340 SUNDANCER THREAD

Discussion in 'Sport Cruisers' started by jim696, Feb 1, 2007.

  1. speakrdude

    speakrdude Well-Known Member

    Feb 21, 2009
    Northwest Arkansas
    2002 Sea Ray 340 DA
    Raymarine C80 Tri Data
    twin 6.2 MX MPI
    simply do not turn on the water pump. City water pressure will take over. City water pressure will not reverse itself back into your fresh water tank. Although I’ve read where people have used their wash down hose to top off their fresh water tank, whenever possible.
     
    Jeremy Melton likes this.
  2. suss1173

    suss1173 Member

    319
    Jul 11, 2013
    Sea Cliff, NY
    01- 340 with 7.4 Horizon's.
    Past- Pachanga 27- twin 350's, 94-300 DA with twin 350's Alpha gen 2
    Twin 350 Mag's
    What speakerdude said, and congrats on the new boat.

    As a good practice I never stay hooked up to the city water other then when we’re away someplace and staying on the boat. There’s a few reasons why I do this. First, if I was to sprig a leak, the water work keep flowing and likely cause damage vs the fresh water tank can’t leak anymore than what’s in it. Second reason is that I prefer to use the fresh water tank as much as possible as it help keep it fresh.
     
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  3. suss1173

    suss1173 Member

    319
    Jul 11, 2013
    Sea Cliff, NY
    01- 340 with 7.4 Horizon's.
    Past- Pachanga 27- twin 350's, 94-300 DA with twin 350's Alpha gen 2
    Twin 350 Mag's

    Have you noticed that your boat throws more spray with the enlarged tabs? I’m asking b/c I recently added to my tabs and I’m getting a lot of spray off the transom. Some of it is coming up through the oval cut outs in the swim platform and some coming off the outside. It’s so bad if we have the slightest flowing breeze the cockpit gets drenched, even the rear facing bench gets it.

    Do you have this, and also, do you think I have them set back too far? They are about 3/8 of an inch back from where the original tab starts.

    Here’s some pictures.
     

    Attached Files:

  4. trflgrl

    trflgrl Active Member

    910
    Jun 23, 2014
    Middle Tennessee
    1989 Sundancer 300
    Twin 350 Merc/Alpha 1 Gen 1; Quicksilver 4.0 gen
    Ditto. Most of our crew fill and use the fresh water tank as needed and don't stay hooked up....and some other folks have gotten on the bandwagon since one friend's boat sank. He and his admiral woke up in the middle of the night with about two feet of water already inside the cabin. Granted, a failure of that magnitude probably is rare, but none of us want to take the chance whether we're on the boat or away. (And ditto on using the fresh water tank regularly so it stays cleaner, too, especially in the warm months when gunk grows a lot faster.)

    Congrats on your new "home"!!

    I haven't been around CSR for quite a while, but the 340 is still on my radar if I do get another cruiser, so I always visit this thread to see what's going on with everyone. My oldie but goodie 300DA is doing the job right now, and BF's 60' Sumerset arrives next week, so our hands will be full for the foreseeable future!
     
    Jeremy Melton likes this.
  5. Motoguy2158

    Motoguy2158 Member

    46
    Oct 13, 2018
    Marysville, Mi
    340 Sundancer 2002
    6.2 Mercruiser with ZF V Drives, Garmin Nav, Radar and Autopilot
    Sus I get a little if its really windy...not enough to bother you. the only thing i did was add drop fins on the side. The make the tab act one size larger. That may be why they don't spray as its hold the water under them. IMG_0864.jpeg
     
    suss1173 likes this.
  6. suss1173

    suss1173 Member

    319
    Jul 11, 2013
    Sea Cliff, NY
    01- 340 with 7.4 Horizon's.
    Past- Pachanga 27- twin 350's, 94-300 DA with twin 350's Alpha gen 2
    Twin 350 Mag's
    I was reluctant to add the drop fins b/c it looks like the transom is a bit rounded, and each tab would be pointing inward a bit. But maybe it’s needed.
     
  7. Mittens

    Mittens Active Member

    598
    Mar 5, 2017
    Huntsville, AL
    2002 340 Sundancer, All Cherry Cabin, Black Canvas.
    8.1 Mercs, V Drives, 4.5kw Westerbeke.
    I have threads on here about my whole set up, I built nice big tabs with built in drop fins. And then once in the boat noticed the rounded transom, fin angle.... I cut them off and now just have the larger flat tabs. But I don’t have a bug spray issue. As mine are closer to the transom so less gap. I am betting by your pics, I am the guy that responded to you on facebook with a pic of mine running with showing the spray. It does wash under the platform so no spiders. It nothing up top. On a long ride the platform will actually be dry.
     
  8. MrLean

    MrLean New Member

    3
    Apr 29, 2019
    1994 290 Sundancer
    Twin 4.3L, AlphaOne
    I'm considering going to look at a 1999 340 that's for sale near me in Michigan. It's priced low ($45k), which tells me there is probably a lot of TLC needed. The biggest red flag is that it is from Alabama, and spent most of its life in salt. 1300 hours on the boat, 500 on the twin 7.4L engines. Being from the great lakes, I know literally nothing about what salt does to a boat. What do I need to look out for? I'd obviously have a complete survey done on the boat and engines, but I'd like to get educated before I even get that far.

    Another red flag is that the owner says the generator doesn't work, he doesn't know what's wrong and never investigated because he didn't need it. I'm sure it could be a million different things...assuming the worst case and I needed to replace it, what would the approx. cost be? Could be a good negotiating point lol

    Thanks in advance!
     
  9. suss1173

    suss1173 Member

    319
    Jul 11, 2013
    Sea Cliff, NY
    01- 340 with 7.4 Horizon's.
    Past- Pachanga 27- twin 350's, 94-300 DA with twin 350's Alpha gen 2
    Twin 350 Mag's
    Theres no way to know what the generator needs w/o more info. However it can be removed from the boat when you pull the manifold off the starboard motor. Buying a rebuild will vary in price, I would expect them to range from $3k to about $5k and a brand new one will be closer $8k to $10k.

    The 7.4’s should be closed cooled, so the heads and blocks don’t have salt water flowing through them. However the exhaust components do have salt water in them, so I would plan on doing manifolds, risers, and elbows, assuming they haven’t been done in the last 3 or 4 years. Maybe the coolers/exchangers too, other than that... if a compression & leak down test show good numbers, and she runs good, I’d say proceed.
     
    Last edited: Sep 3, 2019
    MrLean likes this.
  10. CliffA

    CliffA Well-Known Member GOLD Sponsor

    Dec 29, 2009
    Lake Norman, NC
    2001 Sea Ray 340DA
    Name: 'Happy Place'
    4.5kW West. Generator
    Purchased Nov. 2014
    Fresh Water Use
    Twin Merc. 6.2L (MPI)
    640 hp (Total)
    Raw Water Cooled
    V-Drive Transmissions
    No valve to turn on or off...just connect the shore water to the fitting in the transom locker....no need to have the fresh water pump breaker on...the shore water does not need the pump...if you do not have water flowing from the shore water supply you likely have a bad water pressure regulator which is on the other side of the fitting in the transom locker...it is very common for it to go bad over time....mine is bad but I have not replaced it yet but will soon....

    Good luck....
    cliff
     
  11. Motoguy2158

    Motoguy2158 Member

    46
    Oct 13, 2018
    Marysville, Mi
    340 Sundancer 2002
    6.2 Mercruiser with ZF V Drives, Garmin Nav, Radar and Autopilot
    Mittens,, the salt plays hell with the electrical, wiring and anything that can corrode will. Not sure if the boat has a closed cooling system or not....Thats the first concern...2nd being exhaust and manifolds. Get a good marine surveyor and mechanic to look it over with a fine tooth comb. Look over the bilge, and metal parts on the boat, inspect the wiring and terminal blocks looking for the tel tale green corrosion. It may be a great buy and with a little TLC a great purchase
     
  12. Mittens

    Mittens Active Member

    598
    Mar 5, 2017
    Huntsville, AL
    2002 340 Sundancer, All Cherry Cabin, Black Canvas.
    8.1 Mercs, V Drives, 4.5kw Westerbeke.
    I think you meant MrLean?

    I am not boat shopping and my boat is freshwater it’s whole life.
     
  13. rcknecht

    rcknecht Well-Known Member

    Mar 23, 2009
    toms river,nj
    340 Sundancer 2001
    T 454 MPI
    Can anyone tell on my 2001 340 with 7.4 MPI's which engine coolant is used to heat the hot water heater?? I am using coolant and can't find the source....
     
  14. Motoguy2158

    Motoguy2158 Member

    46
    Oct 13, 2018
    Marysville, Mi
    340 Sundancer 2002
    6.2 Mercruiser with ZF V Drives, Garmin Nav, Radar and Autopilot
    Theres a bypass hose off the port engine that heats the water in the tank while the engines running.
     
  15. rcknecht

    rcknecht Well-Known Member

    Mar 23, 2009
    toms river,nj
    340 Sundancer 2001
    T 454 MPI
    Thanks, that makes sense... Unfortunately, I am loosing coolant from my Starboard Engine...
     
  16. CliffA

    CliffA Well-Known Member GOLD Sponsor

    Dec 29, 2009
    Lake Norman, NC
    2001 Sea Ray 340DA
    Name: 'Happy Place'
    4.5kW West. Generator
    Purchased Nov. 2014
    Fresh Water Use
    Twin Merc. 6.2L (MPI)
    640 hp (Total)
    Raw Water Cooled
    V-Drive Transmissions
    As you likely already know there are only two ways to loose coolant....it is leaking out somewhere or it is being burned in a combustion chamber in one or more cylinders...hopefully it is just a leak you have not found yet...

    Good luck with it....

    cliff
     
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  17. suss1173

    suss1173 Member

    319
    Jul 11, 2013
    Sea Cliff, NY
    01- 340 with 7.4 Horizon's.
    Past- Pachanga 27- twin 350's, 94-300 DA with twin 350's Alpha gen 2
    Twin 350 Mag's
    My spray issues is solved...

    I had them re-weld the tab extension so the entire tab sits flush to the original tab, and that solved the issue. Thanks for the feedback.
     
  18. mrsrobinson

    mrsrobinson Well-Known Member

    Mar 9, 2006
    Richmond, Virginia
    Boatless
    2006 Monterey 302
    2000 Monterey 302
    2001 Regal 3780
    1995 Sea Ray 330DA
    2000 Maxum 2400 SCR
    N/A
    Boatless now, but when I was not and connected to onshore water I kept the pressure as low as possible. Barely enough to get a good drip at the faucets and flush the head. And when away from the boat the hose was disconnected.
     
  19. Mittens

    Mittens Active Member

    598
    Mar 5, 2017
    Huntsville, AL
    2002 340 Sundancer, All Cherry Cabin, Black Canvas.
    8.1 Mercs, V Drives, 4.5kw Westerbeke.
    Good deal! Post a pic if you had one.
     
    suss1173 likes this.
  20. DaveDep

    DaveDep New Member

    11
    Sep 15, 2019
    Bay Head NJ
    2005 340
    Merc 8.1x2
    I'm a new owner of a '05 340. Should the AC Converter switch be "on" while connected to shore power? Do the batteries charge if it's in the "off" position? Thanks in advance.
     

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