When next at the owners I will have a look for the engine number, one of the past owners years ago did mention it had one so hopefully that is correct, apparently there's another engine of the same build in a collection in Vic ??Before seeing those photos, I would have said there was no such engine. If you could find a serial number I will check the records.
The V pulley is probably a later addition, the 4 holes in the flywheel could be for a drive pulley or drive flange?Any clue as to its age? Going by the style generally it looks to me like 1920's. The extended crankshaft indicates a drive pulley could have been fitted. The V-belt pulley is out of character to me.
It does give that impression and I thought the same that the engine is fabricated from steel, however yesterday having a closer look it all seems iron castings.Having a closer look at the photos, I am wondering if that crankcase isn't a steel fabrication. It looks to be welded. Someone made it up out of KL parts?
Great photos Wayne.This is the original version of the BW. As you can see the magneto is mounted vertically which is probably not the same as your engine, but would be the same as the engine in Typak's photo. I have included a photo of the cast name to show how sharp the detail is compared to later models.