Redbay fit yamaha sterndrives extensively into their ribs, and would tell you not to fit anything else, although generally the 315hp models go into leisure ribs and they put 245hp versions into their commercial ones. I'm not sure whether its the same engine with reduced horsepower for more wear or whether its for fuel economy.
I should probably point out that they always install them as twins.
The problem is that I need the 315hp. I'm rebuilding a Halmatic Arctic28 to inboard diesel and I've no idea if this engine will be strong enough to hold. Other options are an Yanmar 6ly2a(440hp) and an Iveco NEF370/400. Both with Konrad Sterndrive. I don't know what the topspeed will be. Does anyone have an Idea what they put in a Pacific28 and what the topspeed is then?
Hi we run a hydra drive unit on a revenger 27 it is a very strong unit never let us down it is easyly used for commercial use as it was being used about 2 or 3 times most weeks last year it was used as a traing vesel and also support rib for racing yachts also my dad has been using hydra drives on a windy 30 for the last 10 years before they where launched in the uk and never once did they let him down he was running them on 2 me420 engines all i can say is it is an very reliable enegine and will never let you down one thing that might be worth doing is what we have done in the past is epoxying the oil sumps on the bottom so they cannot rust or be damaged by anything in the bilge but apart from that it is a very very good engine and drive giving a good performance aswell.