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  1. J

    Duramax in powerboat

    But it looks good! What exaust manifolds did you use? Anyone knows if it's true that Ford windsor marine manifolds do fit?
  2. J

    Duramax in powerboat

    Very interesting and good mileage! Also sondering about the transmission.
  3. J

    Duramax in powerboat

    As i said Arneson asd8 can handle much more torque than what a duramax delivers.
  4. J

    Duramax in powerboat

    Now it's either to go with dmax or Iveco 8,1L diesels, i do want the dmax but i want to hear something from the guy with the 33ft who runs them, i have found a pair of arneson asd8 in Florida for 10k$ and that is a drive that can handle more than enough torque from a dmax, i ran them before in a...
  5. J

    Duramax in powerboat

    Here is the link http://www.duramaxforum.com/forum/introductions/20057-new-guy-crazy-idea-4.html
  6. J

    Duramax in powerboat

    Marine diesel Sweden do make a vgt500 and theyre building a twin supercharger engine, their engines are used by many people in bigger boats, even the military is using them in some boats. About manifolds.. I've read somewere that Ford windsor marine manifolds should fit the dmax, i know i have...
  7. J

    Duramax in powerboat

    Have you had any problems with the allison in boats or the dmax? Did you still use the allison trans in those bigger boats? No need to lower the compression ratio because it is a commonrail and has already got lower compression ratio right? I'm only looking to get 450hp out of them to get a...
  8. J

    Duramax in powerboat

    It works! PPE have done it. http://www.youtube.com/watch?v=Y4ugzTL2y1U There is also zf 2-speed trannies avilable for boats.
  9. J

    Duramax in powerboat

    is it possible to only use 3,4 and 5th gear on the allison trans? If i use 2 duramax and 2 allison trans will they shift gear at the same time or are all trannies different due to mileage and such?
  10. J

    Duramax in powerboat

    Either SSM 7 diesel 1:1 ratio or an arneson asd6 or 8 depending on hp and torque.
  11. J

    Duramax in powerboat

    Boats are pretty heavy, almost like towing a trailer up a big hill all the time, but still i can't see why cummins, powerstroke and cats with the same cui will last? Aluminum is often used in GM engines to in boat Racing, i've heard nothing bad about it exept that it does not like salt.
  12. J

    Duramax in powerboat

    This boat came from factory with 3x420hp 454ci GM engines, another engine choise back then was 2xCAT 3208ta 425hp, almost the same topspeed betwen engine choises due to the higher torque in diesels but the Cruise Speed is much higher with diesels than gas engines and it's the Cruise Speed i...
  13. J

    Duramax in powerboat

    Thanks for the answers! Why would a duramax eat pistons at high rpm when a cummins 5,9 480hp last a long time in durance races? Is duramax engines not good? A GM 454 will last 700hr of more in a boat. Yes i do own an old meteor, i think it's from 1989, new paint, new upholstery and much more...
  14. J

    Duramax in powerboat

    All marine engines are overpriced if you ask me and that is why i want to marinize two myself plus it is fun to do :) is there anywhere i can find the parts i need? any scrap yards?
  15. J

    Duramax in powerboat

    Yes, banks do build a marine duramax but still the price is to high for me, i could build two engines for much less than one marine engine cost.
  16. J

    Duramax in powerboat

    Hi. New on this great forum.. I'm looking to put two duramax engines with allison transmissions into my 50' wellcraft scarab boat, but what engines do you guys think i should use? could i use only 2,3 and 4th gear on the trans? where can i find a set of engines and trans complete with harnesses...
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