Late 90's 270 Sundancer Thread

Discussion in 'Sport Cruisers' started by nigel, Mar 7, 2007.

  1. nigel

    nigel New Member

    68
    Jan 24, 2007
    South Coast, UK
    1998 270 Sundancer
    Twin 4.3Ls on Alpha 1s
    Everyone else has one - so how about a thread of our own for those with the "wider beam" 270 'Dancer?

    Here's my first topic: Does everyone else's boat have a sealing strip at the -back- of the engine hatch? Mine didn't, with a strip only at the front and sides. Dunno if it should have been there and came off before I bought it or not...

    Anyway - I've worked out its been the cause of ignition coil failures that, until I sussed it out, were a bit of a mystery. The coils are directly below the back of the hatch and heavy spray was (I reckon) running into the engine bay. Needless to say, I've put a sealing strip on there now and not had any probs so far...

    Other than that little problem the boat's great!

    Anyone got any tips or tricks or cool mods to post up? - Electro-lowering swim platforms, twin mercruiser racing engines?? Anyone else on the South Coast of England out there??
     
  2. gmcleer

    gmcleer New Member

    23
    Nov 1, 2006
    New York
    Hello fellow 270 owner(s),

    I've had a 270 for a few month now and think it would be great if we could put our heads together. I'm in LI New York on the south shore. I am presently replacing the mainifolds, risers and elbows. Any advice on antifouling paint for a Bravo III? My boat has a 7.4 l 310 hp with a bravo III. I am also considering putting in AC. A generator would also be nice :)

    Gordon
     
  3. boatrboy

    boatrboy Active Member

    Oct 3, 2006
    Orange, CT
    1999 270 Da
    7.4 MPI w/B3
    The 270 Sundancer is a great boat don't you think? Of course I am prejudice :grin: I have added a Navman 3100 fuel computer, Garmin 2006c Chart plotter and a custom flushing system I designed (with help from other forum members) and installed. I have also installed Weaver davits for a dinghy. I have all options except for A/C and Genny.

    I have owned this boat for 3 years now and put about 100 hrs/year.

    There are a few of us here so ask away and everyone will try to help :smt024

    GMcleer- I use Interlux Trilux outdrive paint over primer (I think its Primocon). I sand the drive well and use small paint rollers for applying the primer. Clean and paint the area behind the props (around the seals) as this area corrodes first if the zincs are not up to par. I spray the Trilux in multiple coats (usually 2-3) This stuff is expensive so spray accurately. I use 1 1/2 cans yearly with good results in salt water.


    Mark

    PS - You guys should add the details of your vessel in your signature so everyone can see what you have. This will speed up responses.
     
  4. SeaHarley

    SeaHarley New Member

    370
    Oct 12, 2006
    CYC, Middle River, Baltimore, MD
    1998, 3870 Cruisers Yacht
    SOLD: 1999, 310DA Sea Ray
    7.4, 454 MPI Horizons, in 3870 Cruisers
    (310DA Sea Ray was 5.7, 350 MPI Mag)
    Role Call:

    I'm here.......... :grin:
     
  5. nigel

    nigel New Member

    68
    Jan 24, 2007
    South Coast, UK
    1998 270 Sundancer
    Twin 4.3Ls on Alpha 1s
    Rain in

    Anyone else get rain water in the bilge? - Worked out where its coming from?
     
  6. boatrboy

    boatrboy Active Member

    Oct 3, 2006
    Orange, CT
    1999 270 Da
    7.4 MPI w/B3
    Re: Rain in

    Yes - actually both salt and rain water. Here is what I found. I saw water in the battery tray and noticed the battery cables were wet. I sprayed water from a hose down the gunnel's from the bow on the port side and found that water was leaking down the gas fill. The sealant was loose and water followed the gas line thru the hull over the batteries and dripped off at the low point of the hose. The salt water must have entered there as well because it only seamed to get wet when seas were rough (splashing down the gunnel's). I decided to re-seal the pump out fitting on the starboard side just in case.

    Now I will say that occasionally I find a mystery ounce in the bilge :smt017 but sealing the fittings basically solved the leaks.

    I hope this helps.

    Mark
     
  7. dakst54

    dakst54 New Member

    10
    Mar 19, 2007
    1998 270

    I just purchased a 1998 270 Dancer and so far, I love it. What would be everyone's best advice to give a new owner of this boat and what are the main maintenance issues to keep an eye on (other than Bravo III corrosion, obviously).

    Thanks and I appreciate all of your expert advice!!

    Dave
     
  8. gmcleer

    gmcleer New Member

    23
    Nov 1, 2006
    New York
    Hello all,

    I had a mechanic replace the mainfolds, risers, elbows, circulating pump and the impeller in the sea water pump. I am going to pull the props this weekend and prime and paint the outdrive. I also picked up a new attwood water heater. It seems the water heaters go in alot of these boats. I picked up a repair kit for the winless. The stud on the guide snapped off. The kit has a stud that threads into the winless (sp.) but, the original stud looks like it was pressed into the winless. Its a Lafran. Any thoughts?

    Gmcleer
    LI NY
     
  9. boatrboy

    boatrboy Active Member

    Oct 3, 2006
    Orange, CT
    1999 270 Da
    7.4 MPI w/B3
    DAkst54 - Nothing that I know really stands out as problematic with this model in my experience (3 yrs). I would do the regular maintenance religiously. Are you doing the work yourself?

    GM - I have not had to replace mine yet but do a search as I think this was talked about before. I think the stud is threaded and you might need to drill a hole in it and use an EZOUT. If no info here I would call the company and I'll bet they would be happy to help.

    Good luck and let us know what you find out.

    Mark
     
  10. SeaHarley

    SeaHarley New Member

    370
    Oct 12, 2006
    CYC, Middle River, Baltimore, MD
    1998, 3870 Cruisers Yacht
    SOLD: 1999, 310DA Sea Ray
    7.4, 454 MPI Horizons, in 3870 Cruisers
    (310DA Sea Ray was 5.7, 350 MPI Mag)
    I also had a mechanic look at the riser situation. The risers were fine but the 6" extensions had corrosion between the walls at the gasket joint. I maybe had about another year before it would have done damage. My boat is a 2001, so that is about 5 - 6 years. So the 5 years inspection schedule is right on. I did put a raw water flush system on but this was after the previous owner had done nothing. :smt021

    I also did the raw water pump. After 2 1/2 years, that was shot as well. Impellers were stiff and tore, but all the pieces were there. Another shishhhhh..... close call. :smt014

    A couple of other items to a tune of $1,600 and I'm back again. Ready to spend more money on gas.......... :smt013

    Wax - On, Wax - Off.......

    Don't ya just love it? :grin:
     
  11. capz

    capz New Member

    336
    Mar 11, 2007
    Quincy, MA
    Sea Ray 270DA, Garmin 545s
    Merc 7.4L Bravo III
    I'm pondering a chartplotter upgrade. I currently have the b&w Raychart 420. I'd love to get a new Garmin with all the pretty colors. I know the 545s will fit nicely but if space permits I may go with the 4208. I haven't taken measurements yet. Probably no space for a flush mount though. Anyone successfully install a large screen plotter on the dash. I believe the 4208 is 11'' wide. If you have pics show em off.
     
  12. boatrboy

    boatrboy Active Member

    Oct 3, 2006
    Orange, CT
    1999 270 Da
    7.4 MPI w/B3
    I have the Garmin 2006c which is only a 6 inch screen. I mounted it over the dash with some urethane spacers to contour my dash and mount to the existing bracket that came with the unit.

    While this is not flush mount nor 10 inch, it may give you some ideas.

    Mark
     

    Attached Files:

  13. capz

    capz New Member

    336
    Mar 11, 2007
    Quincy, MA
    Sea Ray 270DA, Garmin 545s
    Merc 7.4L Bravo III
    11'' is the whole unit length. The screen for the 4208 is 8''. It looks like your total unit length has to be at least 10''. Should fit fine. Great just what I needed, another reason to spend more $$$. Thanks a lot! :wink:
    Thanks for the info boatrboy. I might nag you again concerning the spacers. I assume these are needed for the curvature of the dash? Stay tuned.
     
  14. dakst54

    dakst54 New Member

    10
    Mar 19, 2007
    oil change

    So, I assume I should adjust the intervals in the manual, now that the boat is getting up to double digits in age. How often in hours and/or weeks would you recommend changing the engine oil?

    Thanks!
     
  15. boatrboy

    boatrboy Active Member

    Oct 3, 2006
    Orange, CT
    1999 270 Da
    7.4 MPI w/B3
    Re: oil change

    I go 50 hours so usually I change it once in the water (if I haven't pulled the boat), and during winterizing. Last year booked 100 hours. I usually pull the boat during the summer for one reason or another, so those occasions I change the outdrive fluid as well (around every 50 hours also).
     
  16. capz

    capz New Member

    336
    Mar 11, 2007
    Quincy, MA
    Sea Ray 270DA, Garmin 545s
    Merc 7.4L Bravo III
    Anyone have performance data for the 7.4L MPI? Last season I remember cruising at 28mph at 3200rpm. Now I'm at 24 at that rpm. The boat just feels sluggish.
     
  17. SeaHarley

    SeaHarley New Member

    370
    Oct 12, 2006
    CYC, Middle River, Baltimore, MD
    1998, 3870 Cruisers Yacht
    SOLD: 1999, 310DA Sea Ray
    7.4, 454 MPI Horizons, in 3870 Cruisers
    (310DA Sea Ray was 5.7, 350 MPI Mag)
    The curve I generated for my old 2001 270DA boat agrees with your 24 - 25 MPH at 3,200 RPM. However, I found my sweet spot to be a little more higher in the RPM's.
    I had bottom paint. Is your hull clean?

    3,400 RPM = 28 MPH
    3,500 RPM = 29.5 MPH, and about 1.8 MPG
    3,600 RPM = 31 MPH

    Lee
     
  18. boatrboy

    boatrboy Active Member

    Oct 3, 2006
    Orange, CT
    1999 270 Da
    7.4 MPI w/B3
    I just came in from a ride and noticed one way my performance was a lot worse than my return home. I was solo with a full tank, little water, empty holding tank. I do not have a/c or genny. I had a 2-3 ft chop today but tide was coming in when I was out there.

    Here is approx what I noticed:

    3,400 RPM = 26 MPH
    3,500 RPM = 28 MPH, and about 1.8 MPG
    3,600 RPM = 30 MPH

    Not too different from Lee, but I am a little slower. I have 22p props and continue to wish I had 24p for the slightly higher cruising speed. I seldom have more than 4-5 people on board. I just don't want to spend the money for a marginal improvement. Anyway, I am happy with this performance.

    I will check again when the water is calmer too. Hope this helps,

    Mark
     
  19. capz

    capz New Member

    336
    Mar 11, 2007
    Quincy, MA
    Sea Ray 270DA, Garmin 545s
    Merc 7.4L Bravo III
    As for the hull, I did not do a full bottom paint, just touched up a few spots. I haven't pulled the boat but felt around the hull a bit and found no growth. Not even slick. I did brush off a little growth from the trim tabs. Drive looks clean. The only other difference from last season's boating is I'm keeping the water tank full (been using the galley and shower more). I know I'll get a scolding for this but I DID NOT change the plugs.
    I'll watch rpms close this weekend to get better numbers. I have a sneaking suspicion they'll be close to yours and if so it's all in my head. If not I'll do a spark test.
     
  20. nigel

    nigel New Member

    68
    Jan 24, 2007
    South Coast, UK
    1998 270 Sundancer
    Twin 4.3Ls on Alpha 1s
    Four blade props

    Has anyone out there tried upgrading to four blade props on the 270? - I want to improve acceleration/hole shot and, if at all possible, cruise fuel consumption (and certainly not make the MPG worse!). I'm happy to compromise top speed to do this..

    My twin 4.3s are presently running 21" vengeance props - so was thinking 19" (or maybe 21") revolution 4s... Anyone familiar with these?

    Cheers,


    Nigel.
     

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