Water heater in 340 EC 1989

Discussion in 'Classic Sea Rays' started by Razzle Dazzle, Jan 13, 2018.

  1. Razzle Dazzle

    Razzle Dazzle Ship shape and Bristol Fashion SILVER Sponsor

    46
    Jul 2, 2016
    United Kingdom and Florida
    Sea Ray Express Cruiser 340 1989 Mercruiser 7.4
    Mercruiser twin 7.4 Gas powered
    help, I think there is a problem with my water heater in my 1989 340 EC will this be a very expensive fix??
     
  2. Little Ducky

    Little Ducky Active Member

    513
    Jun 5, 2017
    Chattanooga TN/Dickson TN
    1998 SeaRay 290 Sundancer
    Twin 5.0L w/Alpha 1 drives
    Need to know what's wrong with it?

    Leaking, Doesn't turn on?, Has power but doesn't heat?

    New units are around $300 depending on size.
     
    Last edited: Jan 13, 2018
  3. hottoddie

    hottoddie Member

    956
    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 Express
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin GSD 22 Sounder
    Garm
    454 Crusaders
    More info on what the problem is. Also are you a DYI kind of guy? Probably a 6 galloon heater and as stated around $300 plus the install. Maybe the old one can be fixed.
     
  4. Razzle Dazzle

    Razzle Dazzle Ship shape and Bristol Fashion SILVER Sponsor

    46
    Jul 2, 2016
    United Kingdom and Florida
    Sea Ray Express Cruiser 340 1989 Mercruiser 7.4
    Mercruiser twin 7.4 Gas powered
    IMG_3639.PNG IMG_3639.PNG IMG_0103.PNG IMG_0102.PNG Thanks for the responses. I have to speak to the boatyard mechanic Monday as it is in Daytona Beach (finally) and I am still in England for a few more days. It was finally transported down from Bourne, Mass after all the storms and just arrived last Friday. Wish I could do it myself but I am a motor moron. Bottom has been just been sanded and painted ready to put her in at the Halifax River Marina. I have a feeling that it might be best to have the whole thing replaced unless I get lucky and it's just the thermostat. Lots of original stuff on this old gal. I think they found it while flushing out the winterisation pink so I assume it's a leak but won't know until Monday for sure. I found the old specs from new so I guess it is a 6 gallon and Atwood makes them for these old sea rays now. I love this site and how much I have learned from you fellows. I'll keep you posted. I think someone said that it was a 4 to 5 hour job but if this doesn't sound right please let me know. Looking at the paper specs for the 1989 340 Express Cruiser it appears to be a little aft of the helm seat in the starboard bilge quite far from the 40 gallon fresh water tank. I think not having the extra berth allows for a bit more room for the mechanic to move around in this area. The boat has been on the hard for 4 years I had the engines and genny serviced and the nasty duckbill valve replaced and other bits and bobs fixed but until I splash her in and spend some time aboard and sea trial her I won't know what I'll find. I want to make her as pretty as Jason's. There is a long wait for canvas work due to Irma and until that's done I will not be able to do the necessary cosmetic work in the cockpit area.the interior has always been kept tidy. Does anyone know what's happened to Capt Rusty I would love to meet him.
     
  5. Razzle Dazzle

    Razzle Dazzle Ship shape and Bristol Fashion SILVER Sponsor

    46
    Jul 2, 2016
    United Kingdom and Florida
    Sea Ray Express Cruiser 340 1989 Mercruiser 7.4
    Mercruiser twin 7.4 Gas powered
    Where are you on the Cape? I'm a Massachusetts expat living in England wintering in Daytona Beach where I will keep her at Halifax River Marina
     
  6. northern

    northern Well-Known Member

    Jan 17, 2007
    West coast Vancouver to Alaska
    380 Aft Cabin 1989 GPS and Charts by Nobeltec
    Twin 454 strait shaft
    I replaced mine. Marina where I keep the boat wanted $1,200. I got the exact same model for $400 and put it in myself. It took me half a day. New one weight might have been 20 pounds as I could carry it without effort. It was 10.5 gallons. If you do it yourself make sure you take the water fittings off the old one as you will need them to complete the installation of the new one.
     
  7. JVM225

    JVM225 Well-Known Member

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    It’s been a while since I looked in the bilge of a 340 but I think you might have some pretty good access and replacing a water heater is fairly easy. If it isn’t leaking it could just be the heating element which would be even cheaper to replace than the whole water heater.
     
  8. Razzle Dazzle

    Razzle Dazzle Ship shape and Bristol Fashion SILVER Sponsor

    46
    Jul 2, 2016
    United Kingdom and Florida
    Sea Ray Express Cruiser 340 1989 Mercruiser 7.4
    Mercruiser twin 7.4 Gas powered
    Thanks again, I spoke to the manager at the yard today. They bypassed the hot water tank to finish flushing the pink out. He said that it can be worked on once it is in the water. The boat has been on hard standing for 4 years. They are checking the stuffing box on the props and say that the bottom painting has been nearly finished. I leave Blighty for Daytona Beach this Thursday arriving close to midnight on the 18th.
     
  9. Razzle Dazzle

    Razzle Dazzle Ship shape and Bristol Fashion SILVER Sponsor

    46
    Jul 2, 2016
    United Kingdom and Florida
    Sea Ray Express Cruiser 340 1989 Mercruiser 7.4
    Mercruiser twin 7.4 Gas powered
    That was quite a labour charge for a half days work. I believe in paying a decent hourly rate to folks who know what they're doing but that's a total "Mick Take". I hope to have a 380 some day but the 1989 340 EC is roomier than the newer 380's they appear to be all swim platform. Thanks for the advice about the water fittings. I get to see my new "hole", no I mean home on the water this Friday. Yippee! How long have you had your 380?
     
  10. hottoddie

    hottoddie Member

    956
    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 Express
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin GSD 22 Sounder
    Garm
    454 Crusaders
    Most likely $1200 included a half day for 2 workers plus a mark up on the water heater. Not the most efficient use of manpower as 1 worker would be sitting doing nothing for 90% of the time.
     
  11. 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)
    Raw Water Cooled
    V-Drive Transmissions
    I replaced my HWH when I first got my boat. It was rusted out pretty bad to the point I could not remove the mounting screws. I ended up having to cut the unit into several pieces to get it out. Replacement with a new heater was fairly easy since I have good access. I set the new heater on top of a couple pieces of 1" square aluminum channel to keep the new heater from sitting directly on the bilge floor. One reason the old heater was so rusty was because water was trapped between the heater bottom and the bilge floor. The fitting for the cold water inlet to the heater is actually a one way valve. It can be installed backwards which will prevent water from flowing into the heater. Can you guess how I know that ?

    Good luck.

    cliff
     
  12. northern

    northern Well-Known Member

    Jan 17, 2007
    West coast Vancouver to Alaska
    380 Aft Cabin 1989 GPS and Charts by Nobeltec
    Twin 454 strait shaft
    Razzle
    We got the boat in 2005 with 650 HR on the engines we now have 2950 HR on the engines. The 454s are a solid engine, make sure you change the oil every 100 hours or so and transmission fluid as the book says, for us that is 250 HR. You will probably have the PEX screwed water fittings. Go to Lowes or Home Depot and get a few spare nylon elbows and connectors because you may have a few leaks at the fittings. Take a picture with you cell phone. The clerk will know what you are after.
     
  13. northern

    northern Well-Known Member

    Jan 17, 2007
    West coast Vancouver to Alaska
    380 Aft Cabin 1989 GPS and Charts by Nobeltec
    Twin 454 strait shaft
    The reason the $1,200 was they wanted about $700 for the heater and $500 to put it in.
     
  14. atrick

    atrick Member

    46
    Mar 4, 2017
    Penna
    1995 searay 290 Sundancer
    1990 21 maxum
    Twin 4.3 mercrusers with alpha one drives
    305 chevy with a alpha one drive
    You can find them on internet but you got to really look to find best price. I got a 8 gal that's dual heated-120v or by engine cooling when running-and the prices went from $300 for the lowest price to $800 for the most expensive for the same model number, so shop around! In my 290 took about 1 1/2 in time to install.
     
  15. Razzle Dazzle

    Razzle Dazzle Ship shape and Bristol Fashion SILVER Sponsor

    46
    Jul 2, 2016
    United Kingdom and Florida
    Sea Ray Express Cruiser 340 1989 Mercruiser 7.4
    Mercruiser twin 7.4 Gas powered
    Finally got aboard the boat Friday. Was a little perturbed to see that the dipstick has been pulled out of the genny no where to be found and my cleaning bucket was upside down in the bilge and the mechanic hadn’t put the deck back over the genny. I looked for the offending water tank where it should have been but found that it was tucked aft on the port side. The yard was closed over the weekend and opens shortly so I am going over there to take some pictures. Mech said that it didn’t look like it was the original one. Watch this space.
     
  16. Razzle Dazzle

    Razzle Dazzle Ship shape and Bristol Fashion SILVER Sponsor

    46
    Jul 2, 2016
    United Kingdom and Florida
    Sea Ray Express Cruiser 340 1989 Mercruiser 7.4
    Mercruiser twin 7.4 Gas powered
    Found the paperwork and brochure it’s an Atwood mod 9357. Hope to talk to mechanic this pm.
     
  17. Razzle Dazzle

    Razzle Dazzle Ship shape and Bristol Fashion SILVER Sponsor

    46
    Jul 2, 2016
    United Kingdom and Florida
    Sea Ray Express Cruiser 340 1989 Mercruiser 7.4
    Mercruiser twin 7.4 Gas powered
    IMG_0141.jpg L IMG_0140.jpg IMG_0142.jpg IMG_0140.jpg Here are the pictures of my water heater and the genny
     

    Attached Files:

  18. bahamabreisus

    bahamabreisus Well-Known Member

    Oct 25, 2007
    Hampstead NC
    500 dancer, previous 420,390,300 dancers
    detriot 8v92
  19. northern

    northern Well-Known Member

    Jan 17, 2007
    West coast Vancouver to Alaska
    380 Aft Cabin 1989 GPS and Charts by Nobeltec
    Twin 454 strait shaft
    I was once told if you assume people know 10% of what you do you will never be disappointed in them.
    My original water heater has a steel outer case and was all rusted, took few hours to scrub the rust off the floor.
    Make sure you keep the fittings from the old heater. You may have to extend the fitting in the tank to provide easy access to the drain vale in the tank.
    You build it once and operate it forever so set it up the way that you can best access the drain valve and thermostat.
     
  20. Razzle Dazzle

    Razzle Dazzle Ship shape and Bristol Fashion SILVER Sponsor

    46
    Jul 2, 2016
    United Kingdom and Florida
    Sea Ray Express Cruiser 340 1989 Mercruiser 7.4
    Mercruiser twin 7.4 Gas powered

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