Austin 10 Engine

As used in the Austin 10 Saloon car and the Bristol Crawler tractor. Partially assembled to show the internal parts.
Original fan blades are no longer available, but those for an old austin mini are a perfect fit.
This is a side valve engine, that is to say the valves are in the block, not in the head.
The spark is provided by a Magneto, no requirement for a battery, but the downside is no electric start.