I have a Bristol 30, 1976 Hull #174 with a BUKH Diesel. Can anyone advise which is the correct fit in the Atomic 4 line? Or other least cost solution for engine replacement. BUKH is under sized and blew a head and exhaust manifold gasket.
I would look for a remanufactured engine over a rebuild. Yanmar 2gm20 would probably be a good fit and they are available through Yanmar Reman. You can also look at Diesel Engine Trader to see what's available through them. Either way you would be in the $4500-$5500 range.The Bristol 30 is probably too big for an outboard to function properly but if it's just a day sailor you could probably get by with a 15 horse outboard. The 9.9 high thrust might work for getting in and out of a slip but would be under powered for much else. I did see an article in one of the sailing magazines several years back about a fellow who built an outboard well in the cockpit of a boat similar to the Bristol but I don't recall what the reasoning of it was. Seemed to me to be too much work for too little benefit.
I can't imagine any diesel sailboat engine being rocket science to install where your diesel was the biggest issue is angle of the engine transmission and the prop shaft alignment.
How far and how long you shop will determine thr hundreds of dollars in savings with the literal thousands and thousands of wrecked sailboats from the various storms over the last few years, there has to be plenty of you good diesels out there! how to find them, is the mystery..