What’s not to like about Diesels!

Discussion in 'General Discussion' started by hack4alivin, Jul 21, 2010.

  1. hack4alivin

    hack4alivin Active Member TECHNICAL Contributor

    Apr 18, 2008
    Joppa, Maryland
    320 Dancer
    Twin 350 V Drives
    Well if I was not sold before last week I am now. Going to New York last week, one of the boats going with me was a 1998 Sea Ray DA400 powered by twin Cat Diesels. On the first part of the trip I followed him up the Chesapeake Bay and while he was just cruising along at 2200 RPM’s I was doing almost 4000 to keep up. Now we covered over 450 miles on the trip and I burned over 650 gallons of gas at $3.00 a gallon. Now I don’t know exactly what his totals were but I know he burned less than I did and was paying 2.74 a gallon. So now we have a boat 8 foot longer, 2 foot wider, god knows how much heavier, and running just as fast, in not faster than mine, and costing less at the same time! What's not to like??


    I am sold, I want one!
     
    Last edited: Jul 22, 2010
  2. Pietro

    Pietro Active Member

    Nov 1, 2009
    Rome, Italy
    1990 390 EC
    3208 375HP CAT
    ...and it's safer :wink:
     
  3. tobnpr

    tobnpr New Member

    Nov 12, 2006
    New Port Richey, Florida
    1988 300 DA
    tw 350's w/ Alphas
    Likely he burned about 400-450 to your 650.

    Now you understand...

    It's not always about the "payback" for the higher cost of diesels. It's also about being able to wave, as you pass the fuel dock.
     
  4. Bridog

    Bridog Well-Known Member GOLD Sponsor

    Oct 4, 2006
    Gulf Shores AL / Brick NJ
    2016 19SPX OB
    Mercury 150 4S OB
    Gas at 3.00 a gallon? You must have done some homework for your trip.
     
  5. Turtlesboat

    Turtlesboat Minister of Media TECHNICAL Contributor GOLD Sponsor

    Feb 4, 2007
    New York City
    1996 450DA, TNT, Caribe dink w/15hp OB.
    3126 427HP TD transmissions
    You also don't worry about putting hours on your engines. 500 hours and the engines are just breaking in.
     
  6. Bridog

    Bridog Well-Known Member GOLD Sponsor

    Oct 4, 2006
    Gulf Shores AL / Brick NJ
    2016 19SPX OB
    Mercury 150 4S OB
    How about nasty black smoke? That's about all I could come up with. ;)
     
  7. Turtlesboat

    Turtlesboat Minister of Media TECHNICAL Contributor GOLD Sponsor

    Feb 4, 2007
    New York City
    1996 450DA, TNT, Caribe dink w/15hp OB.
    3126 427HP TD transmissions
    keeps the greenhead flies away.
     
  8. osd9

    osd9 New Member

    Oct 3, 2006
    MidAtlantic
    2003 410DA
    Caterpillar 3126-TA w/ ZF 80-IV
    Good....mine are just broken in this season....I now have ~525 hours on my 2003 CATs...my 4th season and lovin'em more every year!!!

    I went from a gas 380DA to a Diesel 410DA. ~ 2 ft longer and a ~ 1 ft wider...heavier, more room and an extra head.....yet, I run about a knot or so faster with the 410DA and burn about 25% less fuel....fuel, by the way, that I pay 15% less for.
     
  9. Whitenights

    Whitenights New Member

    211
    Nov 2, 2006
    Lake Cumberland, Ky
    1990 350DA Sundancer SOLD
    330hp V-drives
    When my buddy pulls up in his 540 and someone comments on that smell, he just smiles and says it is the smell of money :) I have to agree.
     
  10. fc3

    fc3 Just another eclectic geek TECHNICAL Contributor

    Nov 12, 2006
    Northern NJ
    1999 Sea Ray 330DA
    Twin 7.4 MPI (310 propshaft HP) V-drives
    Twin Mercury Marine marinized 7.4L L-29 V8s
    Cast iron block w 4-bolt mains
    It costs more to buy a diesel powered boat than the same boat with gas engines. But then when you trade it in you get more for it and it'll depreciate less since, as pointed out above, several hundred hours on a diesel is a tiny percentage of it's useful life.

    Best regards,
    Frank

    P.S.
    Unless you buy a Rinker dinker stinker. Diesel Rinkers, Carvers (and other similar chea... uh value brands, do not depreciate less. The dealers of those brands tell me that buyers want the lowest priced boat for the size. They don't put any value on diesel power. I think, however, that they do look for important features, such as a built-in blender.
     
    Last edited: Jul 21, 2010
  11. Gofirstclass

    Gofirstclass Well-Known Member GOLD Sponsor

    Apr 20, 2010
    Tri Cities, WA
    1995 550 Sedan Bridge,
    2010 Boston Whaler 130 Super Sport,
    1981 Boston Whaler 130 Sport,
    CAT 3406C's, 580hp.
    I just made the switch from a 330 with 5.7's to a 550 with 580hp CAT 3406's. I'll let you know how much I enjoy them.

    Thus far, the only three times we've started 'em up (all on sea trials) there's only been some smoke for about the first minute. Then it's all gone. The exhaust is under water so there's no diesel smoke, no smell, they just run. Ya gotta love 59,000 pounds of boat moving at 30kts.
     
  12. Alex F

    Alex F Active Member SILVER Sponsor

    Nov 14, 2006
    East Coast
    2005 420DB with AB 11 DLX Tender, Raymarine Dual E120 MFD/Radar/XMWeather, ST7001 A/P, AIS, SeaLift
    T-Cummins 450Cs Straight-Drives, 9KW Onan Generator, 40HP Yamaha for tender.
    Bill,
    I've learned the same thing last year from our trip to AC. We had a great cruise among two 410DAs and others. They had used about 25%+ (comparing roughly .8gpm to 1.1gpm or so) less fuel than me. That part rang the bell. But, obviously there's a lot more to it than just fuel economy. So, just like you we have a future boat on the radar...but it'll be a while.

    I like that comment very much :thumbsup:
     
    Last edited: Jul 21, 2010
  13. hack4alivin

    hack4alivin Active Member TECHNICAL Contributor

    Apr 18, 2008
    Joppa, Maryland
    320 Dancer
    Twin 350 V Drives
    I did do my "homework", all the gas I bought was 3.09 or less, 2.89 home, 2.99 in Cape May and I paid 2.99 one time in Brielle and 3.09 another. When you are covering that much ground it does pay to do some planning.
     
  14. Whitenights

    Whitenights New Member

    211
    Nov 2, 2006
    Lake Cumberland, Ky
    1990 350DA Sundancer SOLD
    330hp V-drives
    Must be nice to have competitive fuel prices. We are on an inland lake and all the marinas are fixing the prices and gouging us terribly. We pay at least $1.00 more per gallon than road price, and to make it worse, they keep the road tax rebate so we can not apply for that.

    I did have the boat out a couple months ago for bottom paint and got to fill it up at around $2.75 and was very happy to pay >only< that.
     
  15. earthmover17

    earthmover17 New Member

    706
    Jan 3, 2008
    land o lakes florida
    560 sedan bridge
    cat 3196
    Luke come to the dark side.
    It's a pretty simple equation gas versus diesel. Why do they put diesel engines in trucks and heavy equipment that need to last a long time with minimal break downs. I have gotten 10,000 plus hours out of well maintained dozer engines.
    I think they should offer diesels for even the smaller boats. The benefits of diesel over gas are far outwiegh the extra cost.

    Jack
     
  16. jrirvine1

    jrirvine1 Member

    747
    Dec 3, 2006
    Chester, MD
    2005 420 da
    Cummins 480 CE's (Rocket Sled)
    They do and these are affectionately called blow boats or rag boats – either term is correct.
     
  17. Firerooster

    Firerooster New Member

    351
    Apr 6, 2010
    Arizona
    Totally customized 1996
    Sea Ray 240 overnighter
    Towed with 2002 Ford F250, 7.3L powerstroke
    7.4L EFI/bravo III 4 and 3 blade props
    It is in the farther out future for us. But when we finally get our "big" boat it will be diesel for sure! Diesel trucks have been my hobby for a long time. I have been making my own bio diesel for about 8 years now. I have over 130K miles on just one truck. All on 100% home brew bio diesel. I have another truck I bought used and an old diesel Mercedes I have roughly 60k between the two of them all on my home brew as well. Thus where I am going is I already love diesels, and plan to run our boat on bio diesel as well. It's better for the environment, cleaner, non toxic if spilled. And costs me 14 cents a gallon to produce it!
     
  18. fwebster

    fwebster Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    Oct 6, 2006
    Middle Tennessee ; Panama City Beach, FL
    1996 450DA
    3116 Caterpillars
    To give you the numbers to finish the calculation, the Caterpillars were burning a little less than 18 GPH at 2200 rpm................
     
  19. Whitenights

    Whitenights New Member

    211
    Nov 2, 2006
    Lake Cumberland, Ky
    1990 350DA Sundancer SOLD
    330hp V-drives
    My 454's each burn right at 17 GPH running 3300 rpm pushing my 16,000 lb boat about 22-23 mph.

    My friends 540 with twin Mann 700's ( I think, or maybe 800's) is a quick boat for the size, gets up way quicker than my little gas hog. And so smooth. If I get a larger boat it will have diesels.
     
    Last edited: Jul 22, 2010
  20. stephane

    stephane Member

    110
    Mar 25, 2009
    Canada, PQ
    310 Sundancer
    Twin Diesel 4.2 Mercruiser w/Bravo III
    I now know the real difference......keep the same boat but only upgrade engine I could tell on my boat the saving is a way more than 50%

    The most I could do before with a 200 gallon tank was 8 hour! now I could do over 22 and cruise a way faster, more silent, safer and mine don't smoke even when cold. Diesel are no brainer on a boat I don't even understand why like in Europe it is not standard on all boat
     

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