Originally Posted by
cadunkle
Usually "blown up" in this context I would think refers to excessively worn main and rod bearings, causing low oil pressure or a knock. Often happens from neglecting oil changes, oil starvation (low oil level or issues with boat pitch, surfing, etc.), lugging from running too much weight/load at too low an RPM, etc. Or other random failures like head gaskets or stuff like that which could be caused by a chewwed up impeller and not noticing temp climbing, or any number of things. Generally boat motors like these don't seem to have the catastrophic failures like throwing a rod, breaking rockers or studs, etc. since they don't turn high RPM
It's also possible since it's such a new boat that this was a failure under warranty. Could be any number of "shit happens" scenarios.
Former owner of a 1987 Supra Saltare. Current owner of a Malibu 23LSV.