340 SUNDANCER THREAD

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I never looked at tanks but as per manual #15&17

Strange, but you're right. I looked at my parts list too. The diagram on the page before that list confirms that they feed the Genny and the Starboard engine from the smaller starboard tank. I knew the genny fed from that tank, but silly me assumed that was the one with the extra 7 gallons to compensate for the generator drawing a little more gas. It's just the opposite of what you'd want. I don't get the thinking behind this.
 
Working in my bilge, the starboard tank for sure feeds the genny and the star main... but it looks like the bigger tank......it pertrudes further back in the bilge... not saying the documentation is wrong but makes more since, and looks bigger ha
 
Perhaps they have the larger tank to port to help offset the weight on the strbd side? It's the only logical reason I can think of. Unless, of course, there is some kind of obstruction forward of the strbd tank preventing it from being any bigger...
 
Perhaps they have the larger tank to port to help offset the weight on the strbd side? It's the only logical reason I can think of. Unless, of course, there is some kind of obstruction forward of the strbd tank preventing it from being any bigger...


that would be my guess also....the placement of the larger fuel tank it is a weight distribution consideration.....

cliff
 
Was in my buddy's 2000 340 dancer doing manifolds and elbows and saw a sticker on Starboard tank that said 110 Gallons capacity. I forgot to look at port. I have stuff to do in mine tomorrow and will try and remember to look.
 
Ok folks so I finally got out this weekend to do some running with my new props.

Old props were Hy-Torq 17x17 (3b lade) nibral
I was running 3800 rpm cruising 27.5 - 28 mph. I had to run full tabs to get the bow down.

New Props Michigan DQX 17x16 (4 blade) nibral light cupping.
3600 rpm cruising 30 mph light tabs I am still hitting 4600 rpm probably a little more in the motors but I am not a fan of WOT. I had half tanks (fuel and water), holding was empty 4 adults with more gear and crap then I care to admit. The boat performs totally different. I am blown away at the difference it has made on my boat. Only regret I have is not making this the first thing I did to my boat 5 years ago when I bought it. I am assuming the fuel burn will go down but I really don't keep track of that in fear of the reality of the cost of running my boat. One crazy thing I noticed is my motors sound more throaty. Sorry it took so long to update this topic but the weather has sucked and work has been busy!
 
I wish I knew what to slap on mine. They are 18/22 M-cup 3 blades now.

Would love some more power around dock, and higher cruise speed.
 
I wish I knew what to slap on mine. They are 18/22 M-cup 3 blades now.

Would love some more power around dock, and higher cruise speed.

Try a set of DQX 4 blades. Drop 1 inch in pitch and stay at the same diameter. Call Mike at Deep Blue Yacht supply. He has probably already been involved in the upgrade to other 340 owners with 8.1's They aren't cheap but I would have enjoyed my boat much more over the past 5 years had I made the switch earlier.
 
I have been looking at 340’s for sale and the one that I looked at today seemed to have a low voltage issue with the generator. The generator started up nice and easy, but it was idealing low and it wasn’t putting out enough power to run the air conditioning. Naturally, if I move forward, I’ll get it surveyed, but wondering what thoughts and direction I might get from you CSR folks.
 

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I have been looking at 340’s for sale and the one that I looked at today seemed to have a low voltage issue with the generator. The generator started up nice and easy, but it was idealing low and it wasn’t putting out enough power to run the air conditioning. Naturally, if I move forward, I’ll get it surveyed, but wondering what thoughts and direction I might get from you CSR folks.

I wonder if it could be as simple as an idle adjust? I’d definitely want the generator to be 100% correct as part of your deal. Those things can be a major pain when they don’t run right.
 
Any of you guys with 8.1s in this hull ever check you MPG. mine is crossing slow at 24-25mph, at 3600 rpms, and with a fuel burn of 35-36g/hr thats saying .7mpg.. seems it will do a little better if I had a cleaner bottom..
but sure would help if it was running 28-30 like some say.


in other news, 6 days/5 nights and 261.5 miles! ha and 301 gallons
 
I have an '02 340DA also with 8.1's. At 3500 rpm and pretty full tanks, normal weekend gear, clean bottom, and 2 people aboard, she does 25 knots, and that's been my cruise speed. (25 knots is about 28.75 MPH). I don't have a fuel flow meter, only the old school gauges. I haven't checked my consumption this season yet, but your .7 mpg isn't too far off, although I think my average in previous seasons has been more like .8 mpg. I've calculated it several times over the past couple years, and it's been easy for me to think of it this way:

I seem to travel 45 nautical miles with every quarter of fuel load. These boats don't have long legs... very thirsty engines, and modest fuel capacity. That 45 miles per quarter tank seems to be easy for me to plan with mentally. (It's about 51 statute miles) I did a trip the weekend before the 4th that was appx 100 miles round trip to Bristol, RI. I started with full tanks, and ended just barely under 1/2 on both tanks. By my rule of thumb I would have been at half around 90 miles, and so just below half was about what I'd expect for 100 miles. If you run the genny a lot you'll draw a little more on the starboard tank, which is unfortunately a little smaller already. There was another discussion about that recently. The larger tank, 116 gal, is on port side, and the genny on our boats draws from the starboard, which is 109 gal. (Not the best design decision IMHO.)

With the 45 nautical mile per quarter tank rule of thumb I am using, I have about a 60 nautical mile destination range if I want to do a trip without refueling en-route. 1/3 to get there, 1/3 to get back, 1/3 reserve. If I go somewhere farther than 60 miles from home, I'm planning a fuel stop along the way. That might seem conservative, but I've always thought that 1/3, 1/3, 1/3 concept we were all probably taught in our first US Power Squadron or CG Aux course was smart.

I'm always wicked jealous of the folks with those nice fuel efficient diesels that can cruise forever on a tank of gas... one of these days....
 
Yea I started full, ran 61 miles and was at 1/2 tanks on both. And it took 84 gallons to fill up.
 
I’ve been looking for a link that outlines the step by step prrocess on upgrading to the waterlift mufflers. However I can’t find the info. If someone could re-post the link or PM it to me, I’d be very greatfull.
 
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Has anyone seen or converted the aft sink into a BBQ?

you might want to re-think this....if the camper canvas is up you cannot use the grill because of the smoke...also the grill gets very hot and could damage materials close to it such as vinyl....this hot grill also presents a safety hazard by being located in the normal walkway for passengers....most grills will drop grease while cooking that somehow seems to miss the catch pan of the grill and lands on the deck....you will likely have to keep the grill clean 100% of the time when not in use or else it could stink up the cockpit, especially when the camper canvas is up.....usually I hear of boaters doing just the opposite...they convert their cockpit grill into a counter top....I have two friends that have done this....

cliff
 
you might want to re-think this....if the camper canvas is up you cannot use the grill because of the smoke...also the grill gets very hot and could damage materials close to it such as vinyl....this hot grill also presents a safety hazard by being located in the normal walkway for passengers....most grills will drop grease while cooking that somehow seems to miss the catch pan of the grill and lands on the deck....you will likely have to keep the grill clean 100% of the time when not in use or else it could stink up the cockpit, especially when the camper canvas is up.....usually I hear of boaters doing just the opposite...they convert their cockpit grill into a counter top....I have two friends that have done this....

cliff

+1. I think the novelty of grilling inside the cockpit will quickly wear off once you have to clean grease off the underside of your canvas a couple times.

A cheaper/cleaner/better solution would likely be a slick Magma grill hanging off the back of the boat.
 

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