I'm intending to pull the Crossflow out of my Sylva before Spring, to fix a sump oil leak, so I could weigh it then, if you don't get any better offers...
Probably the slowest response ever, I know, but just in case anyone tries a search in future:
The weight of my Crossflow, including twin Webers and inlet manifold but without alternator, starter motor, exhaust manifold and with no oil is exactly 107kg (236lbs).