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  1. #1

    2 stroke Fuel injection

    Ok guys, I need some help. I am looking to find some aftermarket fuel injection to put onto my omc v8's. I want to build the system , just need to find an ecu system that will work with a 2 stroke. I want to try and make it sequential fire , use 8 msd coils, a single throttle body with a custom plenum up front, plumb in the injectors behind the reeds, one for each cylinder. I know it will all work, just need to find a programable ecu that will fire a 2 stroke.I want to take the factory charging system off and set up an alternator that will run off of the power steering pulley on the flywheel. Any help would be appreciated.

    Tim
    Drive It Like You Stole It!!

  2. #2
    Join Date
    Apr 2001
    Location
    Austin Tx
    Posts
    1,366
    Several I know use MOTEC, either M48 (will do 4,6,8), M600 for a 6, M800 for an 8 and CDI8 for spark.

    Not cheap but fully programable for each individual cylinder for fuel and spark throught the rev range.

  3. #3
    http://www.efitechnology.com/
    http://www.efitechnology.com/documen...0Rev%201_1.pdf
    but hitting a price tag close to 10.000 dollars is probably not something you want to hear
    http://www.dtafast.co.uk/S_80_PRO.htm
    dta S80 is close to a 1200 euro ?dollars
    but you would have to run induction ignition ( optimax coils or bosch coils)
    and high impandance injectors or ballast resistors on low impandance injectors

  4. #4
    I can't recommend it because I have never tried it but... http://www.megasquirt.info/index.htm

    For sure the ultimate DIY FI


    98 Laveycraft Sebring 20.2 Tunnel 280 "catchin" motor. 90s? It's enough for me!

  5. #5
    Quote Originally Posted by luv2gofast View Post
    I can't recommend it because I have never tried it but... http://www.megasquirt.info/index.htm

    For sure the ultimate DIY FI
    you would have to go to http://www.ms3efi.com/
    as MS2 will only do 6 ignition outputs
    there is a stable code for the MS3 but i don,t think it will support 8 cylinder two stroke (16 cylinder fourstroke )
    at this time
    they are developing Alpha codes
    http://www.msextra.com/forums/viewto...?f=125&t=38967
    which should give support
    if your engine is still in one piece i would first install a data gathering system
    to have a reference when you start with the system
    http://www.aim-sportline.com/pages/b..._bike_evo3.htm
    http://www.innovatemotorsports.com/products/dl_32.php

    you should be able te get something like this

  6. #6
    Join Date
    Jun 2004
    Location
    port st. lucie, fl
    Posts
    4,651
    i run wolf efi on my 3 litre and am very happy w/ it, my fuel mileage also went from 2.5 mpg to 3.2 plus, you can pm me for more info, as we also sell them, they have 8 inj drivers as well as 8 ign drivers so you can run it fully sequential on a 2 stroke
    action mobile marine, 772 528 0754, dealers for aces fuel products,wolf efi, pro marine,latham and gaffrig/livorsi. we build gearcases and modify them(3 litre) to ratchet, and powerheads as well. 21 skater/3 litre wolf efi the engine build http://www.screamandfly.com/showthre...-3-litre-build

  7. #7
    Join Date
    Nov 2005
    Location
    Windsor, Ontario
    Posts
    163
    Contact Dave Bush. http://www.davebushracing.com/index.html
    He built a 450 hp 3.3 liter OMC V6 that runs on pump gas using a Vipec ECU. http://www.youtube.com/watch?v=hxl2ldHybHE
    1972 Checkmate MX-15, Merc inline 1500xs
    2010 Tuff 16, 15" Merc 2.5 (150XR6, 200, Drag, S3000 powerheads)
    http://www.youtube.com/watch?v=hOh-YewzPc0

  8. #8

  9. #9
    Join Date
    Sep 2002
    Location
    Atascadero,Calif
    Posts
    1,211
    Quote Originally Posted by mdc View Post
    Contact Dave Bush. http://www.davebushracing.com/index.html
    He built a 450 hp 3.3 liter OMC V6 that runs on pump gas using a Vipec ECU. http://www.youtube.com/watch?v=hxl2ldHybHE
    I'll second this since I own that engine.
    Gary

    I don't know enough, to leave well enough alone.

  10. #10
    Quote Originally Posted by gfinch View Post
    I'll second this since I own that engine.
    Atascadero? You must frequent Nacimento Lake. I will be sure no to pick a race with you if I see you there.


    98 Laveycraft Sebring 20.2 Tunnel 280 "catchin" motor. 90s? It's enough for me!

  11. #11
    Join Date
    Jun 2010
    Location
    Rotorua New Zealand
    Posts
    983
    I believe Tony Brucato is getting a fuel injection system up and running for the OMC V8 fraternity?????? Hows it coming Tony????
    Last edited by Smoking Joe; 06-04-2011 at 03:10 AM.

  12. #12
    Join Date
    Sep 2002
    Location
    Atascadero,Calif
    Posts
    1,211
    Quote Originally Posted by luv2gofast View Post
    Atascadero? You must frequent Nacimento Lake. I will be sure no to pick a race with you if I see you there.
    I go to Naci sometimes, San Antonio most of the time. Go ahead and pick, "It's just a stupid little fishing boat!"



    To all, note who is the sponser of the Low Emission Outboard Engines fourm.
    Last edited by gfinch; 06-04-2011 at 04:32 PM. Reason: more info.
    Gary

    I don't know enough, to leave well enough alone.

  13. #13

    BigStuff3

    Contact BigStuff3, I did on a project that i'm doing and its won't cost over 5k. I prefer moran billet atomizers injectors.(GM style) I contacted Moran Motorsports on that too, he only need the duty cycle and he can program them to what ever you want and any size(150 lbs an hr to 250 lbs an hr). The intake and throttle body is up to you. Be creative and post pictures as you go along.
    Gasoline is for washing parts, Alcohol is for drinking, and Nitromethane is for RACING

  14. #14
    Thanks for all the feedback, keep the ideas coming. I think the BS3 is for the race car stuff, I need this to convert a 2 stroke V8 outboard. I am thinking about giving the MS3( megasquirt) . It looks promising and fairly cheap to try.

    Tim
    Drive It Like You Stole It!!

  15. #15
    Join Date
    Apr 2001
    Location
    Austin Tx
    Posts
    1,366
    Good luck with the Megasquirt stuff, you will be breaking new ground.

    I mentioned MOTEC because it is proven in many outboard apps, I know of 3 different V8 OMC's and many V6's that use it with excellent results. Keep us posted.

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