Digital Ignition System - BMW R Airhead with Bosch Alternator; Crank mounted optical sensor / EnDuraSpark
BMW airhead electronic ignition system; bmw airhead digital ignition system; airhead electronic ignition system; airhead digital ignition system; Alpha ignition system; Omega Ignition System; Volker Sachse Electronik
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Technical Specs Application Table
This product has been replaced by EDL-BOIGNS


EnDuraSpark Ignition System for Bosch Alternators !

Vehicle Manufacturer: BMW
Application: 1970-1995
Make/Model: BMW : Model 247, Airhead
Model Years: 1970-1995
Manufacturer #: Not available from dealer

(See APPLICATION TABLE tab to verify vehicle fitment )
Important Note: If you have the large mechanical voltage regulator installed you will need to replace it with a smaller voltage regulator to be able to mount the ignition module and voltage regulator. Choose the VR-ExtAdj option to add the smaller adjustable voltage regulator free of charge.

Brand : 123

The Euro MotoElectrics EnDuraSpark Electronic Ignition is an electronic hall effect trigger and electronic ignition advance module that replaces under-performing BMW Ignition points, condenser, mechanical advance unit and on later models, the electronic ignition control unit and bean can trigger unit.
This ignition replaces the ignition systems on all 1970-1995 BMW Airhead motorcycles. It is configurable for both single-plugged and dual-plugged engines. The EnDuraSpark ignition system is the last improvement ever needed on an Airhead ignition! If you have the Bosch 3-phase alternator, see EDL-IGN

EnDuraSpark Ignition System Kit for fitment to the Bosch 3 Phase Alternator

“Set once and forget” ignition timing requires NO maintenance. Both dwell and ignition
timing are drift free and permanent. Worn rubbing blocks, failing condensers, closing points
and burned contacts are problems of the past. No more burning hands on hot header pipes
while trying to adjust the dwell (points gap) or rotating the points backing plate (ignition
Provides the hottest possible spark using existing coils.
Unlike some competitive units, the EnDuraSpark electronic ignition is not sensitive to
battery voltage. It provides a full spark with battery voltage as low as 7.5 volts.
Also unlike some competitive units, the EnDuraSpark electronic ignition does not use the
original mechanical advance unit so worn springs, gummy advance mechanisms, worn “D”
slots in the mechanical advance units and obsolete timing curves are problems of the past.
No more problems with fast idle speed because of “hung” advance units.
The crankshaft-fired trigger provides rock solid timing (more accurate than the stock camfired
points) independent of timing chain wear and uneven advance unit cam wear. No more
dual or hopping timing images. Crankshaft firing allows operation on engines with damaged,
or broken-off cam noses. Normally these situations require replacement of the camshaft!
For peace of mind, the design allows the original ignition system to remain installed.
Switching to the original stock ignition simply requires re-connecting one wire.
Provides a harsh environment, waterproof, strain-relieved connection between trigger and
electronics. The resin potted and mechanically robust electronics module requires no
dielectric grease for mounting or maintenance. Both the trigger and electronics units are
designed and manufactured to modern electronic packaging standards. The low profile Light
trigger sensor fits under the alternator cover with no cover modification.
Provides dynamometer optimized ignition advance curves for both single and dual-plugged
engines. Unlike some competitive units, the advance curves have a 3800 maximum rpm after
which there is no increase. Also unlike some competitive units, there is no loss of power or
gas mileage due to over-retardation at lower RPMs. Having the correction ignition advance
reduces cylinder head temperature, extends exhaust valve and valve seat life and improves
overall performance.
Euro MotoElectrics, 2505 W 2nd Unit #14, Denver, CO 80219 Tel: 1-303-526-0901
EnDuraSpark Electronic Ignition
For Bosch 3-Phase Alternator
Product Information Version 3.0
Features (continued)
Eliminates hard starting and high speed hesitation due to closed up or burnt points.
Eliminates vibration caused by ignition timing variations between cylinders. This may be
caused by a worn D slot in the advance unit, an imperfection in the point cam lobes or a
slightly bent cam nose. Because the EnDuraSpark ignition is fired from the crankshaft, it is
immune to these problems.
Automatically turns off current to coils when the engine stops but the ignition is left on. This
prevents over heating the coils.
Starts easier than the stock system because the electronics reduces the advance to 0° between
0 and 400 RPM.

Bonus Features
A timing degree wheel for the EnDuraSpark Electronic Ignition timing wheel is included.
This allows easy visual timing verification and adjustment.
A double-sided laminated wiring diagram for both the EnDuraLast Alternator and
EnDuraSpark Electronic Ignition is included, shaped to the size of the under-the-seat BMW
toolbox. Also on this sheet are instructions for re-connecting the points ignition.
The EnDuraSpark Electronic Ignition Installation Guide provides comprehensive ignition
timing information and troubleshooting documentation for BMW Airheads

  • Modern electronics technology updates the BMW R Airhead under-performing Bosch ignition system.
  • The critically important ignition timing is maintained with a crank-mounted trigger rotating past a micro-size optical sensor.
  • Dyno developed advance curves for BMW single- and also dual-spark system can be chosen during installation.
  • The original Bosch ignition system can be left in place.

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