BOOM TRIKES V2 Automatic - Engine and Vehicle Technical Specifications

TECHNICAL SPECIFICATIONS, LIQUID-COOLED 4-STROKE, 4-VALVE, 839 C.C. ENGINE
ENGINE
Type:
2 - cylinder 4-stroke
Bore:
88 mm
Stroke:
69 mm
Cubic capacity:
839 c.c.
Compression ratio:
10.5 : 1 0,5
Valve train:
Single overhead camshaft, chain-driven from the alternator side,
integrated camshaft sensor (tone wheel),
4 valves and automatic valve lifter for starting
Valve clearances:
Inlet : 0.15 mm
Exhaust: 0.15 mm
Valve adjustment
Tappet adjusters on rocker arms
Idling speed:
1250 50 rpm
Starter:
Electric starter motor
Lubrication:
Trochoidal oil pump in crankcase,
oil filter, bypass regulates oil pressure
Oil pressure:
3,5 - 4 bar
Lowest permissible oil pressure
(at 100° C)
0.8 bar
Carburation:
Electronic fuel injection, electrical fuel pump, 38 mm choke,
individual fuel injectors
Max. power
(at crankshaft)
51,8 kW (70 bhp) at 7,750 rpm
Max. torque / rpm
71 Nm at 4,500 rpm
Cooling system
Liquid cooled engine, crankshaft driven water pump,
3-way thermostat and fan
Power train
automatic gearbox with conical pulleys, belt drive, automatic
clutch, reduction gear unit and fan in drive housing
Secondary reduction with oil bath gear train on chain to
differential
Ignition
Inductive ignition system integrated into fuel injection system,
variable ignition timing and separate ignition coil
Ignition timing
Variable, FI-controlled
Spark plug
CHAMPION RG 6 YC, NGK CR 7 EKB
Engine oil
Fully synthetic oil SAE 5W/40, must exceed API SY
Oil capacity:
2.6 ltrs.
Cooling system, capacity:
3.0 ltrs.
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