One would expect not but:
[list=][*]a lot of civilian bikes were requisitioned for war use[/list]
[list=][*]Ariel probably had a big stock of oil pipes when war broke out[/list]
[list=][*]When bikes were serviced in the field, whatever spares were available would be used
- when someone restored a bike after the war they often wanted it to look better than a war department bike.
So what you have may not be pure specification, but history associated with your particular bike.
36 4G, 37 VH, 53 ex ISDT KHA (project), 54 KH(A), 54 4G Mk IV (project), Healey 1000/4 (project)
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser.