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  1. #11
    Join Date
    Oct 2006
    Location
    South Carolina
    Boat
    Sea Ray
    Details
    '99 240 Sundancer
    Engine(s)
    5.0 MPI
    Posts
    495
    Great points guys; thanks for tips.

    I had made up my mind last night to go with the 4.3 rebuild but after calling the place that has the 5.0 I am still going to make the 120 mile drive out to look at it this morning. I found out that it is not a carb but it's fuel injected and a full Vortec and has more hp than I thought it did so it might be worth a look. I have been assured that there is no swap issues between going carb to fuel injected and that it is still a "drop in" application.

    My preliminary thoughts were wrapped around the wallet and the best prices I found were:

    $5,995 for a 5.0MPI (includes a 100+ lb weight gain)
    $4,295 for a carbed 5.0 (includes a 100+ lb weight gain and only 15 more hp)
    $4,150 for a carbed 4.3
    $2,295 for a 4.3 longblock

    Then yesterday I found the other two options;
    $2,500 for a used fuel injected 5.0
    $1,500 for a local rebuild of my 4.3

    The local rebuild shop builds all types of engines but they do a lot of marine engines and all of the mechanics at the marine shop I talked to send all of their work and all of their personal boat engine builds to that shop; so I was assuming that it would know how to rebuild marine engines. I could be wrong though; they might just rebuild with auto cams/etc. The mechs I talked to yesterday had all built gofast boats and had that shop do the engine customization for them but I suppose that doesn't necessarily mean that shop builds for cruising longevity since as we all know building something to go fast doesn't have a thing to do with building something to cruise for years. If I choose the rebuild option I will have to make sure what they're going to do during the rebuild.

    I originally had written off the used 5.0 because it's a hundred pounds heavier and I thought only 15 hp more, but now I found out that it's a full Vortec, fuel injected, and has more power than that - and from what I'm told Mercruiser rates hp differently now than they did in '93 and the true hp difference would be even greater.

    I also have a strong suspicion that in a boat of this size, a fuel injected 5.0 will probably get better fuel economy than an overstressed 4bbl 4.3 that has all four of its barrels kicked in almost 100% of the time. If true, a 1/3 mpg improvement would pay for itself in fuel costs in a couple of summers.

    I've also just now thought of another angle - resale value. Sometime I'm going to want to sell this boat and how hard is it going to be to sell something this size when the potential buyer finds out it just has a "little" 4.3 in it? I would think the 5.0 would greatly add to its resale value more than the extra $1k it will cost me and make it a lot easier to sell quickly. But - it's used and in unknown condition.

    I'm leaving in a little while and will let you guys know whether I brought home a 5.0 or not in the next day or so.
    Gerald
    1999 240 Sundancer 5.0 MPI "SeaRenity"
    1993 230 Sundancer 4.3LX "Offroad Dancer" (sold)
    South Carolina

  2. #12
    Join Date
    Nov 2006
    Location
    Live in Western NC, boat in Charleston, SC
    Boat
    Sea Ray
    Details
    1997 290DA, Zodiac HP Floor dinghy with Honda 2 hp 4 stroke, 2005 16' Palm Beach with Yamaha 60hp
    Engine(s)
    Single 454 Mercruiser w/Bravo III--~1000 hours running like new
    Posts
    898
    Talk about bouncing back...Gerald, you are da man! Good luck today.

  3. #13
    Join Date
    Oct 2006
    Location
    Panama City Beach Fl/ South Ga
    Boat
    Sea Ray
    Details
    2004 - 220 Sundeck
    Engine(s)
    5.0L w/Bravo 3 Drive
    Posts
    1,991
    :cool:

    The 5.0 mpi would be a good option and is just about as bullet proof as it gets. That 305 motor has been a main stay in Chevy for 30 years. Hard to beat that one.
    2007 Yamaha FXHO Cruiser 2008 Yamaha FXHO
    http://www.condo.eworldz.com/

  4. #14
    Join Date
    Oct 2006
    Location
    Upstate South Carolina
    Boat
    Sea Ray
    Details
    2006 260DA
    Engine(s)
    350 MAG Bravo III
    Posts
    5,971
    Well if your going to get a V8 then at least make the thing fast...........here's something to get you thinking about mods.

    2006 260DA............Former Sea Rays..... 1999 210SD ...... 2002 240SD

  5. #15
    Join Date
    Oct 2006
    Location
    midwest
    Boat
    sea ray
    Details
    200 br
    Engine(s)
    5.0L MPI, Bravo 3
    Posts
    230
    Tough call. Is it possible to get the V-8 bench tested before installation to verify condition? With the 4.3 you'll always be thinking "I could have had a V-8."
    Widowmaker
    2003, 200BR, 5.0L, B3
    Springfield, IL
    ..."All men will be sailors then
    Until the sea shall free them".... L. Cohen

  6. #16
    Join Date
    Oct 2006
    Location
    Panama City Beach Fl/ South Ga
    Boat
    Sea Ray
    Details
    2004 - 220 Sundeck
    Engine(s)
    5.0L w/Bravo 3 Drive
    Posts
    1,991
    2007 Yamaha FXHO Cruiser 2008 Yamaha FXHO
    http://www.condo.eworldz.com/

  7. #17
    Join Date
    Oct 2006
    Location
    North GA Mountains
    Boat
    Sea Ray (Everything else is Just a Boat)
    Details
    Looking For Next One
    Engine(s)
    Looking For Next One
    Posts
    7,580
    Quote Originally Posted by Dave S
    Well if your going to get a V8 then at least make the thing fast...........here's something to get you thinking about mods.

    Think I can get that in MS Judy. Talk about a fast 240SD. Is that what you had in yours Dave

    Previous Boat:
    2006 240 SunDeck, MS Judy, 350 MAG BR3
    North GA Mountains http://www.ssg-i.com

  8. #18
    Join Date
    Oct 2006
    Location
    Midway, Ga
    Boat
    SeaRay
    Details
    04 SeaRay 185Sport, Smart Tabs, Mageln Meridian Gold GPS, Hbird Matrix 87 dept/ff/gps/cp, Uniden vhf
    Engine(s)
    4.3L 190HP, Alpha 1 1.81 ratio, 14 1/4X21 Turning Point Prop
    Posts
    1,984
    If you go with the 5.0L you will now have an ECM, make sure your gauges are compatible with electronics, they are sometimes picky what you connect to them, some analog instruments can kill an ECM. I take it that the ECM is part of the engine package, get an electrical schematic to be sure you connect the wiring in the proper places. It may be that you can just plug the existing wiring in and go I do not know, just check it out to be sure. Good luck, it sounds like a good move to me.
    http://myboat.wikispaces.com/


    2004 185 Sport, 4.3L 190 Hp, Alpha 1 1.81 ratio 1994 GMC K1500, 5.7

  9. #19
    Join Date
    Nov 2005
    Location
    Knox Vegas, TN - RSM, CA
    Boat
    Sea Ray
    Details
    36' aft cabin
    Engine(s)
    Twin Merc 350's
    Posts
    142
    If you do go the V8 route, I wouldn't fool with the 305, the 350 is dimensionally identical to the 305 and shouldn't be hard to find.
    No replacement for displacement
    "2 Can"

  10. #20
    Join Date
    Oct 2006
    Location
    Upstate South Carolina
    Boat
    Sea Ray
    Details
    2006 260DA
    Engine(s)
    350 MAG Bravo III
    Posts
    5,971
    Quote Originally Posted by midway
    If you go with the 5.0L you will now have an ECM, make sure your gauges are compatible with electronics, they are sometimes picky what you connect to them, some analog instruments can kill an ECM. I take it that the ECM is part of the engine package, get an electrical schematic to be sure you connect the wiring in the proper places. It may be that you can just plug the existing wiring in and go I do not know, just check it out to be sure. Good luck, it sounds like a good move to me.
    I agree with Nolan. If you get a later model ECM that interfaces to the instruments via a Smartcraft Gateway, you may be flat out of luck. Again Gerald................a call to the dealer about this would be in order.
    2006 260DA............Former Sea Rays..... 1999 210SD ...... 2002 240SD

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