My thought is you left out the most important constraining variable: Year, make and model.
Via duckduckgo.com/?q=652cc+air+cooled+rear+engine+-motorcycle the likely candidate is the Fiat Panda.
According to www.classicandsportscar.com/features/square-space-fiat-panda-40:
Quote:
|
At its launch, the Panda was primarily offered with two engine options: the 30 edition employed the air-cooled 652cc two-cylinder unit from the 126 Personal, with power boosted by a giddying 6bhp; the Panda 45, meanwhile, used the 903cc pushrod ‘four’ from the Fiat 127 that, remarkably enough, produced 45bhp.
|
23hp sounds like not too much.
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
________________
.
.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
|