Interesting photo, I also haven't found any reference to racing at Dartmouth, the nearest club I could find was from a snippet in a 1931 Motor Boat magazine about the Torquay and District Motor Club. The partially submerged boat in the foreground has an outboard with what looks like an air intake ho...

https://www.ebay.co.uk/itm/294470169912?_trkparms=amclksrc%3DITM%26aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D34bcbdf76961459ca44cf76c4ca484c6%26pid%3D100675%26rk%3D6%26rkt%3D15%26sd%3D164755630175%26itm%3D294470169912%26pmt%3D0%26noa%3D1%26pg%3D2380057%26brand%3DEvinrud...

I should be able to find the bits you are looking for - pm me your contact details if interested

Good to welcome another enthusiast - we seem to be an endangered species here in the UK.
If you are looking for more projects let us know as we might be able to help or point you in the right direction.

Very many thanks to the organisers and those who help make it a great event. The good weather on Sunday certainly made up for the damp Saturday.

Just to say a massive THANK YOU to all those involved in making it such a great weekend.

I agree, many thanks to Rob and Andrew for their hard work and all those who attended to make it such an enjoyable event.

I hope to be there with a few outboards.

Nice motor - you've done a great job.

I have one of these but, as you can see from the photo, the fuel tank/cowl is missing. I think it is complete apart from that. If I can be of any assistance, let me know.