I have a 1993 Larson 200 SEI with a Mercruiser GM V-8 305 CID (5.0L) OD847934 MCM Alpha Model engine and alpha one gen II std rotation OD469884 and above stern drive unit. When going at 1000 RPM's or less the temp goes up to 250F in 5 min. or so and then the engine shuts down. When cooled down...
