Repowering 4.8m Ribcraft
Just wondering if anyone has any strong thoughts on what engine would suit my 4.8m ribcraft. Currently powered by a 75hp 1999 Mercury 2 st, but seems a little heavy on fuel compared to my old boat--5.8m tornado, powered by 115hp 2 st. Two obvious choices are the etec's and TLDI's. I use the boat mainly for diving with one coax and two divers plus kit. The 75hp pushes the boat along well, but seems to gulp the fuel off no matter how much I open the throttle--currently using 20-25mph as the baseline for cuising speed. Top speed is around 35mph. Over the last season I have been considering whether now is the time to repower, realising the best price for the carburettor engine, and opting for a fuel injection model, and thereby hopefully realising better fuel economy. Given my intended use, size of the boat, and current experiences of older v newer type engines, I'm looking for some advice on engine size and type from those more in the know. All advice/comments welcome from you seasonned ribbers.