User Tag List

Page 1 of 2 1 2 LastLast
Results 1 to 15 of 21
  1. #1
    Join Date
    Jan 2004
    Location
    Florida
    Posts
    37,827
    Thanks (Given)
    64
    Thanks (Received)
    1667
    Likes (Given)
    337
    Likes (Received)
    19201
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)

    Lightbulb New Mercury Racing Diesel OptiMax Outboard

    New, from Race Division... The 3.0 Litre Mercury Racing OptiMax V-6 Diesel outboard, rated at 175 horsepower, at the propshaft. This will eventually replace the existing 3.0 Litre Optimax JP model, that has been available & in use since the 90's. The Optimax JP currently burns JP5, JP8 or Kerosene Jet A fuel(s), which has a 40% fuel burn reduction over standard Ethanol gasoline, utilizing about 95% of the standard 3.0 Litre OptiMax engines existing build components. This new Diesel variants market, will open a whole new realm of performance possibilities for the avid fisherman. In the past, Mercury's largest sales sector with these engines, has been mostly U.S. & overseas governments.

  2. #2
    Join Date
    Feb 2007
    Location
    Sydney, Australia
    Posts
    192
    Thanks (Given)
    1
    Thanks (Received)
    10
    Likes (Given)
    0
    Likes (Received)
    19
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I wonder how many components will be used from the standard 3.0... My guess would be, not many powerhead components will be used...

  3. #3
    Join Date
    Sep 2010
    Location
    Townsville, Australia
    Posts
    145
    Thanks (Given)
    0
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It says 95% of standard optimax components are retained. Im assuming the compression would have to be quite low for a diesel to use existing bottom end parts like crank, rods etc. Probably why it needs the assistance of spark plug and glow plug?

  4. #4
    Join Date
    Oct 2011
    Location
    ft pierce fl
    Posts
    1,583
    Thanks (Given)
    30
    Thanks (Received)
    41
    Likes (Given)
    622
    Likes (Received)
    340
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    there were several up for auction a few months ago on government liquidators site. all were new 2007 models in the crate. I thought it was bs. but there is a lot of info about them when you google government diesel mercury outboards.

  5. #5
    Join Date
    Apr 2003
    Location
    New Smyrna Beach, FL./LOTO
    Posts
    6,606
    Thanks (Given)
    600
    Thanks (Received)
    900
    Likes (Given)
    1679
    Likes (Received)
    7082
    Mentioned
    3 Post(s)
    Tagged
    1 Thread(s)
    Scott Porta bought one for his 23 Seacraft. He hasn't run it yet but I will put a post up with the results.

    Joe

  6. #6
    Join Date
    Jan 2007
    Location
    lindenhurst
    Posts
    1,831
    Thanks (Given)
    1
    Thanks (Received)
    11
    Likes (Given)
    1
    Likes (Received)
    43
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Compression is probably not much higher then normal, it is spark ignited combistion

  7. Thanks jim17 thanked for this post
  8. #7
    Join Date
    May 2015
    Location
    Lost
    Posts
    2
    Thanks (Given)
    0
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I am extremely interested, I had been trying to get a jp version, that seemed next to impossible.

  9. #8
    Join Date
    Jun 2007
    Location
    Singapore/Melbourne/Italy
    Posts
    9,097
    Thanks (Given)
    1008
    Thanks (Received)
    354
    Likes (Given)
    4297
    Likes (Received)
    1951
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    What kind of press release talks about an engine but then says sorry you cant buy one?
    I'll bet you cant have one because it doesnt meet emission regs?
    Saying that South America and Asia dont yet have any rules
    Last edited by powerabout; 05-21-2015 at 06:59 PM.

  10. #9
    Join Date
    Oct 2004
    Location
    California
    Posts
    3,607
    Thanks (Given)
    1633
    Thanks (Received)
    413
    Likes (Given)
    15099
    Likes (Received)
    3916
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    "Oh Boy" now our rivers and lakes can smell like our cities and truck stops ................ Yay!
    Wriggleys gum makes me think of boating, "Double your engines, Double your fun"



  11. #10
    Join Date
    Oct 2001
    Location
    #2 iron from the Mayo clinic, Fla. / Blue Ridge, VA.
    Posts
    8,236
    Thanks (Given)
    373
    Thanks (Received)
    155
    Likes (Given)
    484
    Likes (Received)
    1135
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    whiners, just stop. compression, has to be higher, just a diesel thing. torque vs gas model of same displacement, should be much higher. a good reference is Mr Scott Porta. I will be waiting to review his findings. fun out
    most overnite successes usually take at least 10 years


    Certified turd polisher,

  12. #11
    Join Date
    Feb 2007
    Location
    lily lake WI
    Posts
    3,205
    Thanks (Given)
    8
    Thanks (Received)
    57
    Likes (Given)
    1560
    Likes (Received)
    342
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by NICE PAIR View Post
    "Oh Boy" now our rivers and lakes can smell like our cities and truck stops ................ Yay!
    If you make fuel out of deep fryer you could be boating and getting hungry for McDonald lol

    I got to see a jp opti it should have a ton of low end torque

  13. #12
    Join Date
    Jan 2004
    Location
    Florida
    Posts
    37,827
    Thanks (Given)
    64
    Thanks (Received)
    1667
    Likes (Given)
    337
    Likes (Received)
    19201
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Revolution141 View Post
    It says 95% of standard optimax components are retained. Im assuming the compression would have to be quite low for a diesel to use existing bottom end parts like crank, rods etc. Probably why it needs the assistance of spark plug and glow plug?
    Well...All the "original" Orbital Engine/Optimax license technology was dual plugged anyway, controlled by the Mercury triple nickle processor. All this Opti 3.0 litre JP motor stuff is really old news, actually. When Mercury first introduced its first "production" 3 litre 225, back in 1994, the JP variant was already in the works & going through endurance at the Lake. By the time they introduced the "production" 3 litre 250, the next year, the JP motors were already being produced. You would'nt believe the level of low quality fuels that these engines were tested on, and still produced respectable numbers. Don Schweb and I promise to never say a word about them, lol.

  14. #13
    Join Date
    Sep 2007
    Location
    Cocoa FL
    Posts
    55
    Thanks (Given)
    0
    Thanks (Received)
    1
    Likes (Given)
    0
    Likes (Received)
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    A "display" Mercury 175hp Diesel was shown at SOFIC. It had a full cowl with shiny paint and pretty graphics with no mechanical diesel parts in view. This performance datasheet was published without a reproduction disclaimer and is available on the Mercury racing website http://www.mercuryracing.com/optimax...ting-for-duty/ which also states it is not EPA certified and therefore not available to civilians. Spark ignition heavy fuel engines are dirty by today's exhaust emissions standards and packaging a DPF in an outboard would be near impossible with the water proximity. I am sure Mercury now owns this market with sound engineering.
    Click image for larger version. 

Name:	Mercury_Diesel_175hp_SOFIC-2015_3c.jpg 
Views:	36 
Size:	249.4 KB 
ID:	320216
    Last edited by Jerryrigged; 05-22-2015 at 10:52 PM.

  15. #14
    Join Date
    Jun 2007
    Location
    Singapore/Melbourne/Italy
    Posts
    9,097
    Thanks (Given)
    1008
    Thanks (Received)
    354
    Likes (Given)
    4297
    Likes (Received)
    1951
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    The brp army engine can run diesel but from what guys tell me its only for emergency.
    I guess a dedicated engine could do much better?
    We are all still waiting a proper production diesel outboard.

  16. #15
    Join Date
    Apr 2001
    Location
    Florida/New York
    Posts
    21,817
    Thanks (Given)
    965
    Thanks (Received)
    1561
    Likes (Given)
    2932
    Likes (Received)
    5518
    Mentioned
    2 Post(s)
    Tagged
    3 Thread(s)


    Facebook | YouTube | Vintage Outboard Catalogs
    Photo prints available of your boat - click here


Page 1 of 2 1 2 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •