Loyd Dinneen
Active Member
- Jul 29, 2017
- 484
- Boat Info
- 1977 Sea ray 240 SDA cruiser w/ twin 470 mercs.
- Engines
- Twin 470 Mercruisers
I have a 1977 sda 240 Sundancer srv Searay with twin 470's and I have just been working on a overheating issue on the stbd engine so I cleaned the riser and cleared all the passages. I then reinstalled everything topped off the coolant. I also installed two new batteries and hooked everything back up again. I then started it up and after it was running at 1500 rpms for about 10 or 15 minutes I smelled smoke and saw smoke coming from the front damper pully and could see a glow coming from the rectifier so I shut it down. Up until that time the system had been over charging with the old batteries but with the new ones was charging fine at 13.5 volts then started smoking. The port engine is doing just fine and charging at 12.5 volts as the battery is fully charged. Question I have is if the selector switch is on both can this effect anything as for the charging, seems to charge both batteries when one engine is running no matter which one. Honestly haven't quite figured out where to put the switch when running the motors. I feel the rectifier is shot on the stdbd engine so can I just disconnect the two wires from the rectifier and do the conversion really don't have much room to get at the damper to remove it.