HS
Electrode gap[mm]0.6
Fuel system
Fuel pump delivery pressure[bar]0.24
Service checks and adjustments
Valve clearance - Inlet[mm]0.15 cold
Valve clearance - Exhaust[mm]0.15 cold
Compression Pressure[bar]7-10
Drive belt size - alternator[mm]9.5x900
Drive belt tension - alternator/PAS/AC[mm]15
Lubricants and capacities
Engine oil grade (moderate climate)10W/30
Engine oil classificationSF
Engine with filter[l]2.5
Gearbox 4/5 speed[l]2.5
Tightening torques
Cylinder head[Nm]10 / 32
Big end bearings[Nm]16 / 33
Flywheel / Driveplate[Nm]300
Spark plugs[Nm]35
Road wheels[Nm]120-130
Starting and charging
Battery12/65
Starter motorBosch EF(L)12V0.7PS
Minimum starting voltage[V]9
Maximum cranking amps[A]119-145
Alternator / RegulatorBosch
Voltage regulatorVA 14V 30A

Tags

aircooled, engine, 1600cc, specification