Yes yes we all know about the Yamaha V8 outboard - a stunning example of modern engineering BUT
Look at this
A V8 outboard putting out 390hp yet weighing the same as an optimax 225!!! The Johnson V8 2 stroke - in race trim pumping out as much as 450hp.
Alright I bet it guzzled the petrol but the engine weighs 279lbs or 127kg less than the Yammie - that's quite a bit. Also the Yammie isn't exactly economical either - 120l an hr at WOT.
I want one of these old Johnsons - I just wonder what happened to progress - the brochure dates from 1982!!!