While some of us are still locked down, or under-employed, something to exercise the bit of fat between your ears: Name this engine!
Nice to see a degree wheel, threebond, nail polish, writing sticks and threadlocker... Edit, the far left carb is missing a nipple.
OK, looks mass produced yet somehow clunky. DOHC. Definitely Euro, not US, definitely not British. Alpha Romeo boxer of the 1970's. Alfasud?
^^^^ That dry clutch had me stumped, but was looking at the pic thinking it would have to me mounted longitudinally, or else why offset the clutch? Good call.
Hrrmm.. it is not a car engine... Look at the small bottle of threadlocker.. Even an Alfa-sud engine is huge compared to this thing.. With the off-set clutch, and with the twin cam per bank it is a performance engine.. Not sure if it is mass produced though...
MV was working on a 500 flat 4 IIRC Looks like it; https://www.motorcyclistonline.com/news/whatever-happened-tomv-agustas-boxer-four/