Originally Posted by Fender
But then a little old 250 hp outboard on a 7.5 would be a lovely combination.................
I'm not sure a 250hp outboard on a 8m Scorpion would be particularly scintillating either. IMO, your mate has a poor choice of engine if he plans to impress his buddies. Possibly suits him very well for offshore cruising though? Sounds like he'd forgotten to trim his leg down - there's no way that boat was going to get out of the hole trimmed up. I've tried that in an 8.5m with a Yanmar 315hp (4 up) and it was spectacularly unsuccessful. The combination of turbo lag and a 1/2 ton of iron in the stern made sure of that! Effectively the power comes at a rev you won't easily achieve off the plane - so you have to use the noggin - trim down, power on. So a lardy old diesel wouldn't be my choice over a petrol o/b, no.
To return to your mate's problem again - maybe a 260hp, maybe a 7.5 or 8m, history does not relate - but he was in bother not because he had a diesel engine, but because he had one with piss poor low rev performance.
My 370 lifts a 2.5 ton RIB out of the hole in short order, with the leg trimmed waaay out, with six people on board. I know this because I did it by accident last season!