It is 4 cylinder 3,300cc and rather powerful and fast. I have seen off a modified light bodied Prince Henry Vauxhall with it despite its body size and barn like aerodynamics. It is not as nice to drive or as quiet as the 14hp being heavier and enclosed but still is a magnificent open road car that only the bigger six cylinder veteran Daimlers will beat. It is 636cc and truly delightful and smooth to drive but slowish at 25 mph cruise. It has never let me down but brakes are not that flash.
Body is wholly original but for paint and leather.
The one now fitted is correct for the car and has a serial 161 as compared to the car 185 and I suspect it may be the 11th Minerva car engine built. It took part in the 1986 London to Brighton but did not like British fuel much, it had no power, but we got to Brighton in good time. It is the original Mini being of that name, tiny, east-west engine layout, vertical water cooled and front mounted with the gearbox inside the engine and using its oil for lubrication. It is a 1903 pattern but has a 1904 pattern carburettor and muffler. Again the motor is original internally and goes remarkably well and is both willing yet docile.