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€2,000 Experimental 125 HP boxer engine (BMW) Vilnius

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Engines & Props Published date: September 10, 2018 Modified date: September 10, 2018
  • Country: Lithuania
  • Region: Vilnius
  • City: Vilnius
  • Address: Vilnius County

This is probably the only such engine in a world running on a non-stock ECU.
State of the art design, reliable, lightweight, compact, full drive-by-wire, full ignition and injection control.
No carburetor, no icing at increased fuel economy.

Model: K51
Year: 2016
Mileage: 1600

Type: Air/liquid-cooled four stroke flat twin engine, double overhead camshaft, one balance shaft
Capacity: 1170cc
Power output: 92kW / 125HP at 7750 RPM
Torque: 125Nm at 6650 RPM
Compression: 12.5:1
Clutch: Integrated, oil lubricated clutch, hydraulically operated
Gearbox: Integrated, constant mesh 6-speed gearbox with helical gear teeth
1st Gear output: 2.438x (300Nm at 2727 RPM) - no reductor needed

Key features include:
- Flat-twin boxer (oposing-cylinder) - low CG, low vibration
○ Air-Water cooled engine block (glycol-water mixture)
○ Integrated Helical gearbox
○ Integrated wet-clutch
○ Vertical throughflow (no knocking), better turbulence and thus imroved combustion efficiency

- Individual throttle bodies with no intake manifold
○ Rapid throttle response
○ Dual-Contactless feedback in a throttle body - no component wear, fault-tolerance
○ Non-stock Individual throttle body controllers with error detection and high-frequency PWM drive - GUI calibration software, custom throttle curves
- Drive-by-wire - throttle controlled by a simple potentiometer, no mechanical linkage (except for hydraulic clutch lever)

- Non-Stock Electronic Fuel\Injection controll
○ Fully sequential ignition and injection - a standard these days
○ full control and tuning over injection\ignition parameters
○ Multiple ignition maps
○ Closed loop to survive a sensor failure
○ Open loop for efficiency (includes barometric altitude compensation)
○ ODB2 \ Bluetooth \ Smartphone controll
○ COP - coil on plug ignition controll - a standard these days
○ Proprietary chip for CAM signal conditioning - stock engine layout and components are maintained, no mechanical intervention needed

Engine kit includes:
- Two individual throttle bodies
- Two invididual throttel body controllers
- Two COPs (Coil on Plug)
- CAM sensor
- CRANK sensor
- Fuel pressure sensor
- Oil pressure\condition sensor
- Air temperature sensor
- Coolant temperature sensor
- Gear position sensor
- Hydraulic clutch lever
- Two wideband oxygen sensors
- Two radiators + air cooler
- 12v AC\DC inverter
- 15 liter fuel tank with built-in 4 bar fuel pump and fuel gauge sensor
- Wiring harness
- Piping hireness

- Exhaust collector (0.5 inch impact marks)
- Exhaust silencer (bent, for testing)
- Cardan shaft (bent, for testing or propeller mount)
- Secondary wiring harness
- Secondary piping harness
- Spare CAM sensor
- Spare Coolant sensor (built in pipign harness)

*exhaust part interferes with the propeller plane so can only be used for testing. Can arrange non-damaged components if needed.

Overall condition: little scrathches and bruizes on a front engine guard.

!!! ECU not calibrated as it requires a propeller and a trust-stand

These engines are actively propagated by Take-Off gmbh (cherry BX2), however theirs do come with triject ECUs (which alone costs more than entire kit I propose). Also, they run older versions of R1200GS engine which has undergone some serious improvements since.

Overall shipping weight ~220lbs (100kg)

please PM\email me for a working video and more photos as URLs are denied here.

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