Originally Posted by NW Cascade Rider
It was firing on both cylinders, it just seemed to favor the Left jug a bit more. But the spark on both cylinders was very weak. And both TB's showed evidence of back fire / miss fire. Again, missing more in the Right jug than the left. I was not aware that the Ignition fired both cylinders at the same time. that being the case, Is there a good alternative coil or a coil with the same part number that would be a good replacement? If I could find a coil that had the same ohm and voltage output that would be sweet.
I think there are several companies selling more cost-effective replacements to the expensive BMW ignition coil from a dealer. I just had a look and Euromotoelectrics has it listed here
, Beemerboneyard has used replacements listed here (out of stock at the time of posting)
and Motorrad Elektrik has them listed here
. No special reason why you should go to them as I'm sure you could find other sources also - these were just the first places I looked. These guys also all state that early oilhead coils were failure prone.