Raw water cooled engines
I bought a boat in 1992 with a Volvo MD2B 28hp diesel (a 1970 engine). It looked like a ball of rust. I took the time to figure the engine out, clean it, determine it might function, strip it down to the crankshaft, bag each part in ziplock bags and name it, taking photos all the time, have new tips put on the injectors, replace bearings, rings, valve springs, valve guides, etc. Then I painted it. It runs like new to this day. Most knowledgable mechanics will tell you that Volvo has among the most dependable, easy to repair small diesels going. I did this entire rebuild myself, from the crankshaft all the way up through (except the injector tips, honing and spring replacement -need a machine shop). There''s a guy . . . "Never Monday" that frequents the discussion board www.renegade-cruisers.com that has, I think for sale in the "Chandlery" several Volvos for parts. Thing is, I know this Volvo of mine one end to the other now. Would I like a new Yanmar? Sure! Would it last 35 years like the Volvo? ABSOLUTELY NOT. It won''t do 1/3 of that.