Parts for single cylinder OHV IC engine

Parts for a single cylinder overhead valve IC engine including machined head and barrel, one valve, part machined crankcases, connecting rod and piston.

Appears to be of the Westbury era but we're not sure exactly what it is - I'm sure one of the IC experts will be in touch!

Update 28/9/22: Sure enough, one of our IC engine gurus identified this one a few hours after we listed it. Allegedly a Westbury "Kiwi" - there's a picture of the a complete one in the Archive here.