Very nice engine... I could lay my hands on a 5/1 or a 6/1 within a few days if I started searching right now, but those twins elude me... I picked up a for sale add once but it was already sold by the time I reacted. I've personally never seen a twin so my interest is instinctively sparked when I see one. Enjoy!
Yep, It'll be fun
I would guess it has done sixty seasons of work driving the shearing shed with ten-month gaps sitting idle and probably nothing very expert by way of maintenance.
Both COV valves look to have been closed in high-compression mode by someone with a big pipe wrench many years ago . . .
It may be one of those machines, the maintenance of which has been passed, piecemeal, down through whoever was in charge of the shearing shed any given year - so who knows what state it's in?
Of course it may run just fine
We'll see
Cheers