Thanks for the ideas Neville, helpful to hear from those in the know. I found a 250Hp six cylinder somewhere on the net the other day and considered it, but this boat has had the engine box moved right to the stern and a new console fitted and I think it's too big, will keep it in mind though. The other thing is that it has already had the sternpower leg removed and another fitted, probably a volvo although it's no longer there, so there's not necessarily any reason to stay with sternpower. When a six cylinder diesel has been fitted, what gearbox / leg arrangement was used do you know?
Ok then I think that between the lot of you you've convinced me to stop thinking about V8 diesels! Although Jon Fuller seems to be happy with them, if boatmad ever let me in I'll speak to him about them. I'd discounted the ALpha leg anyway, might have put it on a B1 though instead of the sternpower.
What about the Yanmar 4HLA and Bravo 1 leg? any comments on this setup, 190Hp continuous 240Hp max.
Meanwhile thanks for all the feedback from everyone - I appreciate it and I'm learning!
"I'm not lost, I'm exploring...."