340 SUNDANCER THREAD

I thought the batteries were set up as 2 banks of 2 batteries each.

port batteries: port engine, house and generator
starboard batteries: starboard engine.

but I am not sure.
 
4 batteries. 2 for port engine and genset, 2 for stb engine.

I dont remember which is the house set... I think there split... some on port and some on stb. I dont remember...

If u have a bow thruster they ur supposed to have another battery and a seperate charger...

Rob
 
I agree with the two banks. The house, port engine, and generator are on the port. The starboard engine is on the starboard. If there's anything else on the starboard, I haven't found it.
 
Robski97 said:
Question... why do we care about mpg... Its gph that everyone tracks....

My 03 340 cruised at 3400- 3450 @ 30mph ( sorry no knots here )

Rob
Click to expand...

I've always felt that MPG was the true "barometer" of efficiency

The point at which you are burning the least GPH isn't necessarily the point at which you are running most efficiently. Where you get the most MPG is your real sweet spot....and I'm talking about "on Plane" sweet spot...not the Hull speed "sweet spot"...but this is a whole new topic....sorry for the hijack.....
 
Robski97 said:
4 batteries. 2 for port engine and genset, 2 for stb engine.

I dont remember which is the house set... I think there split... some on port and some on stb. I dont remember...

Rob
Click to expand...

Mine are goofy (1988) There's two batteries for the starboard engine that share duty as house batteries and one additional battery that is for the port engine only. The two banks are isolated and there is a crossover switch to use the port starting battery for the starboard engine if you should run that bank down using those batteries for house duty. The generator charges all three and uses the starting battery on the port side, I think.

That's how it was wired when the previous owner had it as far as I can tell. When I got it, the second battery was missing and a little investigative work revealed that it had been removed to hide the fact that it had melted. I found all of the hardware and replaced the crispy pieces and all is well.

It appears that the scheme is what Searay intended but it still baffles me.
 
I found that one of the easiest things to do to really improve the boat is to add batteries. It is a very nice amenity not to have to worry as much about running short of DC juice.
 
Update

Just to let you know what our service tech found out about our battery situation. He said one of the batteries had bad cells and caused our general battery failure. Not sure why there is no isolation of atleast one battery on the system. Need to talk to the mechanic when they reopen on Tuesday.
 
New issue

Anyone out there know why Sea Ray has added different sized props on 2005 and later 340's with 8.1 L engines? One is a half inch larger than the other. Everyone I talk to says no that isn't accurate but according to the charts it is. Any knowledge?
 
Re: New issue

Bingo Boyz said:
Anyone out there know why Sea Ray has added different sized props on 2005 and later 340's with 8.1 L engines? One is a half inch larger than the other. Everyone I talk to says no that isn't accurate but according to the charts it is. Any knowledge?
Click to expand...
The prop identification on some seems to indicate it. Someone should really physically measure theirs before we take it for the truth. i wonder what the rationale for doing such a thing would be??
 
Definitely two different props. Replaces starboard one this mast week.

Well, my battery issues are not over yet. My Genset pretty much smoked its way to a slow and horrible death over the holiday weekend. Relied on Battery power and did not fair too well at all.

Went to start up to go back to port and could only start the starboard engine. OK, try the emergency start button. Did that, and it killed the running engine and blew the circuit breaker. Could not get the port engine going. Plugged into my friends boat (110) and waited a few minutes and then was able to start up. This has not been a great season for us so far.
 
Bingo Boyz said:
Definitely two different props. Replaces starboard one this mast week.

Well, my battery issues are not over yet. My Genset pretty much smoked its way to a slow and horrible death over the holiday weekend. Relied on Battery power and did not fair too well at all.

Went to start up to go back to port and could only start the starboard engine. OK, try the emergency start button. Did that, and it killed the running engine and blew the circuit breaker. Could not get the port engine going. Plugged into my friends boat (110) and waited a few minutes and then was able to start up. This has not been a great season for us so far.
Click to expand...

An '06 340Da and you already had to replace the props and fried the genny?? What are you doing ?? :smt101 :smt009
 
The prop was our fault. We tried to help a friend get afloat. Everything else has nothing to do with the operators of the vessel. If there was oil and coolant in the generator and I had just checked the strainer and the water was flowing nicely from the side of the boat. What could I possibly do wrong to smoke it? Nothing at all. Just bad luck I suppose.
 
Bingo Boyz said:
The prop was our fault. We tried to help a friend get afloat. Everything else has nothing to do with the operators of the vessel. If there was oil and coolant in the generator and I had just checked the strainer and the water was flowing nicely from the side of the boat. What could I possibly do wrong to smoke it? Nothing at all. Just bad luck I suppose.
Click to expand...

That sucks ... a bad genny on a new boat. Assume you have a Kohler with shield ... was the shop able to pull it without removing an engine or other large components? Just kinda interested how involved the repair was ...
 
Regarding the different props, my starboard engine uses almost 2 gph more than the port at 3500 RPM. 13.5 vs 15.3 . The starboard fuel tank goes down faster (without gen) to confirm it.

To get the same RPM, the right throttle is up a little more (little meaning if anything).

Bottom line - it seems that my right prop takes a bigger bite than the left. I have planned to swap them and test my data. Are they truly different sizes?

Mine have been tuned once, but they were sent out for the work, so I don't know if they were the same or different.
 
Robski97 said:
I think dash stuff is off stb and all electronics.....


Rob
Click to expand...

Rob,

You're right. Smartcraft and other electronics appear to be off stb as well. It makes sense. The goal seems to be to always have one bank to start the engines. Anything that is on when the engines are off goes from the port. Everything else goes off the stb to minimize load on the port (I guess).
 
Hampton said:
Bottom line - it seems that my right prop takes a bigger bite than the left. I have planned to swap them and test my data.
Click to expand...

I don't think you can swap them since they are directional, one turning clockwise, the other counterclockwise.
 
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